Unveiling Secrets of Overcoming the “Heteroatom Problem” in Palladium-Catalyzed Aerobic C–H Functionalization of Heterocycles: A DFT Mechanistic StudyClick to copy article linkArticle link copied!
Abstract
Directed C–H functionalization of heterocycles through an exocyclic directing group (DG) is challenging due to the interference of the endocyclic heteroatom(s). Recently, the “heteroatom problem” was circumvented with the development of the protection-free Pd-catalyzed aerobic C–H functionalization of heterocycles guided by an exocyclic CONHOMe DG. We herein provide DFT mechanistic insights to facilitate the expansion of the strategy. The transformation proceeds as follows. First, the Pd2(dba)3 precursor interacts with t-BuNC (L, one of the substrates) and O2 to form the L2Pd(II)-η2-O2 peroxopalladium(II) species that can selectively oxidize N-methoxy amide (e.g., PyCONHOMe) substrate, giving an active L2Pd(II)X2 (X = PyCONOMe) species and releasing H2O2. After t-BuNC ligand migratory insertion followed by a 1,3-acyl migration and association with another t-BuNC, L2Pd(II)X2 converts to a more stable C-amidinyl L2Pd(II)XX′ (X′ = PyCON(t-Bu)C═NOMe) species. Finally, L2Pd(II)XX′ undergoes C–H activation and C–C reductive elimination, affording the product. The C–H activation is the rate-determining step. The success of the strategy has three origins: (i) the N-methoxy amide DG can be easily oxidized in situ to generate the active L2Pd(II)X2 species via the oxidase pathway, thus preventing the destructive oxygenase pathway leading to stable t-BuNCO or the O-bridged dimeric Pd(II) species. The methoxy group in this amide DG greatly facilitates the oxidase pathway, and the tautomerization of N-methoxy amide to its imidic acid tautomer makes the oxidation of the substrate even easier. (ii) The X group in L2Pd(II)X2 can serve as an internal base to promote the C–H activation via CMD (concerted metalation-deprotonation) mechanism. (iii) The strong coordination ability of t-BuNC substrate/ligand suppresses the conventional cyclopalladation pathway enabled by the coordination of an endocyclic heteroatom to the Pd-center.
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(12)
, 6857-6873. https://doi.org/10.1021/acscatal.2c01516
- Junxia Yang, Yan Zhang, Ruyu Zhu, Ying Xue. Insight into the Mechanism and Regioselectivity of Pd(OAc)2-Catalyzed C–O Bond Activation via a β-O Elimination Approach: A Computational Study. The Journal of Physical Chemistry A 2021, 125
(42)
, 9267-9278. https://doi.org/10.1021/acs.jpca.1c05412
- Bin-Bin Zhu, Wen-Bo Ye, Zhi-Tao He, Shu-Sheng Zhang, Chen-Guo Feng, Guo-Qiang Lin. Regioselective Tandem C–H Alkylation/Coupling Reaction of ortho-Iodophenylethylenes via C,C-Pallada(II)cycles. ACS Catalysis 2021, 11
(19)
, 12123-12132. https://doi.org/10.1021/acscatal.1c03386
- Riqing Li, Hui Xu, Ning Zhao, Xiaojiao Jin, Yanfeng Dang. Origins of Chemoselectivity in the Ni-Catalyzed Biaryl and Pd-Catalyzed Acyl Suzuki–Miyaura Cross-Coupling of N-Acetyl-Amides. The Journal of Organic Chemistry 2020, 85
(2)
, 833-840. https://doi.org/10.1021/acs.joc.9b02826
- Yang-Yang Xing, Jian-Biao Liu, Qing-Min Sun, Chuan-Zhi Sun, Fang Huang, De-Zhan Chen. A Computational Mechanistic Study of Pd(II)-Catalyzed Enantioselective C(sp3)–H Borylation: Roles of APAO Ligands. The Journal of Organic Chemistry 2019, 84
(17)
, 10690-10700. https://doi.org/10.1021/acs.joc.9b01227
- Wenhui Feng, Tianyang Wang, Dongzhi Liu, Xiaotai Wang, Yanfeng Dang. Mechanism of the Palladium-Catalyzed C(sp3)–H Arylation of Aliphatic Amines: Unraveling the Crucial Role of Silver(I) Additives. ACS Catalysis 2019, 9
(8)
, 6672-6680. https://doi.org/10.1021/acscatal.9b01412
- Humair
M. Omer, Peng Liu. Computational Study of the Ni-Catalyzed C–H Oxidative Cycloaddition of Aromatic Amides with Alkynes. ACS Omega 2019, 4
(3)
, 5209-5220. https://doi.org/10.1021/acsomega.9b00030
- Yan He, Yingchun Wang, Xinping Liang, Bin Huang, Hengshan Wang, Ying-Ming Pan. Palladium-Catalyzed Three-Component Reaction: A Novel Method for the Synthesis of N-Acyl Propiolamides. Organic Letters 2018, 20
(22)
, 7117-7120. https://doi.org/10.1021/acs.orglett.8b03068
- Pin Xiao, Chun-Xiang Li, Wei-Hai Fang, Ganglong Cui, Walter Thiel. Mechanism of the Visible-Light-Mediated Copper-Catalyzed Coupling Reaction of Phenols and Alkynes. Journal of the American Chemical Society 2018, 140
(44)
, 15099-15113. https://doi.org/10.1021/jacs.8b10387
- Wenjing Liu, Jia Zheng, Zheyuan Liu, Wenping Hu, Xiaotai Wang, Yanfeng Dang. How Does Palladium–Amino Acid Cooperative Catalysis Enable Regio- and Stereoselective C(sp3)–H Functionalization in Aldehydes and Ketones? A DFT Mechanistic Study. ACS Catalysis 2018, 8
(8)
, 7698-7709. https://doi.org/10.1021/acscatal.8b02281
- Heng Li, Wen-Juan Hao, Mian Wang, Xue Qin, Shu-Jiang Tu, Peng Zhou, Guigen Li, Jianyi Wang, Bo Jiang. Catalytic Double [2 + 2] Cycloaddition Relay Enabled C–C Triple Bond Cleavage of Yne–Allenones. Organic Letters 2018, 20
(14)
, 4362-4366. https://doi.org/10.1021/acs.orglett.8b01841
- Wei-Hao Chen, Xuejiao J. Gao, Xingfa Gao. Methanol-Assisted Phthalimide Ring Opening: Concerted or Stepwise Mechanism?. The Journal of Physical Chemistry A 2018, 122
(12)
, 3115-3119. https://doi.org/10.1021/acs.jpca.7b11347
- Qian Peng, Zengwei Wang, Snežana
D. Zarić, Edward N. Brothers, Michael B. Hall. Unraveling the Role of a Flexible Tetradentate Ligand in the Aerobic Oxidative Carbon–Carbon Bond Formation with Palladium Complexes: A Computational Mechanistic Study. Journal of the American Chemical Society 2018, 140
(11)
, 3929-3939. https://doi.org/10.1021/jacs.7b11701
- Qiong Wang, Fang Huang, Langhuan Jiang, Chuanxue Zhang, Chuanzhi Sun, Jianbiao Liu, Dezhan Chen. Comprehensive Mechanistic Insight into Cooperative Lewis Acid/Cp*CoIII-Catalyzed C–H/N–H Activation for the Synthesis of Isoquinolin-3-ones. Inorganic Chemistry 2018, 57
(5)
, 2804-2814. https://doi.org/10.1021/acs.inorgchem.7b03216
- Lingjun Liu, Guojing Pei, Peng Liu, Baoping Ling, Yuxia Liu, and Siwei Bi . Mechanistic Unveiling of C═C Double-Bond Rotation and Origins of Regioselectivity and Product E/Z Selectivity of Pd-Catalyzed Olefinic C–H Functionalization of (E)-N-Methoxy Cinnamamide. The Journal of Organic Chemistry 2018, 83
(4)
, 2067-2076. https://doi.org/10.1021/acs.joc.7b03007
- Ignacio Funes-Ardoiz and Feliu Maseras . Oxidative Coupling Mechanisms: Current State of Understanding. ACS Catalysis 2018, 8
(2)
, 1161-1172. https://doi.org/10.1021/acscatal.7b02974
- Stephen J. Tereniak and Shannon S. Stahl . Mechanistic Basis for Efficient, Site-Selective, Aerobic Catalytic Turnover in Pd-Catalyzed C–H Imidoylation of Heterocycle-Containing Molecules. Journal of the American Chemical Society 2017, 139
(41)
, 14533-14541. https://doi.org/10.1021/jacs.7b07359
- Amanda L. Dewyer and Paul M. Zimmerman . Simulated Mechanism for Palladium-Catalyzed, Directed γ-Arylation of Piperidine. ACS Catalysis 2017, 7
(8)
, 5466-5477. https://doi.org/10.1021/acscatal.7b01390
- Humair M. Omer and Peng Liu . Computational Study of Ni-Catalyzed C–H Functionalization: Factors That Control the Competition of Oxidative Addition and Radical Pathways. Journal of the American Chemical Society 2017, 139
(29)
, 9909-9920. https://doi.org/10.1021/jacs.7b03548
- David L. Davies, Stuart A. Macgregor, and Claire L. McMullin . Computational Studies of Carboxylate-Assisted C–H Activation and Functionalization at Group 8–10 Transition Metal Centers. Chemical Reviews 2017, 117
(13)
, 8649-8709. https://doi.org/10.1021/acs.chemrev.6b00839
- Weigao Hu, Jia Zheng, Jianxiao Li, Bifu Liu, Wanqing Wu, Haiyang Liu, and Huanfeng Jiang . Assembly of Polysubstituted Maleimides via Palladium-Catalyzed Cyclization Reaction of Alkynes with Isocyanides. The Journal of Organic Chemistry 2016, 81
(24)
, 12451-12458. https://doi.org/10.1021/acs.joc.6b02227
- Shuguang Zhou, Jinhu Wang, Lili Wang, Kehao Chen, Chao Song, and Jin Zhu . Co(III)-Catalyzed, Internal and Terminal Alkyne-Compatible Synthesis of Indoles. Organic Letters 2016, 18
(15)
, 3806-3809. https://doi.org/10.1021/acs.orglett.6b01805
- Lvli Chen, Dong Xiong, Zeyu Yang, Yuyao Chen, Jian Xiao, Yin Tian, Jianfeng Zheng. Atom-economic metal free mediated difunctionalization of isocyanides with 3-methyleneoxindoles and 3-methylene-benzofuranones. Organic Chemistry Frontiers 2024, 11
(20)
, 5868-5875. https://doi.org/10.1039/D4QO01369G
- Liwei Zhou, Xiahong Chen, Qiong Peng, Zhiwei Li, Shujia Qiao, Guobo Deng, Yun Liang, Ming Lei, Yuan Yang. A Cascade C(sp
3
)−H Annulation Involving
C
(alkyl),
C
(alkyl)‐Palladacycle Intermediates. Angewandte Chemie International Edition 2024, https://doi.org/10.1002/anie.202412336
- Liwei Zhou, Xiahong Chen, Qiong Peng, Zhiwei Li, Shujia Qiao, Guobo Deng, Yun Liang, Ming Lei, Yuan Yang. A Cascade C(sp3)−H Annulation Involving C(alkyl),C(alkyl)‐Palladacycle Intermediates. Angewandte Chemie 2024, https://doi.org/10.1002/ange.202412336
- Weirong Wu, Xufang Zhao, Guang Chen, Lingjun Liu, Yulin Li, Tao Chen, Tony D. James, Yuxia Liu. Overlooked potential of
N
,
N
-bidentate directing-groups in Ni-catalyzed C–H functionalization of benzamides. Chemical Communications 2023, 59
(4)
, 482-485. https://doi.org/10.1039/D2CC06177E
- Abing Duan, Fengjiao Xiao, Yu Lan, Linbin Niu. Mechanistic views and computational studies on transition-metal-catalyzed reductive coupling reactions. Chemical Society Reviews 2022, 51
(24)
, 9986-10015. https://doi.org/10.1039/D2CS00371F
- Fulin Zhang, Ruihua Zhao, Lei Zhu, Yinghua Yu, Saihu Liao, Zhi-Xiang Wang, Xueliang Huang. Divergent isoindolinone synthesis through palladium-catalyzed isocyanide bridging C–H activation. Cell Reports Physical Science 2022, 3
(3)
, 100776. https://doi.org/10.1016/j.xcrp.2022.100776
- Bingjie Wang, Jin Xuan, Xiaoyong Yang, Zhishan Bai. Synergistic DFT-guided design and microfluidic synthesis of high-performance ion-imprinted biosorbents for selective heavy metal removal. Colloids and Surfaces A: Physicochemical and Engineering Aspects 2021, 626 , 127030. https://doi.org/10.1016/j.colsurfa.2021.127030
- Xue Chen, Zhen Wang, Jinyong Zhou, Yunkui Liu, Hongwei Jin, Bingwei Zhou. Nickel-catalyzed remote hydrosilylation of unconjugated enones with bulky triphenylsilane. Organic & Biomolecular Chemistry 2021, 19
(37)
, 8021-8024. https://doi.org/10.1039/D1OB01477C
- Qianqian Deng, Fangjing Mu, Yan Qiao, Donghui Wei. N‐Heterocyclic Carbene‐Catalyzed Asymmetric C−O Bond Construction Between Benzoic Acid and
o
‐Phthalaldehyde: Mechanism and Origin of Stereoselectivity. Chemistry – An Asian Journal 2021, 16
(16)
, 2346-2350. https://doi.org/10.1002/asia.202100351
- Xinyu Shen, Wenjuan Wang, Qiong Wang, Jianbiao Liu, Fang Huang, Chuanzhi Sun, Chong Yang, Dezhan Chen. Mechanism of iron complexes catalyzed in the
N
-formylation of amines with CO
2
and H
2
: the superior performance of N–H ligand methylated complexes. Physical Chemistry Chemical Physics 2021, 23
(31)
, 16675-16689. https://doi.org/10.1039/D1CP00608H
- Wenjing Liu, Zheyuan Liu, Xiaowei Liu, Yanfeng Dang. Mechanism of Pd-catalysed C(sp
3
)–H arylation of thioethers with Ag(
i
) additives. Organic & Biomolecular Chemistry 2021, 19
(31)
, 6766-6770. https://doi.org/10.1039/D1OB00704A
- Cheng Wang, Tian Du, Yunfeng Deng, Jiarong Yao, Riqing Li, Xuxia Zhao, Yu Jiang, Haipeng Wei, Yanfeng Dang, Rongjin Li, Yanhou Geng. High-yield and sustainable synthesis of quinoidal compounds assisted by keto–enol tautomerism. Chemical Science 2021, 12
(27)
, 9366-9371. https://doi.org/10.1039/D1SC01685G
- Yao Shi, Hongsheng Ma, Jiaxuan Shao, Chao Deng. Theoretical studies on the mechanism of Pd2+-catalyzed regioselective C-H alkylation of indole with MesICH2CF3OTf. Journal of Molecular Modeling 2021, 27
(5)
https://doi.org/10.1007/s00894-021-04773-6
- . Theoretical Study of
Pd
‐Catalysis. 2021, 181-255. https://doi.org/10.1002/9783527346028.ch5
- Quan Zheng, Chen‐Fu Liu, Jie Chen, Guo‐Wu Rao. C–H Functionalization of Aromatic Amides. Advanced Synthesis & Catalysis 2020, 362
(7)
, 1406-1446. https://doi.org/10.1002/adsc.201901158
- Jing Zhang, Qingli Zhang, Zhenyuan Zhu, Bingkai Wang. Theoretical investigation on the palladium-catalyzed selective formation of spirocyclenes from dienallenes. Journal of Organometallic Chemistry 2020, 912 , 121173. https://doi.org/10.1016/j.jorganchem.2020.121173
- Dandan Jiang, Mingxing Fu, Yajun Zhang, Qianqian Li, Kai Guo, Yanhui Yang, Lili Zhao. Mechanistic Study of Unprecedented Highly Regioselective Hydrocyanation of Terminal Alkynes: Insight into the Origins of the Regioselectivity and Ligand Effects. Journal of Computational Chemistry 2020, 41
(4)
, 279-289. https://doi.org/10.1002/jcc.26099
- Weiqiang Lai, Kai Zhang, Penghui Shao, Liming Yang, Lin Ding, Spyros G. Pavlostathis, Hui Shi, Liezhao Zou, Dahao Liang, Xubiao Luo. Optimization of adsorption configuration by DFT calculation for design of adsorbent: A case study of palladium ion-imprinted polymers. Journal of Hazardous Materials 2019, 379 , 120791. https://doi.org/10.1016/j.jhazmat.2019.120791
- Shrikant M. Khake, Naoto Chatani. Chelation-Assisted Nickel-Catalyzed C−H Functionalizations. Trends in Chemistry 2019, 1
(5)
, 524-539. https://doi.org/10.1016/j.trechm.2019.06.002
- Caitlin V. Kozack, Jennifer A. Sowin, Jonathan N. Jaworski, Andrei V. Iosub, Shannon S. Stahl. Aerobic Acyloxylation of Allylic C−H Bonds Initiated by a Pd
0
Precatalyst with 4,5‐Diazafluoren‐9‐one as an Ancillary Ligand. ChemSusChem 2019, 12
(13)
, 3003-3007. https://doi.org/10.1002/cssc.201900727
- Tianyou Zhang, Jingyi Qiao, He Song, Feng Xu, Xiaochong Liu, Chunzhao Xu, Junjie Ma, Hao Liu, Zhizhong Sun, Wenyi Chu. Cu(OAc)
2
-Mediated benzimidazole-directed C–H cyanation using 2-(4-methylpiperazin-1-yl)acetonitrile as the cyano source. New Journal of Chemistry 2019, 43
(23)
, 9084-9089. https://doi.org/10.1039/C9NJ00776H
- Hua Zhao, Xiaoru Shao, Zhineng Qing, Taimin Wang, Xiaoming Chen, Hongjian Yang, Hongbin Zhai. Cobalt‐Catalyzed 2‐(1‐Methylhydrazinyl)pyridine‐Assisted Direct C−H/N−H Functionalization of Benzoyl Hydrazide with Isocyanide: Efficient Synthesis of Iminoisoindolinone Derivatives. Advanced Synthesis & Catalysis 2019, 361
(7)
, 1678-1682. https://doi.org/10.1002/adsc.201801459
- Yan Qiao, Jimin Zhao, Junbiao Chang, Donghui Wei. Insights into the Oxidative Palladium‐Catalyzed Regioselective Synthesis of 3‐Arylindoles from N−Ts‐Anilines and Styrenes: A Computational Study. ChemCatChem 2019, 11
(2)
, 780-789. https://doi.org/10.1002/cctc.201801531
- Yu Zhou, Zhenfeng Shang, Ruifang Li, Xiufang Xu. Mechanistic studies: enantioselective palladium(
ii
)-catalyzed intramolecular aminoarylation of alkenes by dual N–H and aryl C–H bond cleavage. Organic Chemistry Frontiers 2018, 5
(22)
, 3256-3262. https://doi.org/10.1039/C8QO00925B
- Po Hu, Shaowei Wang, YouJia Wang, Chao Deng, Weihua Zhang. Theoretical studies on the mechanism of Pd
2+
-catalyzed regioselective C–H acylation of azoxybenzenes with α-oxocarboxylic acids. Dalton Transactions 2018, 47
(41)
, 14644-14651. https://doi.org/10.1039/C8DT03154A
- Chunhui Shan, Lei Zhu, Ling-Bo Qu, Ruopeng Bai, Yu Lan. Mechanistic view of Ru-catalyzed C–H bond activation and functionalization: computational advances. Chemical Society Reviews 2018, 47
(20)
, 7552-7576. https://doi.org/10.1039/C8CS00036K
- Xueli Cheng. Theoretical investigation on the C H activation of an enaminone and its coupling reaction with diphenylacetylene to a naphthalene catalyzed by Rh(III) complexes. Molecular Catalysis 2018, 452 , 100-107. https://doi.org/10.1016/j.mcat.2018.04.008
- Jiandong Guo, Yu Lu, Ruihua Zhao, Zheyuan Liu, Wasihun Menberu, Zhi‐Xiang Wang. Strong Preference of the Redox‐Neutral Mechanism over the Redox Mechanism for the Ti
IV
Catalysis Involved in the Carboamination of Alkyne with Alkene and Diazene. Chemistry – A European Journal 2018, 24
(27)
, 7010-7025. https://doi.org/10.1002/chem.201800339
- Shu‐Yuan Yu, Ping Ren, Hui‐Min Zheng, Cheng‐Gen Zhang. Copolymerization Mechanisms of Propylene and Norbornadiene Catalyzed by Zirconocene Complexes: A Density Functional Theory Study. Bulletin of the Korean Chemical Society 2018, 39
(3)
, 381-385. https://doi.org/10.1002/bkcs.11399
- Deepti Kalsi, Nagaraju Barsu, Basker Sundararaju. Co
III
‐Catalyzed Isonitrile Insertion/Acyl Group Migration Between C−H and N−H bonds of Arylamides. Chemistry – A European Journal 2018, 24
(10)
, 2360-2364. https://doi.org/10.1002/chem.201705710
- Yinuo Yang, Julong Jiang, Haizhu Yu, Jing Shi. Mechanism and Origin of the Stereoselectivity in the Palladium‐Catalyzed
trans
Hydroboration of Internal 1,3‐Enynes with an Azaborine‐Based Phosphine Ligand. Chemistry – A European Journal 2018, 24
(1)
, 178-186. https://doi.org/10.1002/chem.201704035
- Jian-Biao Liu, Ying-Ying Tian, Xin Zhang, Lu-Lin Wang, De-Zhan Chen. A computational mechanistic study of Pd(
ii
)-catalyzed γ-C(sp
3
)–H olefination/cyclization of amines: the roles of bicarbonate and ligand effect. Dalton Transactions 2018, 47
(14)
, 4893-4901. https://doi.org/10.1039/C8DT00015H
- Lin-Lin Zhang, Xiang-Yun Wang, Kun-Yao Jiang, Bing-Yuan Zhao, Hui-Min Yan, Xiao-Yun Zhang, Zhu-Xia Zhang, Zhen Guo, Chi-Ming Che. A theoretical study on the oxidation of alkenes to aldehydes catalyzed by ruthenium porphyrins using O
2
as the sole oxidant. Dalton Transactions 2018, 47
(15)
, 5286-5297. https://doi.org/10.1039/C8DT00614H
- Xiang Zhang. Mechanistic study on silver-catalyzed direct amination of unactivated C H bond. Journal of Organometallic Chemistry 2017, 832 , 1-8. https://doi.org/10.1016/j.jorganchem.2017.01.006
- Bingrui Song, Bin Xu. Metal-catalyzed C–H functionalization involving isocyanides. Chemical Society Reviews 2017, 46
(4)
, 1103-1123. https://doi.org/10.1039/C6CS00384B
- Jiandong Guo, Xi Deng, Chunyu Song, Yu Lu, Shuanglin Qu, Yanfeng Dang, Zhi-Xiang Wang. Differences between the elimination of early and late transition metals: DFT mechanistic insights into the titanium-catalyzed synthesis of pyrroles from alkynes and diazenes. Chemical Science 2017, 8
(3)
, 2413-2425. https://doi.org/10.1039/C6SC04456E
- Pin Xiao, Dan Wu, Wei-Hai Fang, Ganglong Cui. Mechanistic insights into the light-driven hydrogen evolution reaction from formic acid mediated by an iridium photocatalyst. Catalysis Science & Technology 2017, 7
(13)
, 2763-2771. https://doi.org/10.1039/C7CY00785J
- Weixi Fan, Chuanzhi Sun, Fang Huang, Jianbiao Liu, Xue Zhao, Xiehuang Sheng, Dezhan Chen. Mechanistic insight into the regioselectivity of Pd(
ii
)-catalyzed C–H functionalization of N-methoxy cinnamamide. Dalton Transactions 2017, 46
(16)
, 5288-5296. https://doi.org/10.1039/C7DT00547D
- Yujie Liang, Yuan-Ye Jiang, Yuxia Liu, Siwei Bi. Mechanism of Pd-catalyzed acylation/alkenylation of aryl iodide: a DFT study. Organic & Biomolecular Chemistry 2017, 15
(29)
, 6147-6156. https://doi.org/10.1039/C7OB01021D
- Chiming Wang, Xin Chen, Qingyun Liu, Dongdong Qi, Kang Wang, Jianzhuang Jiang. Combinatorial experimental and DFT theoretical investigation over the formation mechanism of a binuclear phthalocyanine dimer. RSC Advances 2017, 7
(84)
, 53043-53047. https://doi.org/10.1039/C7RA10678E
- Axel Klein, Aaron Sandleben, Nicolas Vogt. Synthesis, Structure and Reactivity of Cyclometalated Nickel(II) Complexes: A Review and Perspective. Proceedings of the National Academy of Sciences, India Section A: Physical Sciences 2016, 86
(4)
, 533-549. https://doi.org/10.1007/s40010-016-0289-6
- Carlo Alberto Gaggioli, Leonardo Belpassi, Francesco Tarantelli, Daniele Zuccaccia, Jeremy N. Harvey, Paola Belanzoni. Dioxygen insertion into the gold(
i
)–hydride bond: spin orbit coupling effects in the spotlight for oxidative addition. Chemical Science 2016, 7
(12)
, 7034-7039. https://doi.org/10.1039/C6SC02161A
- Yuan-Ye Jiang, Xiaoping Man, Siwei Bi. Advances in theoretical study on transition-metal-catalyzed C−H activation. Science China Chemistry 2016, 59
(11)
, 1448-1466. https://doi.org/10.1007/s11426-016-0330-3
- T. Gensch, M. N. Hopkinson, F. Glorius, J. Wencel-Delord. Mild metal-catalyzed C–H activation: examples and concepts. Chemical Society Reviews 2016, 45
(10)
, 2900-2936. https://doi.org/10.1039/C6CS00075D
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