Inorganic-Salt-Free Reduction in Main-Group Chemistry: Synthesis of a Dibismuthene and a Distibene
- Paresh Kumar Majhi ,
- Hideaki Ikeda ,
- Takahiro Sasamori
, - Hayato Tsurugi ,
- Kazushi Mashima , and
- Norihiro Tokitoh
Abstract

A dibromobismuthine and a dibromostibine that bear 4-tBu-2,6-[CH(SiMe3)2]2-C6H2 (Tbb) groups were reduced with 2,3,5,6-tetramethyl-1,4-bis(trimethylsilyl)-1,4-diaza-2,5-cyclohexadiene to afford the corresponding stable dibismuthene (TbbBi═BiTbb) and the distibene (TbbSb═SbTbb), respectively. The only byproducts obtained were easily removable tetramethylpyrazine and bromotrimethylsilane. Importantly, inorganic salts were not generated in this reduction: i.e., this is a unique inorganic-salt-free method for the synthesis of compounds with multiple bonds between heavier main-group elements.
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