Article
Discovery-Oriented Approach To Organic Synthesis: Tandem Aldol Condensation-Michael Addition Reactions. Identifying Diastereotopic Hydrogens in an Achiral Molecule by NMR Spectroscopy
Purchase the full-text
- PDF/HTML,
figures/images,
references and tables,
(where available)
Abstract
We have found a beautiful example of anisochrony of diastereotopic acyclic methylene hydrogens in a symmetric diketone, synthesized by techniques traditionally performed in an introductory organic laboratory course. Synthesis of the diketone is high-yielding and easy to carry out, and the products can be directly isolated with a good degree of purity with no need of further manipulation. The reaction can be accomplished in a single laboratory session.
Keywords (Audience):
Second-Year UndergraduateKeywords (Domain):
Laboratory InstructionKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
NMR SpectroscopyCiting Articles
Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.
This article has been cited by 12 ACS Journal articles (5 most recent appear below).

Probing the Reactivity of Dimethylsulfoxonium Methylide with Conjugated and Nonconjugated Carbonyl Compounds: An Undergraduate Experiment Combining Synthesis, Spectral Analysis, and Mechanistic Discovery
James A. Ciaccio, Elena L. Guevara, Rabeka Alam and Christina D. D’agrosaJournal of Chemical Education2010 87 (8), 850-853Probing the Reactivity of Dimethylsulfoxonium Methylide with Conjugated and Nonconjugated Carbonyl Compounds: An Undergraduate Experiment Combining Synthesis, Spectral Analysis, and Mechanistic Discovery
James A. Ciaccio, Elena L. Guevara, Rabeka Alam and Christina D. D’agrosaJournal of Chemical Education2010 87 (8), 850-853We introduce students to dimethylsulfoxonium methylide (DMSY) epoxidation of aryl and nonconjugated aliphatic aldehydes and ketones without revealing that DMSY cyclopropanates enones by Michael-initiated ring closure (MIRC). Each student performs the ...

Teaching Research: A Curriculum Model That Works
Nancy E. Carpenter and Ted M. PappenfusJournal of Chemical Education2009 86 (8), 940Teaching Research: A Curriculum Model That Works
Nancy E. Carpenter and Ted M. PappenfusJournal of Chemical Education2009 86 (8), 940An interdisciplinary, two-credit, one-semester laboratory course required of second-year chemistry and biochemistry majors at a small, rural, undergraduate liberal arts institution is described. During the first half of the course students are provided ...

Peer Mentoring in the General Chemistry and Organic Chemistry Laboratories. The Pinacol Rearrangement: An Exercise in NMR and IR Spectroscopy for General Chemistry and Organic Chemistry Laboratories
Caleb A. Arrington , Jameica B. Hill , Ramin Radfar , David M. Whisnant and Charles G. BassJournal of Chemical Education2008 85 (2), 288Peer Mentoring in the General Chemistry and Organic Chemistry Laboratories. The Pinacol Rearrangement: An Exercise in NMR and IR Spectroscopy for General Chemistry and Organic Chemistry Laboratories
Caleb A. Arrington , Jameica B. Hill , Ramin Radfar , David M. Whisnant and Charles G. BassJournal of Chemical Education2008 85 (2), 288This article describes a discovery experiment for general chemistry and organic chemistry labs. Although the pinacol rearrangement has been employed in undergraduate organic laboratories before, in this application organic chemistry students act as ...

Incorporating Guided-Inquiry Learning into the Organic Chemistry Laboratory
Allen M. Schoffstall , Barbara A. GaddisJournal of Chemical Education2007 84 (5), 848Incorporating Guided-Inquiry Learning into the Organic Chemistry Laboratory
Allen M. Schoffstall , Barbara A. GaddisJournal of Chemical Education2007 84 (5), 848Informed science educators who are responsible for undergraduate laboratory programs strive to improve the effectiveness of learning in the laboratory. Guided-inquiry learning in the laboratory is one reasonable alternative (among others described here) ...

The State of Organic Teaching Laboratories
Gail HorowitzJournal of Chemical Education2007 84 (2), 346The State of Organic Teaching Laboratories
Gail HorowitzJournal of Chemical Education2007 84 (2), 346This review explores the dramatic changes that have taken place in the organic chemistry laboratory course over the last two to three decades. The most significant changes have been in the areas of pedagogy and technology. Significant inroads have been ...
Tools
-
Add to Favorites
-
Download Citation
-
Email a Colleague -
Permalink
Order Reprints
Rights & Permissions
Citation Alerts
History
- Received: August 03, 2009
Cart

ACS
Network






