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Synthesis and conjugate addition reactions of N-(beta-nitroalkyl)amides
Journal article   Peer reviewed

Synthesis and conjugate addition reactions of N-(beta-nitroalkyl)amides

Peter A. Wade, Nicholas Paparoidamis, Jennie Liao, Brian C. Manor and Kristine DeBolt
Tetrahedron letters, v 56(48), pp 6722-6725
02 Dec 2015

Abstract

Chemistry Chemistry, Organic Physical Sciences Science & Technology
Nitration of several di- and trisubstituted alkenes with lithium nitrate/TFAA in nitrile solvents afforded N-(beta-nitroalkyl)amides in 28-72% yields. Nitration of 1,1-diphenylethene gave 1,1-diphenyl-2-nitroethene in 52% yield instead of the N-(beta-nitroalkyl)amide. Reaction of 1-methylcyclohexene using excess lithium nitrate/TFAA in acetonitrile gave a single diastereomer of N-(2,6-dinitro-1-cyclohexyl)acetamide in 55% yield. N-(beta-Nitroalkyl)amides underwent diastereoselective Michael addition to a variety of Michael acceptors. Diastereoselectivity is rationalized on the basis of internal hydrogen-bonding within the intermediate nitronate resulting in a strongly-biased Michael donor conformation. (C) 2015 Elsevier Ltd. All rights reserved.

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Collaboration types
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Web of Science research areas
Chemistry, Organic
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