Amphoteric Amino Aldehydes Reroute the Aza-Michael Reaction
摘要:
Amphoteric amino aldehydes, which exist as stable dimers, participate in an aza-Michael/aldol domino reaction with alpha,beta-unsaturated aldehydes to afford stable 1,5-aminohydroxyaldehydes in high yields and diastereoselectivies. The reaction outcome hinges upon the dimeric nature of amphoteric amino aldehydes and the orthogonality between the NH aziridine and the two aldehyde functionalities during the reaction. Through the use of reaction conditions that disfavor dimer dissociation, the aza-Michael process has been directed toward a novel 8-(enolendo)-exo-trig cyclization. The results described herein further demonstrate the potential of amphoteric molecules in reaction discovery.
Amphoteric Amino Aldehydes Reroute the Aza-Michael Reaction
摘要:
Amphoteric amino aldehydes, which exist as stable dimers, participate in an aza-Michael/aldol domino reaction with alpha,beta-unsaturated aldehydes to afford stable 1,5-aminohydroxyaldehydes in high yields and diastereoselectivies. The reaction outcome hinges upon the dimeric nature of amphoteric amino aldehydes and the orthogonality between the NH aziridine and the two aldehyde functionalities during the reaction. Through the use of reaction conditions that disfavor dimer dissociation, the aza-Michael process has been directed toward a novel 8-(enolendo)-exo-trig cyclization. The results described herein further demonstrate the potential of amphoteric molecules in reaction discovery.
Amphoteric Amino Aldehydes Reroute the Aza-Michael Reaction
作者:Ryan Hili、Andrei K. Yudin
DOI:10.1021/ja9072194
日期:2009.11.18
Amphoteric amino aldehydes, which exist as stable dimers, participate in an aza-Michael/aldol domino reaction with alpha,beta-unsaturated aldehydes to afford stable 1,5-aminohydroxyaldehydes in high yields and diastereoselectivies. The reaction outcome hinges upon the dimeric nature of amphoteric amino aldehydes and the orthogonality between the NH aziridine and the two aldehyde functionalities during the reaction. Through the use of reaction conditions that disfavor dimer dissociation, the aza-Michael process has been directed toward a novel 8-(enolendo)-exo-trig cyclization. The results described herein further demonstrate the potential of amphoteric molecules in reaction discovery.
[EN] METHODS OF PREPARING CYCLIC AMINO ACID MOLECULES USING ARYLBORONIC OR ARYLBORINIC ACID CATALYSTS<br/>[FR] PROCÉDÉS DE SYNTHÈSE DE MOLÉCULES D'ACIDES AMINÉS CYCLIQUES UTILISANT DES CATALYSEURS DE TYPE ACIDE ARYLBORONIQUE OU ARYLBORINIQUE
申请人:UNIV TORONTO
公开号:WO2012109735A1
公开(公告)日:2012-08-23
Macrocyclization of amino acids or linear peptides upon reaction with amphoteric amino aldehydes and isocyanides in the presence of a catalyst selected from an arylboronic acid or an aryl borinic acid is provided.
Hili, Ryan; Rai, Vishal; Yudin, Andrei K., Journal of the American Chemical Society, 2010, vol. 132, p. 2889 - 2891