Enantioselective synthesis of 2-(3′-alkyl-2′-carboxy cyclopropyl)glycines
摘要:
New conformationally restricted glutamate analogues 2-(3'-alkyl-2'-carboxycyclopropyl)glycines (1a-c and 2a-c) were enantioselectively prepared by the addition-elimination reaction of the chiral lithium bislactim ether anion of 3 to racemic 4-alkyl-4-bromobut-2-enoates, (C) 1999 Elsevier Science Ltd, All rights reserved.
γ-Phenylseleno α,β-unsaturated esters, prepared from α-phenylseleno aldehydes by Horner-Emmons reaction and treated with bromine or sulfuryl chloride, form adducts whose decomposition leads to α-halo β,γ-unsaturated esters in fair to good yields.
Reaction of β-trimethylsiloxy α-diazocarbonyl compounds with trimethylsilyl halides: a novel diazo decomposition process
作者:Fengping Xiao、Zhenhua Zhang、Jian Zhang、Jianbo Wang
DOI:10.1016/j.tetlet.2005.10.070
日期:2005.12
When β-trimethylsiloxy α-diazocarbonyl compounds were treated with trimethylsilyl halide, a mixture of α- and γ-halide substituted unsaturated carbonyl compounds was obtained. The mechanism of this novel diazo decomposition process is discussed.
Notiz über die Umsetzung von ungesättigten Bromcarbonylverbindungen mit primären Aminen. 2. Mitteilung: Die Darstellung 1,2,5-substituierter Pyrrole
作者:K. E. Schulte、F. Zinnert
DOI:10.1002/ardp.19552880204
日期:——
Enantioselective synthesis of 2-(3′-alkyl-2′-carboxy cyclopropyl)glycines
作者:Angel Mazón、Concepción Pedregal、William Prowse
DOI:10.1016/s0040-4020(99)00333-6
日期:1999.5
New conformationally restricted glutamate analogues 2-(3'-alkyl-2'-carboxycyclopropyl)glycines (1a-c and 2a-c) were enantioselectively prepared by the addition-elimination reaction of the chiral lithium bislactim ether anion of 3 to racemic 4-alkyl-4-bromobut-2-enoates, (C) 1999 Elsevier Science Ltd, All rights reserved.