Ethyl 2-diazomalonyl chloride. An efficient diazoacylating reagent
摘要:
Ethyl 2-diazomalonyl chloride readily reacts with aromatic and aliphatic amines, alcohols, thiols, and amides for form a variety of alpha-diazo carbonyl species.
Origin of the Relative Stereoselectivity of the β-Lactam Formation in the Staudinger Reaction
作者:Lei Jiao、Yong Liang、Jiaxi Xu
DOI:10.1021/ja056711k
日期:2006.5.1
stereoselectivity of the beta-lactam formation is one of the critical issues in the Staudinger reaction. Although many attempts have been made to explain and to predict the stereochemical outcomes, the origin of the stereoselectivity remains obscure. We are proposing a model that explains the relative stereoselectivity based on a kinetic analysis of the cis/trans ratios of reaction products. The results were
Ethyl 2-diazomalonyl chloride. An efficient diazoacylating reagent
作者:Joseph P. Marino、Martin H. Osterhout、Alan T. Price、Scott M. Sheehan、Albert Padwa
DOI:10.1016/s0040-4039(00)75980-6
日期:1994.1
Ethyl 2-diazomalonyl chloride readily reacts with aromatic and aliphatic amines, alcohols, thiols, and amides for form a variety of alpha-diazo carbonyl species.
A Versatile Method for the Synthesis of 3-Alkoxycarbonyl <i>β</i>-Lactam Derivatives
various imines and subsequent desulfurization reactions were employed to synthesize 3-ethoxycarbonyl β-lactam derivatives. The results indicate that the current approach provides a convenient, mild, and versatilemethod for synthesizing a variety of 3-alkoxycarbonyl trans-β-lactam derivatives with good to excellent yields and diastereoselectivities.