Studies on the Stability of Cycloprop-2-ene Carboxylate Dianions and Reactions with Electrophiles
作者:Laural A. Fisher、Joseph M. Fox
DOI:10.1021/jo801683n
日期:2008.11.7
the generation, stability, and reactivity of cycloprop-2-ene carboxylate dianions. It has been found that certain additives can have a substantial effect on the chemistry of cycloprop-2-ene carboxylate dianions. In particular, it was determined that amine N-oxide additives have a beneficial effect both on the stability of cycloprop-2-ene carboxylate dianions and on the rates that such dianions undergo
Dianion Approach to Chiral Cyclopropene Carboxylic Acids
作者:Lian-an Liao、Ni Yan、Joseph M. Fox
DOI:10.1021/ol047837+
日期:2004.12.1
[reaction: see text] In this Letter, we describe a general method for preparing the dianions of cyclopropene carboxylic acids, and we show that their subsequent reactions with electrophiles provide a general means for selectively introducing diverse types of functional groups. This provides a general method for the synthesis of chiral 1,2-disubstituted cyclopropenes, and opens new avenues for the enantioselective