Formal Nucleophilic Substitution of Bromocyclopropanes with Amides en route to Conformationally Constrained β-Amino Acid Derivatives
作者:Anthony R. Prosser、Joseph E. Banning、Marina Rubina、Michael Rubin
DOI:10.1021/ol101228k
日期:2010.9.17
A chemo- and diastereoselective protocol for the formal nucleophilicsubstitution of 2-bromocyclopropylcarboxamides with secondary amides is described. This method allows for convergent and highly selective synthesis of trans-β-aminocyclopropane carboxylic acidderivatives.
Enantiomerically pure 2,2-dibromocyclopropanecarboxylic acids, simple chiral building blocks
作者:Mark S. Baird、Peter Licence、Viacheslav V. Tverezovsky、Ivan G. Bolesov、William Clegg
DOI:10.1016/s0040-4020(99)00048-4
日期:1999.2
Simple chiralbuildingblocks 1-(R)- and 1-(S)-2,2-dibromocyclopropanecarboxylic acids and 2-(R)-bromo-1-(S)-cyclopropanecarboxylic acids and their 1-methyl analogues, have been obtained on a preparatively useful laboratory scale.