S(N)2' RING-OPENING OF AZIRIDINES BEARING AN ALPHA,BETA-UNSATURATED ESTER GROUP WITH ORGANOCOPPER REAGENTS - A NEW STEREOSELECTIVE SYNTHETIC ROUTE TO (E)-ALKENE DIPEPTIDE ISOSTERES
N. Fujii et al., S(N)2' RING-OPENING OF AZIRIDINES BEARING AN ALPHA,BETA-UNSATURATED ESTER GROUP WITH ORGANOCOPPER REAGENTS - A NEW STEREOSELECTIVE SYNTHETIC ROUTE TO (E)-ALKENE DIPEPTIDE ISOSTERES, Journal of the Chemical Society. Perkin transactions. I, (11), 1995, pp. 1359-1371
Regio- and stereo-selective synthesis of (E)-alkene dipeptide isostere
s has been successfully achieved by exposing both (E)- and (Z)-N-(4-me
thylphenyl)sulfonyl-gamma,delta-epimino -alpha,beta-enoates to organoc
opper reagents at -78 degrees C for 30 min.