Ra. Aitken et N. Karodia, CONVENIENT SYNTHESIS OF CHIRAL ALPHA,BETA-ACETYLENIC GAMMA-AMINO ACID-DERIVATIVES AND GAMMA-AMINOBUTYRIC-ACID ANALOGS VIA STABILIZED YLIDES, Chemical communications, (17), 1996, pp. 2079-2080
Twelve examples of protected acetylenic amino acids are readily prepar
ed in a two-step procedure involving formation and flash vacuum pyroly
sis of chiral aminoacyl phosphorus ylides.