Helvetica Chimica Acta p. 1923 - 1926 (1986)
Update date:2022-07-29
Topics:
Oppolzer, Wolfgang
Moretti, Robert
Successive treatment of chiral esters 1 with LiN(i-Pr)2/Me3SiCl and di(tert-butyl) azodicarboxylate/TiCl4/Ti(i-PrO)4 gave N,N'-di<(tert-butoxy)carbonyl>hydrazino esters 9 which on deacylation, hydrogenolysis, transesterification, and acidic hydrolysis furnished (2S)-α-amino acids 6 in high enantiomeric purity with efficient recovery of the auxiliary alcohol 7.
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Doi:10.1080/00498254.2018.1448949
(2018)Doi:10.1007/BF00953337
(1986)Doi:10.1246/bcsj.73.2139
(2000)Doi:10.1055/s-0028-1083203
(2008)Doi:10.1055/s-0028-1083521
(2008)Doi:10.1039/c39940000913
(1994)