Heterocyclization of thiol esters of?-aminocarboxylic acids with the formation of 5-alkylthio-?4-1,3,2-oxazaphospholines
摘要:
The phosphorylation of the hydrochloride salt of S-butyl N-tert-butylaminothioacetate using phosphorus chlorides in the presence of triethylamine gave a new type of 1, 3, 2-oxazaphospholines with an alkylthio group at C5 in the oxazaphospholine ring.