Auf das Zentralnervensystem wirkende Substanzen XXV. Reaktionen der ?-substituierten ?-Lactone II. Eine neue allgemeine Synthese ?-substituierter Propions�uren und deren Derivate
作者:Bruno J. R. Nicolaus、Luigi Mariani、Emilio Testa
DOI:10.1002/hlca.19610440427
日期:——
Hydrochloric acid and hydrobromic acid react with α-mono- and α, α-disubstituted β-lactones under ring cleavage leading unequivocally to the corresponding α-mono- or α, α-disubstituted β-halogenopropionic acids. These products are interesting starting materials for the preparation of new compounds and can be reduced by zinc and formic acid to the corresponding propionic acids. The described synthesis