An efficient method for the synthesis of a compound of formula 2:
1
is disclosed which comprises reacting a 4-acyl-2-azetidinone with a titanium, zirconium or hafnium enolate of a 1-hydroxy-2-butanone derivative.
一种合成化合物2:1的有效方法被揭示,该方法包括将4-酰基-2-氮杂
环己酮与
1-羟基-2-丁酮衍
生物的
钛、
锆或
铪烯醇反应。