Baeyer-Villiger reaction accompanying novel cleavage of the acetal moiety. The Reformatsky reaction of 6 with sterically crowded 3-(2-bromopropionyl)-2-oxazolidone derivatives readily afforded the title key intermediate after sequential chemical manipulations.
(3R,4R)-4-乙酰氧基-3-[(R)-1-(甲酰氧基)乙基] -
2-氮杂环丁酮6可以通过[2 + 2 ]从(R)-3-羟基
丁酸高立体选择性地制备
氯磺酰基
异氰酸酯与2H,4H-1,3-二恶英衍
生物的]-环加成反应和伴随
乙缩醛部分新裂解的Baeyer-Villiger反应。6与空间拥挤的3-(2-
溴丙酰基)-2-
恶唑烷酮衍
生物的Reformatsky反应在连续的
化学操作后很容易提供标题关键中间体。