127680-54-0Relevant articles and documents
A NOVEL SYNTHESIS OF THE 1β-METHYLCARBAPENEM KEY INTERMEDIATE EMPLOYING THE -CYCLOADDITION REACTION OF CHLOROSULFONYL ISOCYANATE WITH A 4H-1,3-DIOXIN DERIVATIVE
Ito, Yoshio,Kobayashi, Yuko,Terashima, Shiro
, p. 5631 - 5634 (1989)
A highly stereoselective synthetic route to the title compound was explored by featuring the -cycloaddition reaction of chlorosulfonyl isocyanate with the 4H-1,3-dioxin derivative readily obtainable from methyl (R)-3-hydroxybutyrate, the Baeyer-Villinger reaction resulting in novel cleavage of the acetal moiety, and the Reformatsky reaction with sterically crowded 3-(2-bromopropionyl)-2-oxazolidone derivatives.