Facile Synthesis of 1,4-Benzodiazepin-5-one Derivatives via Intramolecular Aza-Wittig Reaction. Application to an Efficient Synthesis of O-Benzyl DC-81

Article abstract of DOI:10.1021/jo00118a016

The tandem Staudinger/aza-Wittig reaction of N-(o-azidobenzoyl)-α-amino acid esters gave the corresponding 1,4-benzodiazepin-5-one derivatives in moderate to good yields.This method was applied successfully to a new efficient synthesis of BzlDC-81.