ChemInform Abstract: One‐Pot Synthesis 4‐Substituted 4‐Alkoxy‐1,4‐dihydro‐3,1‐benzoxazine‐2‐thiones by the Reaction of 2‐Isothiocyanatobenzoates with Organolithiums.

Abstract

Alkyl-and aryllithium compounds as well as lithium enolates of tertiary acetamides or acetates undergo cyclization with isothiocyanates (I) to give the desired benzoxazines in an operationally very simple manner. -(KOBAYASHI*, K.; HASHIMOTO, H.; KANBE, Y.; KONISHI, H.; Tetrahedron 67 (2011) 25, 4535-4538, http://dx.