Lawesson's reagent → HCID 15337804, compound

Participants

Reaction Steps

10 g of 3-chloro-7,8,9,10-tetrahydroazepino[2,1-b]quinazolin-12(6H)-one was treated with 15 g of Lawesson's reagent in toluene at reflux under nitrogen, until the starting material was consumed, as checked by TLC, using chloroform as eluent (24 hours). The mixture was concentrated in vacuo and chromatographed on silica gel, using chloroform as eluent. The bright yellow material was recrystallized from hexane-ethyl acetate, giving lemon-yellow needles, m.p. 99° C.-101° C.

Provenance & Evidence