Ar. Katritzky et al., A new three-carbon synthon for efficient synthesis of benzannelated and 1-(2-arylethenyl) heterocycles, J ORG CHEM, 65(23), 2000, pp. 8059-8062
The novel three-carbon synthon 1-(1H-1,2,3-benzotriazol-1-yl)-3-chloroaceto
ne for the synthesis of benzothiazoles, pyrido[1,2-a]indoles, and styryl-su
bstituted indolizines and imidazo[1,2-a]pyridines is reported. The proposed
routes are a general and efficient approach for heterocyclizations followe
d by benzannelations or attachment of arylethenyl pharmacophores.