5-Benzopyridyl-substituted 2-methyl- and 2-methyleneindolines

A method of synthesis of 5-(isoquinol-l-yl)- and 5-(quinol-2-yl)-1,3,3-trimethyl-2-methyleneindolines has been developed consisting of hetarylation of 1,2,3,3-tetra-methylindoline with isoquinoline and quinoline in the presence of benzoyl chloride, followed by oxidation and aromatization of N-benzoyl-1,2-dihydrobenzopyridine derivatives of 1,2,3,3-tetramethylindoline formed at the first stage to 5-benzopyridyl-substituted 2-methylene-indolines.For a preliminary communication on this subject, see [15].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1367–1372, October, 1989.