Abstract
N-Phenylamide and phenyl (thio)esters of 3-phenylpropiolic acid add benzene in the presence of CF3SO3H or AlX3 (X = Cl, Br) to give 4,4-diphenyl-3,4-dihydroquinolin-2-one, 4,4-diphenyl-3,4-dihydrocoumarin, and 4,4-diphenyl-3,4-dihydrothiocoumarin, respectively.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 0840–0843, April, 2012.
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Ryabukhin, D.S., Vasilyev, A.V. & Vyazmin, S.Y. Reactions of N-phenylamide and phenyl (thio)esters of 3-phenylpropiolic acid with benzene under superelectrophilic activation. Russ Chem Bull 61, 843–846 (2012). https://doi.org/10.1007/s11172-012-0117-3
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DOI: https://doi.org/10.1007/s11172-012-0117-3