1370366-28-1Relevant articles and documents
Unexpected formation of benzofuran derivatives in the C-amidoalkylation of p-cresol with 4-chloro-N-(2,2-dichloro-2-phenylethylidene)benzenesulfonamide
Serykh,Rozentsveig,Rozentsveig,Chernyshev
, p. 1339 - 1344 (2012)
The C-amidoalkylation of p-cresol with 4-chloro-N-(2,2-dichloro-2- phenylethylidene)benzenesulfon-amide in the presence of H2SO 4, oleum, or a mixture of H2SO4 and P 4O10 was studied for the first time. It was shown that the reaction not only leads to the targeted 4-chloro-N-[2,2-dichloro-1-(2-hydroxy- 5-methylphenyl)-2-phenylethyl]benzenesulfonamide but is also accompanied by unexpected formation of the heterocyclic derivatives 4-chloro-N-(5-methyl-2- phenyl-1-benzofuran-3-yl)benzenesulfonamide and 5-methyl-3-phenyl-2-benzofuran- 2(3H)-one.