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Note | Special issue | Vol 66, No. 1, 2005, pp.557-562
Published online, 20th September, 2005
DOI: 10.3987/COM-05-S(T)51
Heterocycles from Ylides. Part IX. A Convenient Synthesis of 1-Sulfonyl-2,3-disubstituted 2,3-Dihydroindoles

Giuseppe Cremonesi, Piero Dalla Croce,* and Concetta La Rosa

*Dipartimento di Chimica Organica e Industriale, Centro C. N. R., Università degli Studi di Milano, V. Venezian 21, I-20133 Milano, Italy


The reaction of sulfur ylides (1) with N-(2-bromomethylphenyl)benzenesulfonamides (4) gives 2,3-dihydroindoles (5) whose structure and stereochemistry were assigned on the basis of analytical and spectroscopic data. Some chemical transformations of 5 are reported.