Abstract
Cyclization of ethyl endo-5-norbornene-2-carboxylate with 1,3-benzothiazole-2-sulfenyl and 3-methoxycarbonylpyridine-2-sulfenyl chlorides follows two directions, namely, electophilic lactonization of unsaturated ester or polar cycloaddition of sulfenylating reagent to the multiple bond accompanied by ring closure by the nitrogen atom of the thiohetaryl fragment.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1260–1262, June, 2010.
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Osmanov, V.K., Borisova, G.N., Kachala, V.V. et al. Cyclization of ethyl endo-5-norbornene-2-carboxylate with hetarene sulfenyl chlorides. Russ Chem Bull 59, 1289–1291 (2010). https://doi.org/10.1007/s11172-010-0234-9
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DOI: https://doi.org/10.1007/s11172-010-0234-9