An improved procedure for phenylselenoetherification of some Δ5??alkenols using pyridine, Ag2O, and some Lewis acids as catalysts
ZM Bugarčić, BM Mojsilović
Index: Bugarcic, Zorica M.; Mojsilovic, Biljana M. Heteroatom Chemistry, 2004 , vol. 15, # 2 p. 146 - 149
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Citation Number: 17
Abstract
Abstract An improved procedure for intramolecular cyclization of some Δ 5-alkenols, using PhSeX (X= Cl, Br) has been developed. We found that cyclization can be facilitated in the presence of pyridine, Ag 2 O, and some Lewis acids as catalysts. Thus catalytic amount of additives (pyridine and Ag 2 O) influences higher yields but equimolar amount achieves almost quantitative yield under extremely mild experimental conditions. In the presence of ...
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