## Abstract An improved procedure for intramolecular cyclization of tertiary alkenols using benzeneselenyl halides has been developed. We found that cyclization can be facilitated by pyridine. Thus, in the presence of an equimolar amount of pyridine, a chemospecific reaction could be observed that
ChemInform Abstract: Pyridine-Facilitated Phenylselenoetherification of Some Tertiary Alkenols.
โ Scribed by Biljana M. Mojsilovic; Zorica M. Bugarcic
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 30 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0931-7597
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โฆ Synopsis
Abstract
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## Abstract magnified image Studies on the phenylselenoetherification of some ฮ^4^โalkenols in the presence of pyridine and some Lewis acids are described. All alkenols underwent intramolecular cyclization yielding corresponding tetrahydrofuran or tetrahydropyran derivatives. Yield and diastereomer
## Abstract An improved procedure for intramolecular cyclization of some ฮ^5^โalkenols, 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