## Abstract Oxyselenylation of 4βsubstituted 5βhexenβ1βols 1 with benzeneselenenyl trifluoromethanesulfonate proceeds by intramolecular __exo__ cyclization stereoselectively to give 3βsubstituted __trans__β or __cis__β2β(phenylselenenylmethyl)tetrahydropyrans 3. Formation of the __trans__ isomers i
β¦ LIBER β¦
Selenium induced stereoselective cyclization of N-substituted-4-hydroxy-5-hexenylamines
β Scribed by Matthew A. Cooper; A.David Ward
- Book ID
- 104214540
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- French
- Weight
- 263 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Tkr s&r&m induced cyclisafion of N-s~~fffKf~d 4-h~dro~-5-ke~y&mi~ occurs regioand sfereoseiectivt~~ to give ~-subsfitufed trans-2.~pkenylserenomefhyf~-3-h~d~~~i~ in rn~~te yield, Synth~~ of fkc ~io~caliy uctiue diof (81 ruas a&cued &a ox&f&n of fke pken@efeno moiety to fkc pkcnylsefenone and subsequent d~~~~f with sodium hydroxide.
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