Facile intramolecular cycloadditions of 2-(N-Acylamino)-1-thia-1,3-dienes
β Scribed by Ian T. Barnish; Colin W.G. Fishwick; David R. Hill
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- French
- Weight
- 188 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Reaction of 1-indolylmagnesium iodidelo with the appropriate sulfonyldiene in benzene-ether (1: 1) at 0 "C resulted in a cycloaddition and after workup the teaahydrocarbazole product was isolated. Results from the reaction of a few 2-phenylsulfonyl 1,3-dienes are given in Table 1. In all cases only
8icyclo[3.2.l]octa-3,6-dien-2-ones photoisomerize to ketenes (J + 2; ,4 + 0): When the ketene is hfghly substituted, as in the octamethyl derivative ,$' or is unusually reactive, as in the chloroketene :), intramolecular cycloaddition (GZs + n2a) competes successfully with attack by external nucleop