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[4 + 2] Cycloadditions of a vinylketenimine. New route toward functionalized cyclohexenone derivatives

โœ Scribed by Sonveaux, Etienne.; Ghosez, Leon.


Book ID
127014490
Publisher
American Chemical Society
Year
1973
Tongue
English
Weight
403 KB
Volume
95
Category
Article
ISSN
0002-7863

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๐Ÿ“œ SIMILAR VOLUMES


Cycloadditions of substituted benzopyran
โœ Peter J. Cremins; Suthiweth T. Saengchantara; Timothy W. Wallace ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 692 KB

The benxopyranones 1 and 3 reacted with 2.3-dimethyl-1,3-butadiene in the presence of titanium (IV) chloride to give the corresponding (4 + 2) cycloadducts 8 and 11, the former undergoing facile deformylation to give 9 and 10. Compounds 1.3. and 4 underwent efficient uncatalysed cycloaddition to lme