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Temperature dependence of polar and steric effects in CCl2 cycloadditions

โœ Scribed by Berndt Giese; Carola Neumann


Publisher
Elsevier Science
Year
1982
Tongue
French
Weight
181 KB
Volume
23
Category
Article
ISSN
0040-4039

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โœ D. Becker; N. Haddad; Y. Sahali ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 269 KB

It was found that in [2+2] intramolecular photocycloaddition the isomer ratio in system II is different from system I. Compounds 1 and 20 cyclize with high stereoselectivity to give in high yield 3 and 21 respectiveIy. The mechanistic consequences are discussed. The mechanism of [2+2] photocycloaddi