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The influence of protective groups on diastereofacial selectivity of Diels-Alder cycloaddition reactions
β Scribed by Benjamin W. Gung; David A. Mareska; Anastas Karipidis; Thomas Henry
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 664 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0899-0042
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π SIMILAR VOLUMES
The preparation of methyl-substituted 1,2-dimethylenecyclopentanes and their reactivity in (4 + 2) cycloadditions with a,&unsaturated carboxylic esters and nitriles is studied. In kinetic measurements the methyl groups show a moderately rate-enhancing effect. The results are compared with those for
L'w:~ 1111' MINDO/3 msthod, variation of thr potential barrier for the Dick-Alder rcaclion between I-hydroxybutadicnc .md s~ralsin, cJtA?'zcd b? BF3 and NH:. hJs been studied. An interpretaGon of the experimental facts about the inrrc.tsc of rqIosrlrcIiviry and stereo~ciccti~ it\ for Dick-Alder rext