Highly asymmetric induction in the Diels-Alder reaction of 3-alkoxycarbonyl-substituted coumarin
β Scribed by Katsuo Ohkata; Keiko Miyamoto; Shuji Matsumura; Kin-ya Akiba
- Book ID
- 103408752
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- French
- Weight
- 270 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Asymmetric inductive effects have been measured on the Diels-Alder reaction of dimethyl fumarate with o-quinodimethane bearing a chiral u-alkoxy group. The chiral substituents used were f-phenylethoxy, 2-(1-phenyl)propoxy, 1-(2\_phenyl)propoxy, 2-(4-phenyljbutoxy and l-cyclohexylethoxy. The greatest
Transient, chiral u-hydroxyacylnitroso compounds (2), able to form intramolecular hydrogen bonds, react stereoselectively with cyclopentadiene and cyclohexa-1,3-diene; the cycloadduct (6) of the latter diene and the nitroso derivative of (S)-mandelic acid has been converted into the known (-)-oxazin