Kumareswaran, R. ; Vankar, Padma S. ; Venkat Ram Reddy, M. ; Pitre, Sangeeta V. ; Roy, Raja ; Vankar, Yashwant D. (1999) Studies in Lewis acid and LiClO4 (or Nafion-H) catalysed ionic Diels-Alder reactions of chiral and achiral olefinic acetals respectively Tetrahedron, 55 (4). pp. 1099-1110. ISSN 0040-4020
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0040-4020(98)01088-6
Abstract
Chiral olefinic acetals derived from crotonaldehyde undergo ionic Diels-Alder reaction giving the corresponding cycloadducts in moderate to good diastereoselectivities. A variety of achiral olefinic acetals react with isoprene and cyclopentadiene to form the cycloadducts in good to excellent yields when catalysed by 4M LiClO4 in nitromethane or by Nafion-H in dichloromethane.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 58292 |
| Deposited On: | 31 Aug 2011 06:36 |
| Last Modified: | 31 Aug 2011 06:36 |
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