Intramolecular diels‐alder reactions. IX. Syntheses of N‐benzylcyclolignan lactams
- 1 December 1972
- journal article
- research article
- Published by Wiley in Journal of Heterocyclic Chemistry
- Vol. 9 (6) , 1215-1218
- https://doi.org/10.1002/jhet.5570090604
Abstract
Four bis‐unsaturated N‐benzyl amides of the type where (C2) and (C2)' are variously trans‐CHCH and CC groups, were synthesized and refluxed in acetic anhydride. Three of them cyclized to form N‐benzylcyclolignan lactams by intramolecular Diels‐Alder processes. In one case [(C2) CC, (C2)' trans‐CHCH] the (C2) unit functioned as the dienophilic moiety.Keywords
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