Diels-Alder reaction of α-substituted ac
✍
Kei Takeda; Ikuhiro Imaoka; Eiichi Yoshii
📂
Article
📅
1994
🏛
Elsevier Science
🌐
French
⚖ 791 KB
The usefulness of Diels-Alder (D-A) reaction in organic synthesis has been attributed to its high stemoselectivity based on endo cycloaddition. which is explained by the concept of secondary orbital overlap in the transition state.1 Exo-mode addition, however, can predominate in some cases,"5 partic