𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Lewis acid-catalyzed diels-alder reactions of peri-hydroxylated naphthoquinones: A regiochemical divergence

✍ Scribed by T.Ross Kelly; Michel Montury


Publisher
Elsevier Science
Year
1978
Tongue
French
Weight
264 KB
Volume
19
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


The ability of Lewis acids to enhance regioselectivity in Die16 Alder reactions between unsymmetrical dienes and dienophiles is well documented. 192 In practice, selection of the specific Lewis acid employed in any particular reaction is usually based on the unscientific but eminently pragmatic approach of trial and error. It is generally assumed, however, that


📜 SIMILAR VOLUMES


On the mechanism of Diels—Alder reaction
✍ V. Branchadell; A. Oliva; J. Bertran 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 261 KB

The effect of Lewis acid catalysts on the mechanism of Diels-Alder reactions is studied using the MINDO/3 method. It is found that they tend to increase the two-step character of the process through a more important participation of the charge-transfer configuration.

Synthesis of decalin synthons of bioacti
✍ T. Mayelvaganan; Shreeshailkumar B. Hadimani; Sujata V. Bhat 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 189 KB

Diels-Alder reaction of 1,3,3-trimethyl-2-vinylcyclohexene I with conjugated ketones 2 -7 in the presence of Lewis acid leads to regto-and stereo-selective formation of bicyclic adducts 8 -13 versatile intermediates to labdanes, abietane and spongian diterpenoids.