Indium trichloride: a useful catalyst for ionic Diels–Alder reactions
✍ Scribed by B.Gopal Reddy; R Kumareswaran; Y.D Vankar
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- French
- Weight
- 79 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Indium trichloride (20 mol%) in nitromethane permits ionic Diels-Alder reaction of a variety of 2,3-olefinic acetals to form the corresponding cycloadducts in good yields with good endo selectivities.
📜 SIMILAR VOLUMES
At a loading as low as 0.5 mol% indium triflate has been found to catalyse the hetero Diels-Alder reaction. A three component coupling reaction between aldehydes, amines and Danishefsky's diene to afford tetrahydropyridine derivatives proceeds similarly in high yield.
Anhydrous indium trichloride is found to catalyze the reaction of Schiff's bases derived from substituted anilines with 3-chioro-lH-indole-2-carboxaldehyde and 3-chlorobenzo[b]thiophene-2-carboxaldehyde which resulted in new route to indolyl and benzo[b]thienyl imines. These imines reacted with cyel