## Abstract For Abstract see ChemInform Abstract in Full Text.
Use of organometallic complexes of ruthenium in the Lewis acid catalyzed hetero Diels-Alder reaction
✍ Scribed by J.W. Faller; C.J. Smart
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 258 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
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.
Enantioselective reaction of the aldehydes la-g and the 1,3-dicarbonyl compound 2 in the presence of the chiral Lewis acid 5, derived from diacetone glucose, leads in a sequential transformation consisting of a Knoevenagel condensation and an intramolecular Diels Alder reaction to the cycloadducts 4
## Abstract The Lewis acidity of various silyl triflates was quantified by utilizing [D~5~]pyridine as a ^2^H NMR spectroscopy probe. The chemical shifts of the ^2^H NMR signals for pyridine–silyl adducts are reported. The rate constants of silyl triflate catalyzed Diels–Alder reactions were determ