The effects of amine and acid catalysts on efficient chelation-assisted hydroacylation of alkene with aliphatic aldehyde
β Scribed by Eun-Ae Jo; Chul-Ho Jun
- Book ID
- 104096307
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- French
- Weight
- 287 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Efficient intermolecular hydroacylation of 1-alkene with aliphatic aldehyde was achieved using a catalyst mixture of cyclohexylamine, p-trifluoromethylbenzoic acid, Wilkinson's complex and 2-amino-3-picoline. The formation of unwanted aldol side-product was avoided through the conjugate addition of cyclohexylamine to the aldol intermediate that was initially generated, followed by the retro-Mannich-type fragmentation of the resulting b-aminoaldimine.
π SIMILAR VOLUMES
As a green alternative to classical homogeneous catalyst in toluene in closed vessels, the intermolecular hydroacylation of 1-alkenes with aldehydes by Rh(I) complex (Wilkinson catalyst) can be realized efficiently under solvent-free conditions. When coupled to microwave activation, it results in a