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Calix[6]arene derivatives bearing sulfonate and alkyl groups as surfactants in Sc(OTf)3-catalyzed Mukaiyama aldol reactions in water

✍ Scribed by Hong-Yu Tian; Yong-Jun Chen; Dong Wang; Cheng-Chu Zeng; Chao-Jun Li *

Publisher: Elsevier Science
Year: 2000
Tongue: French
Weight: 122 KB
Volume: 41
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)00257-4

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✦ Synopsis

Amphiphilic calix [6]arene derivatives 1a-b were found to be efficient surfactants for Sc(OTf) 3 -catalyzed Mukaiyama aldol reaction of silyl enol ethers with aldehydes in water. The results indicated that a hydrophobic microenvironment was formed in the reaction system, which is favorable to stabilize some labile silyl enol ethers and thus promotes the reactions.

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