The possibility of the cleavage of the C-C bond in acetylcyclopropane (ACP) under the action of water or alcohols in the presence of copper or palladium salts was demonstrated for the first time. At 175-180 degreesC, the reactions proceeded regioselectively with the cleavage of the C(1)-C(2) bond in the cyclopropane ring. The reaction of ACP with water afforded 5-hydroxypentan-2-one, bis(3-acetylpropyl) ether, and furan compounds, whereas the reactions with alcohols proceeded selectively to form 5-alkoxypentan-2-ones. The yields of the latter depend on the nature and structure of the alcohol, the maximum values (98%) being achieved in the case of primary alcohols.
[EN] CINCHONINE-DERIVED CATALYSTS AND METHODS OF USING SAME<br/>[FR] CATALYSEURS DÉRIVÉS DE CINCHONINE ET LEURS MÉTHODES D'UTILISATION
申请人:UNIV BRANDEIS
公开号:WO2017105439A1
公开(公告)日:2017-06-22
The present invention includes certain conchinine-derived phase-transfer catalysts of formula (I), compositions comprising the same, and methods of promoting asymmetric addition reactions using the same.
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作者:U. M. Dzhemilev、R. I. Khusnutdinov、A. M. Atnabaeva、Z. S. Muslimov、R. I. Parfenova、Yu. V. Tomilov
DOI:10.1023/a:1014010907818
日期:——
The possibility of the cleavage of the C-C bond in acetylcyclopropane (ACP) under the action of water or alcohols in the presence of copper or palladium salts was demonstrated for the first time. At 175-180 degreesC, the reactions proceeded regioselectively with the cleavage of the C(1)-C(2) bond in the cyclopropane ring. The reaction of ACP with water afforded 5-hydroxypentan-2-one, bis(3-acetylpropyl) ether, and furan compounds, whereas the reactions with alcohols proceeded selectively to form 5-alkoxypentan-2-ones. The yields of the latter depend on the nature and structure of the alcohol, the maximum values (98%) being achieved in the case of primary alcohols.