Cinchona alkaloid-based polymer-bound phase-transfer catalysts: Efficient enantioselective alkylation of benzophenone imine of glycine esters

Cinchona alkaloid-based polymer-bound phase-transfer catalysts: Efficient enantioselective alkylation of benzophenone imine of glycine esters
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基于金鸡纳生物碱的聚合物结合相转移催化剂:甘氨酸酯的二苯甲酮亚胺的高效对映选择性烷基化

DOI:
10.1007/s11030-005-8112-3
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发表时间:
2005
影响因子:
3.8
通讯作者:
D. Cahard
D. Cahard
中科院分区:
化学3区
文献类型:
--
作者:
Baptiste Thierry;J. Plaquevent;D. Cahard

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合成了交联聚苯乙烯键合和聚乙二醇键合相转移催化剂以及金鸡纳生物碱衍生物的均聚物。可溶性和不溶性聚合物都已被研究。 N-二苯基亚甲基甘氨酸丁基酯的对映选择性烷基化已在非均相和均相体系中成功进行。已获得高对映选择性(高达 96%)。聚合物结合的催化剂很容易回收,并且已经研究了有效回收的条件。
Cross-linked polystyrene-bound and poly(ethylene glycol)-bound phase-transfer catalysts as well as homopolymers of cinchona alkaloid derivatives have been synthesised. Both soluble and insoluble polymers have been investigated. The enantioselective alkylation ofN-diphenyl methylene glycinet-butyl ester has been successfully carried out in heterogeneous and homogeneous systems. High enantioselectivities (up to 96%) have been obtained. The polymer-bound catalysts have been easily recovered and conditions for efficient recycling have been studied.
DOI: 10.1021/ol049215u
发表时间: 2004-07-08
期刊: ORGANIC LETTERS
影响因子: 5.2
作者:
Ooi, T;Kameda, M;Maruoka, K
通讯作者: Maruoka, K
DOI: 10.1002/anie.200390167
发表时间: 2003-01-01
影响因子: 16.6
作者:
Ooi, T;Tayama, E;Maruoka, K
通讯作者: Maruoka, K
DOI: 10.1002/1521-3773(20021202)41:23
发表时间: 2002-01-01
影响因子: 16.6
作者:
Ooi, T;Taniguchi, M;Maruoka, K
通讯作者: Maruoka, K
DOI: 10.1002/1521-3773(20020503)41:9
发表时间: 2002-01-01
影响因子: 16.6
作者:
Ooi, T;Uematsu, Y;Maruoka, K
通讯作者: Maruoka, K