Lanthanum(III) Isopropoxide Catalyzed Chemoselective Transesterification of Dimethyl Carbonate and Methyl Carbamates

被引：42
|
作者：
Hatano, Manabu [1 ]
Kamiya, Sho [1 ]
Moriyama, Katsuhiko [1 ]
Ishihara, Kazuaki [1 ,2 ]
机构：
[1] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan
[2] CREST, Japan Sci & Technol Agcy JST, Chikusa Ku, Nagoya, Aichi 4648603, Japan
来源：
ORGANIC LETTERS | 2011年 / 13卷 / 03期
关键词：
TETRANUCLEAR-ZINC-CLUSTER; TERT-BUTYL ESTERS; LANTHANOID TRI-2-PROPOXIDES; INTERCHANGE REACTION; CARBOXYLIC ESTERS; EFFICIENT METHOD; ALCOHOLS; ESTERIFICATION; MILD; METHANOLYSIS;
D O I：
10.1021/ol102754y
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A practical transesterification of less reactive dimethyl carbonate and much less reactive methyl carbamates with primary (1 degrees), secondary (2 degrees), and tertiary (3 degrees) alcohols was established with the use of a lanthanum(III) complex, which was prepared in situ from lanthanum(III) isopropoxide (3 mol %) and 2-(2-methoxyethoxy)ethanol (6 mol %). In particular, corresponding carbonates and carbamates obtained were of synthetic utility from the viewpoint of the selective protection and/or deprotection of 1 degrees-, 2 degrees-, and 3 degrees-alcohols.
引用
收藏
页码：430 / 433
页数：4
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