Synthesis of phthalides via Pd/CNTs-catalyzed reaction of terminal alkynes and o-iodobenzoic acid under copper- and ligand-free conditions

被引:52
作者
Zhou, Lei [1 ]
Jiang, Huan-Feng [1 ]
机构
[1] S China Univ Technol, Coll Chem, Guangzhou 510640, Peoples R China
基金
中国国家自然科学基金;
关键词
phthalide; palladium; terminal alkynes; copper-free; ligand-free;
D O I
10.1016/j.tetlet.2007.09.170
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A phosphine- and copper-free protocol for the synthesis of phthalides via Pd/CNTs-catalyzed tandem coupling-cyclization process has been developed. The palladium immobilized on CNTs showed high catalytic activity, and the reactions with a variety of terminal alkynes and o-iodobenoic acid proceeded smoothly to give phthalides in moderate to good yields catalyzed by 0.1% mmol Pd/CNTs. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:8449 / 8452
页数:4
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