Microwave acceleration in DABAL-Me3-mediated amide formation
Microwave acceleration in DABAL-Me3-mediated amide formation
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DOI:
10.1016/j.tetlet.2008.07.090
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发表时间:
2008-09-22
影响因子:
1.8
通讯作者:
Woodward, Simon
中科院分区:
文献类型:
--
作者:
Glynn, Daniel;Bernier, David;Woodward, Simon
Facile direct coupling of esters and secondary amines to afford tertiary amides proceeds under microwave irradiation using the air-stable trimethylaluminium source DABAL-Me-3 [(DABCO)(AlMe3)(2)]. Excellent yields (88-98%) are attained for cyclic secondary amines in reactions that are complete in 5-16 min. The process can be extended to the formation of Weinreb amides (upto 76% from commercial MeNHOMe center dot HCl) in a one-pot procedure using NaH to liberate the free methoxyamine. (C) 2008 Elsevier Ltd. All rights reserved.