期刊
TETRAHEDRON LETTERS
卷 53, 期 14, 页码 1833-1836出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.01.127
关键词
(2,2-Difluoroethenylidene)bis(tributylstannane); Arylation reaction; 2,2-Diaryl-1,1-difluoroethenes
资金
- National Research Foundation of Korea [2011-0022295]
- National Research Foundation of Korea [2011-0022295] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Reaction of 2,2-difluoro-1-tributylstannylethenyl p-toluenesulfonate (1) with bis(tributyltin) in the presence of 5 mol % Pd(PPh3)(4) and 30 equiv LiBr in THF at reflux temperature for 7 h afforded (2,2-difluoroethenylidene)bis(tributylstannane) (2) in a 70% yield. Coupling reaction of 2 with aryl iodides in the presence of 5 mol % Pd(PPh3)(4) and 5 mol % CuI in DMF at 80 degrees C for 3-4 h provided the coupled products 3 in 59-85% yields. (C) 2012 Elsevier Ltd. All rights reserved.
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