Exploration of tin-catalyzed phosphine dehydrocoupling: Catalyst effects and observation of tin-catalyzed hydrophosphination
Exploration of tin-catalyzed phosphine dehydrocoupling: Catalyst effects and observation of tin-catalyzed hydrophosphination
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DOI：
10.1016/j.ica.2014.07.002
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发表时间：
2014-10-01
影响因子：
2.8
通讯作者：
Waterman, Rory
中科院分区：
文献类型：
--
作者：
Erickson, Karla A.;Dixon, Lily S. H.;Waterman, Rory
探索了 Cp-2*SnCl2 (Cp* = 五甲基环戊二烯基，1) 催化的脱氢偶联反应中的膦底物范围。还测试了催化剂变体 R2SnX2（R = Cp*、Ph；X = Cl、Me、Ph），结果表明活性取决于 Cp* 配体以及吸电子性更强的 X 配体。膦底物的空间因素也很重要。化合物1被发现是苯乙烯、2,3-二甲基丁二烯和二苯乙炔与苯基膦进行氢膦酸化的催化剂，这是氢膦酸化的p-嵌段催化剂的第一个例子。 (C) 2014 Elsevier B.V. 保留所有权利。
The phosphine substrate scope in dehydrocoupling reactions catalyzed by Cp-2*SnCl2 (Cp* = pentamethylcyclopentadienyl, 1) have been explored. Catalyst variants R2SnX2 (R = Cp*, Ph; X = Cl, Me, Ph) were also tested, which revealed that activity is dependent on the Cp* ligands as well as more electron withdrawing X ligands. Steric factors at the phosphine substrate are also important. Compound 1 was found to be a catalyst for hydrophosphination of styrene, 2,3-dimethylbutadiene, and diphenylacetylene with phenylphosphine, which is the first example of a p-block catalyst for hydrophosphination. (C) 2014 Elsevier B. V. All rights reserved.