Mono- and Dinuclear Pincer Nickel Catalyzed Activation and Transformation of C-Cl, C-N, and C-O Bonds
Mono- and Dinuclear Pincer Nickel Catalyzed Activation and Transformation of C-Cl, C-N, and C-O Bonds
复制标题
单核和双核钳镍催化 C-Cl、C-N 和 C-O 键的活化和转化
DOI：
10.1021/om500452c
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发表时间：
2014
期刊：
影响因子：
2.8
通讯作者：
Wang Zhong-Xia
中科院分区：
文献类型：
--
作者：
Yang Xia;Wang Zhong-Xia
Condensation of 2-NH2C6H4P(Et)Ph (2) with pyrrole-2-carboxaldehyde generated 2-(C4H4N-2′-CHN)C6H4P(Et)Ph (3). Treatment of3with NaH and followed by (DME)NiX2(X = Cl, Br) afforded mononuclear pincer nickel complexes [Ni{2-(C4H3N-2′-CHN)C6H4P(Et)Ph}X] (4a, X = Cl;4b, X = Br). Reaction of [2-NH2C6H4P(Ph)]2(CH2)n(5a,n= 3;5b,n= 4) with pyrrole-2-carboxaldehyde or 5-tert-butyl-1H-pyrrole-2-carbaldehyde formed [2-(C4H4N-2′-CHN)C6H4P(Ph)]2(CH2)n(6a,n= 3;6b,n= 4) and [2-(5′-tBuC4H3N-2′-CHN)C6H4P(Ph)]2(CH2)4(6c). Respective treatment of6a–cwith NaH followed by (DME)NiX2(X = Cl, Br) gave the dinuclear nickel complexes [Ni{2-(5′-RC4H2N-2′-CHN)C6H4P(Ph)}X]2(CH2)n(7a, R = H, X = Cl,n= 3;7b, R = H, X = Cl,n= 4;7c, R = H, X = Br,n= 4;7d, R =tBu, X = Cl,n= 4). Catalysis of the complexes for the activation and transformation of C–Cl, C–N, and C–O bonds was evaluated. Complex7cexhibited excellent catalytic activity in the cross-coupling of aryl chlorides or aryltrimethylammonium iodides with arylzinc reagents as well as of aryl sulfamates with aryl Grignard reagents. The dinuclear nickel complexes7b–dshowed higher catalytic activity than the mononuclear complexes in each type of reaction.
