Achiral and chiral NNN-pincer nickel complexes with oxazolinyl backbones: application in transfer hydrogenation of ketones
作者:Rahul A. Jagtap、Shidheshwar B. Ankade、Rajesh G. Gonnade、Benudhar Punji
DOI:10.1039/d1nj01698a
日期:——
NNN-oxazolinyl-pincer nickel complexes and their application in the transfer hydrogenation of ketones. Achiral NNN-ligands, R′2-oxazolinyl-2-C6H4-NH-C(O)CH2NEt2 [(R′2-OxNNNEt2)–H; R’ = H (3a), R′ = Me (3b)], and chiral ligands, (R)-R′-oxazolinyl-2-C6H4-NH-C(O)CH2NEt2 [(R)-(R′-OxNNNEt2)–H; R′ = Ph (3c), R′ = CH2Ph (3d), R′ = iPr (3e), R′ = CH2iPr (3f)], were efficiently synthesized. Treatment of these ligands with (DME)NiCl2
我们描述了新的 NNN-恶唑啉基-钳状镍配合物的合成及其在酮转移氢化中的应用。非手性 NNN-配体,R' 2 -恶唑啉基-2-C 6 H 4 -NH-C(O)CH 2 NEt 2 [( R'2-Ox NNN Et2 )–H; R' = H ( 3a ), R' = Me ( 3b )], 和手性配体, ( R )-R'-恶唑啉基-2-C 6 H 4 -NH-C(O)CH 2 NEt 2 [( R )-( R'-Ox NNN Et2 )-H; R' = Ph ( 3c ), R' = CH 2 Ph (3d ), R' = i Pr ( 3e ), R' = CH 2 i Pr ( 3f )],被有效地合成。用 (DME)NiCl 2处理这些配体得到所需的酰胺-钳状镍配合物,( R'2-Ox NNN Et2 )NiCl [R' = H ( 4a ), R' = Me ( 4b )] 和 ( R'