首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Metallkomplexe mit biologisch wichtigen Liganden, CXXI(1). Orthopalladierte Enolate aus N-(Diphenylmethylen)-schiff-Basen von #alpha#-Aminosaureestern als ambivalente 1, 3-Dipole in (2+3)-Cyclo-additionsreaktionen. Strukturen einer Reihe von Cycloadd
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Metallkomplexe mit biologisch wichtigen Liganden, CXXI(1). Orthopalladierte Enolate aus N-(Diphenylmethylen)-schiff-Basen von #alpha#-Aminosaureestern als ambivalente 1, 3-Dipole in (2+3)-Cyclo-additionsreaktionen. Strukturen einer Reihe von Cycloadd

机译:具有重要生物配体的金属配合物CXXI(1)。在(2 + 3)环加成反应中,由#α-氨基酸酯的N-(二苯基亚甲基)-船碱作为邻位的1,3-偶极子进行邻位钯烯醇化。多个cycloadd的结构

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摘要

Enolates of ortho-palladated N-(diphenylmethylene) Schiff bases from glycine esters (R_3P) Pd [(C_6H_4)(C_6H_5)C=N-C(R')=CO_2R] were isolated and have been shown to be ambivalent 1, 3-dipoles in [2+3] cycloadditions. Tetracyanoethene, dimethyl acetylene dicarboxylate, dimethyl azodicarboxylate, thiobenzophenone, thione-S, 4-phenyl-1, 2, 4-triazoline-3, 5-dione, diphenyl-ketene and phenylisocyanate are added at the palladium and the enolate (#alpha#-C) carbon atoms, whereas methyl propiolate, methyl acrylate, and the methyl esters of maleic and fumaric acid form [2+3] cycloadducts with the #alpha#-carbon and the imino carbon atoms of the enolates under mild conditions. The structures of seven cycloadducts were determined by X-ray diffraction analyses.
机译:分离自甘氨酸酯(R_3P)Pd [(C_6H_4)(C_6H_5)C = NC(R')= CO_2R]的邻味的N-(二苯基亚甲基)Schiff碱的烯醇化物,已证明它们是矛盾的1,3,偶极子在[2 + 3]个环加法中。在钯和烯醇盐(#alpha# -C)碳原子,而丙炔酸甲酯,丙烯酸甲酯和马来酸和富马酸甲酯则在温和条件下与烯醇化物的#alpha#-碳和亚氨基碳原子形成[2 + 3]环加合物。通过X射线衍射分析确定了七个环加合物的结构。

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