Synthetic analogs for evaluating the influence of N–H⋯S hydrogen bonds on the formation of thioester in acetyl coenzyme a synthase
作者:Piyal W. G. Ariyananda、Matthew T. Kieber-Emmons、Glenn P. A. Yap、Charles G. Riordan
DOI:10.1039/b901192g
日期:——
(dRpe)Ni(CO)(2) and MeC(O)SAr via the intermediacy of the acylnickel adducts, (dRpe)Ni(C(O)Me)(SAr), detected at low temperature by (31)P NMR spectroscopy. Consistent with experimental observations, density functional theory results reveal that the intramolecular hydrogen bond in 9 stabilizes the acylnickel adduct compared with its non-hydrogen-bonded adduct, 10. Oxidative addition of MeC(O)SC(6)F(5) to (dRpe)Ni(COD)
一系列方形平面甲基镍(II)配合物,(dppe)Ni(Me)(SAr)(dppe = 1,2-双(二苯基膦)乙烷);2. Ar = 苯基;3. Ar = 五氟苯基;4. Ar = 邻新戊酰氨基苯基;5. Ar = 对新戊酰氨基苯基;(depe)Ni(Me)(SAr),(depe = 1,2-双(二乙基膦)乙烷);7. Ar = 苯基;8. Ar = 五氟苯基;9. Ar = 邻新戊酰氨基苯基;10. Ar = p-新戊酰氨基苯基),通过 (dppe)NiMe(2) (1) 和 (depe)NiMe(2) (6) 与相应的硫醇或二硫化物反应合成。这些配合物通过各种光谱方法进行表征,包括 (31) P NMR、(1) H NMR、(13) C NMR 和红外光谱,并且在大多数情况下通过 X 射线衍射分析。固态和溶液测量确定 4 和 9 包含分子内 NH...S 键。配合物 2-4 的羰基化,7-10