Access to Homochiral Acyclic (diene)Fe(CO)3 Complexes Containing Electron Donor Substituents
作者:James A. S. Howell、Andrew G. Bell、Paula J. O'Leary、Patrick McArdle、Desmond Cunningham、G. Richard Stephenson、Michelle Hastings
DOI:10.1021/om00017a043
日期:1994.5
(2,4-pentadienal)Fe(CO)3 complexes containing electron donor 5-substituents (OMe, OCOR, NR2) have been prepared and resolved via oxazolidine or imine derivatives or through incorporation of a homochiral dialkylamino auxiliary. Absolute configurations have been established by X-ray crystallography. Crystal data: (10) orthorhombic, space group P2(1)2(1)2(1), a = 6.607(2) angstrom, b = 10.459(2) angstrom, c = 15.411(3) angstrom, Z = 4, R1 = 0.0920 for 138 parameters and 1787 observed reflections: (11) monoclinic, space group P2(1)/a, a = 7.1237(7) angstrom, b = 20.257(2) angstrom, c = 8.1669(8) angstrom, beta = 96.73(1)-degrees, Z = 4, R1 = 0.0367 for 184 parameters and 3211 observed reflections; (14a) orthorhombic, space group P2(1)2(1)2(1), a = 8.6105(8) angstrom, b = 9.5644(8) angstrom, c = 29.271(3) angstrom, Z = 4, R1 = 0.0423 for 300 parameters and 4497 observed reflections; (15b) orthorhombic, space group P2(1)2(1)2(1), a = 6.7400(9) angstrom, b = 12.526(3) angstrom, c = 24.254(4) angstrom, Z = 4, R1 = 0.0454 for 246 parameters and 3387 observed reflections.
(2,4-戊二烯醛)Fe(CO)3配合物,其中包含5位供电子基团(如OMe、OCOR、NR2),已经通过恶唑烷或亚胺衍生物,或者通过引入一种手性双烷基氨基辅助剂来制备和分离。绝对构型已通过X射线晶体学确立。晶体数据如下:
(10)斜方晶系,空间群P2(1)2(1)2(1),a = 6.607(2) 埃,b = 10.459(2) 埃,c = 15.411(3) 埃,Z = 4,R1 = 0.0920(138 个参数,1787 个观测反射);
(11)单斜晶系,空间群P2(1)/a,a = 7.1237(7) 埃,b = 20.257(2) 埃,c = 8.1669(8) 埃,β = 96.73(1)°,Z = 4,R1 = 0.0367(184 个参数,3211 个观测反射);
(14a)斜方晶系,空间群P2(1)2(1)2(1),a = 8.6105(8) 埃,b = 9.5644(8) 埃,c = 29.271(3) 埃,Z = 4,R1 = 0.0423(300 个参数,4497 个观测反射);
(15b)斜方晶系,空间群P2(1)2(1)2(1),a = 6.7400(9) 埃,b = 12.526(3) 埃,c = 24.254(4) 埃,Z = 4,R1 = 0.0454(246 个参数,3387 个观测反射)。