Metallacrown ethers with a symmetric bis(phosphite) ligand derived from 1,2-bis-(2-hydroxyethoxy)benzene: Synthesis, characterization and hydroformylation of styrene
作者:Abha A. Kaisare、Samuel B. Owens、Edward J. Valente、Gary M. Gray
DOI:10.1016/j.jorganchem.2010.08.010
日期:2010.11
to the amount of the LiBPh4·3dme added with the activity decreasing by 16% and the regioselectivity for the iso increasing by 9% at a 8:1 LiBPh4:Rh ratio. Model complexes for the octahedral, cis-Mo(CO)4(1), 2, and square planar, cis-PtCl2(1), 3, and cis-PdCl2(1), 4, complexes in the catalytic cycle has been have been studied using multinuclear NMR spectroscopy and X-ray crystallography. Although the
为了更好地理解配体构型对在LiBPh 4 ·3dme(dme = 1,2-二甲氧基乙烷)存在下进行的加氢甲酰化反应的影响,LiBPh 4 ·3dme是由1,2-双-(2-制备了羟基乙氧基)苯[((2,2'-O 2 C 12 H 8)P(C 2 H 4 O 2)] 2 C 6 H 4 },1,其Rh(I)金属lac醚络合物已被评估为苯乙烯加氢甲酰化的催化剂。催化剂的活性和区域选择性均对LiBPh 4的量敏感·以8:1 LiBPh 4:Rh的比率加入的3dme的活性降低16%,iso的区域选择性提高9%。 模型络合物为八面体,顺式-Mo(CO)4(1),2,和平面正方形,顺式-氯铂酸2(1),3,和顺式的PdCl 2(1),4,在催化循环络合物具有已经使用多核NMR光谱法和X射线晶体学研究了N.O。虽然X射线晶体结构2表明metallacrown醚环可采取能够结合碱金属阳离子的结构,这并不出现在二氯甲烷-发生d