Enantioselective Synthesis of <i>P</i>-Chiral (η<sup>6</sup>-Arene)ruthenium(II) Complexes Using Enantiomerically Pure Orthometalated Palladium(II) Amine Complexes
作者:Kesete Y. Ghebreyessus、Nizamettin Gül、John H. Nelson
DOI:10.1021/om030172f
日期:2003.7.1
using chiral organopalladium(II) complexes containing orthopalladated (S)-1-α-(dimethylamino)ethylbenzene, (R)-1-α-(dimethylamino)ethylnaphthalene, or (S)-2-α-(dimethylamino)ethylnaphthalene as the reaction templates. Treatment of the diphosphine complexes with concentrated hydrochloric acid removed the chiral amine auxiliaries from the templates to give chelated dichloropalladium complexes. Then the
对映体纯的,刚性的二膦[2-(二环己基膦基)-5,6-二甲基-7-苯基-7-磷双环[2.2.1]庚-5-烯,[2-(二苯基膦基)-5,6-二甲基- 7-苯基-7-磷双环[2.2.1]庚-5-烯和酰胺基膦[2-(N,N-二甲基酰胺基)-5,6-二甲基-7-苯基-7-磷双环[2.2.1]通过使用二环己基乙烯基膦(DCVP),二苯基乙烯基膦(DPVP),N,N-二甲基丙烯酰胺(DMAA)和3,4-二甲基-1-苯基磷脂(DMPP)之间的不对称Diels-Alder反应有效地制备了庚5-烯含有邻钯(S)-1-α-(二甲基氨基)乙苯,(R)-1-α-(二甲基氨基)乙基萘或(S)-2-α-(二甲基氨基)乙基萘为反应模板。用浓盐酸处理二膦配合物,从模板上除去手性胺助剂,得到螯合的二氯钯配合物。然后将配体从与氰化物氯化钯络合物移位并与[(η 6 -1,3,5--ME 3 Ç 6 ħ 3)Ru)的氯2 ] 2中的AgCF存在3