um complexes [Ru(η5-1-CO2R*-2-Me-4-R1C5H2)(η6-C6H6)][X] (4 and 8) (R* = (l)- or (d)-menthyl; R1 = Me, Ph, t-Bu, 2-Naphthyl, or 4-BrC6H4; X = PF6 or BPh4) were synthesized in a diastereomerically pure form. The absolute configuration of 8b and 4c (R1 = Ph, t-Bu) were determined by an X-ray crystallographic analysis and those of the others were assigned on the basis of their optical properties including
平面手性
环戊二烯基
钌配合物 [Ru(η5-1-CO2R*-2-Me-4-R1C5H2)(η6-
C6H6)][X] (4 和 8) (R* = (l)- 或 (d)-薄荷基;R1 = Me、Ph、t-Bu、2-
萘基或 4-BrC6H4;X = PF6 或 BPh4) 以非对映异构纯形式合成。8b 和 4c (R1 = Ph, t-Bu) 的绝对构型是通过 X 射线晶体学分析确定的,而其他的则根据它们的光学特性(包括它们的 CD 光谱)进行分配。对映体纯复合物 (SC1)-[Ru(η5-1-CONHBut-2-Me-4-R1C5H2)(η6- )][PF6] 9 和 -[Ru(η5-1-CONHBut-2-Me-4- R1C5H2)(η6- )][BPh4]10 和 (RC1)-9 和 -10 由非对映体配合物的直接
水解制备,然后是胺的反应。9e 中
溴基团的置换反应(R1