appropriate dinaphtho-azepine. When reacted with [Rh(1,5-cyclooctadiene)2]BF4, highly active catalysts for the hydrogenation of α-dehydroamino acid esters were obtained. The highest enantioselectivities (up to 99 % ee) were achieved with the phosphoramidites having two chiral binaphthyl groups with opposite configurations. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
4-4,5-dihydro-3H-dinaphtho[2,1-c:1',2'-e]azepin-4-yl}dinaphtho[2,1-d:1',2'的所有四种立体异构体-f][1,3,2]dioxaphosphepine 由 (R 或 S)-1,1'-binaphthyl-2,2'-diyl chlorophosphite 和适当的 dinaphtho-azepine 制备。当与[Rh(
1,5-环辛二烯)2]BF4反应时,得到了用于α-脱氢
氨基酸酯加氢的高活性催化剂。使用具有两个相反构型的手性联
萘基团的亚
磷酰胺实现了最高的对映选择性(高达 99% ee)。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)