The present invention relates to a method of producing an optically active cyanohydrin derivative, which comprises reacting an aldehyde or an asymmetrical ketone with a cyanating agent in the presence of a Lewis base and a titanium compound produced from a partial hydrolysate of titanium tetraalkoxide and an optically active ligand represented by formula (II) or a titanium oxoalkoxide compound represented by formula (I) [Ti
x
O
y
](OR
1
)
4x-2y
, and an optically active ligand represented by formula (II), wherein R
1
is an optionally substituted alkyl group or an optionally substituted aryl group; x is an integer of not less than 2; y is an integer of not less than 1; and y/x satisfies 0.1
本发明涉及一种制备光学活性氰醇衍生物的方法,包括在Lewis碱和由钛四烷氧化物的部分水解物和式(I)[TixOy](OR1)4x-2y,以及由式(II)表示的光学活性配体组成的钛氧烷衍生物的存在下,将醛或不对称酮与氰化试剂反应。其中,R1是可选的取代基的烷基或芳基;x为不小于2的整数;y为不小于1的整数;且y/x满足0.1
An Asymmetric Cyanation Reaction and Sequential Asymmetric Cyanation–Nitroaldol Reaction Using a [YLi3{tris(binaphthoxide)}] Single Catalyst Component: Catalyst Tuning with Achiral Additives
作者:Jun Tian、Noriyuki Yamagiwa、Shigeki Matsunaga、Masakatsu Shibasaki
DOI:10.1002/1521-3773(20021004)41:19<3636::aid-anie3636>3.0.co;2-b
日期:2002.10.4
WO2008/121074
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