(R)-2-amino-1,1-di(2-n-butoxy-5-t-butylphenyl)-1-propanol 、 水杨醛 以
乙醇 、 甲苯 为溶剂,
反应 1.0h,
以to obtain 1.17 g of (R)-N-salicyliden-2-amino-1,1-di(2-butoxy-5-t-butylphenyl)-propanol as a yellow solid的产率得到(R)-N-salicyliden-2-amino-1,1-di(2-butoxy-5-t-butylphenyl)-propanol
参考文献:
名称:
Chiral copper complex catalyst composition and asymmetric production process using the same
Highly efficient chiral copper Schiff-base catalyst for asymmetric cyclopropanation of 2,5-dimethyl-2,4-hexadiene
摘要:
A remarkable increase in catalytic activity is found for the asymmetric cyclopropanation of 2,5-dimethyl-2,4-hexadiene with diazoacetate by use of the chiral copper Schiff-base complexes, which are derived from substituted salicylaldehydes, chiral aminoalcohols, and copper acetate monohydrate. Furthermore, a combination of a chiral copper Schiff-base with a Lewis acid showed an increase in yield (up to 90%) and in enantioselectivity (up to 90% ee) for the asymmetric cyclopropanation of the diene with t-butyl diazoacetate at 20degreesC. (C) 2004 Elsevier Ltd. All rights reserved.
Practical Copper-Catalyzed Asymmetric Synthesis of Chiral Chrysanthemic Acid Esters
作者:Makoto Itagaki、Katsuhiro Suenobu
DOI:10.1021/op060238t
日期:2007.5.1
Practical copper salicylaldimine complex catalysts have been developed for the asymmetric synthesis of chiral chrysanthemicacid esters by the cyclopropanation reaction of 2,5-dimethyl-2,4-hexadiene with tert-butyl diazoacetate. First, the effects of the substituents on the salicylaldehyde moiety in the copper salicylaldimine complex (copper Schiff base complex) on the catalytic activity and the stereoselectivities
Chiral copper complex and production processes thereof and using the same
申请人:Kamitamari Masashi
公开号:US20050090684A1
公开(公告)日:2005-04-28
There is disclosed an optically active salicylideneaminoalcohol compound of formula (1):
wherein R
1
represents an alkyl group or the like, R
2
represents
an aryl group and the like, and
when X
1
represents a nitro, X
2
is a hydrogen atom,
when X
1
represents a chlorine atom, X
2
is a chlorine atom, and
when X
1
is a hydrogen atom, X
2
is a fluorine atom; and the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration, and a chiral copper complex produced from the optically active salicylidenaminoalcohol compound and a copper compound.