Axially Asymmetric Phosphorus Compound and Production Method Thereof
申请人:Tanaka Ken
公开号:US20090227805A1
公开(公告)日:2009-09-10
Problem to be Solved: To provide an axially asymmetric optically active biarylphosphorus compound that can easily produced without the step of optical resolution which was almost indispensable in conventional methods.
Solution: A method for producing an axially asymmetric phosphorus compound represented by the general formula (1), comprising a cycloaddition reaction of a compound having a triple bond with the use of a catalyst containing rhodium metal and an optically active bisphosphine.
(In the formula, J is an oxygen atom, a sulfur atom or BH
3
; R
1
and R
2
independently are an alkyl, cycloalkyl, aryl, alkoxy and aryloxy group; a1 and a2 independently are 0 or 1; R
3
to R
10
independently are an alkyl, cycloalkyl, aryl, alkoxy and aryloxy group; two among R
3
to R
10
may form a ring;
and * is axial asymmetry.)
The aim of the present invention is to provide a method capable of producing an optically active pyrimidinamide derivative on an industrial scale.
Compound (I) or a salt thereof is subjected to an asymmetric reduction reaction, the obtained compound (II) or a salt thereof is subjected to a deprotection reaction, and the obtained compound (III) or a salt thereof is reacted with compound (VI) or a salt thereof to obtain compound (V) or a salt thereof.
wherein each symbol is as defined in the specification.
A process for producing an optically active amine compound, characterized by asymmetrically hydrogenating a prochiral carbon-nitrogen double bond in the presence of a ruthenium complex represented by general formula (1) or (2) (wherein P
represents an optically active diphosphine, X represents an anionic group, and Ar represents an optionally substituted arylene group).
Axially asymmetric ester compound and production method thereof
申请人:Tanaka Ken
公开号:US20090299076A1
公开(公告)日:2009-12-03
To provide an axially asymmetric optically active biaryl ester compound that can easily produced without the step of optical resolution which was almost indispensable in conventional methods. There is provided a method for producing an axially asymmetric ester compound, comprising a cycloaddition of a compound having a triple bond with the use of a catalyst containing rhodium metal and an optically active bisphosphine.
Process for producing an alcohol or a silyl ether thereof
申请人:Shibasaki Masakatsu
公开号:US20060199973A1
公开(公告)日:2006-09-07
A process for producing an alcohol or a silyl ether thereof of formula (4):
wherein R
1
represents a hydrocarbon, a heterocyclic, or an alkoxycarbonyl group; R
2
represents hydrogen or CO
2
R; X represents an aryl or an alkenyl group of formula (3):
and R
8
represents hydrogen or a silyl residue, by reacting a compound R
1
(C═O)R
2
with a silane (R
3
)
2
R
4
Si—X, wherein R
3
and R
4
each represents an alkyl, an alkoxy, or an aryl group; in the presence of (i) a catalyst component containing copper fluoride or a catalyst component containing a copper compound and a fluoride and (ii) a bidentate phosphine compound or in the presence of a complex obtained from the foregoing components.