申请人:FANDRICK Daniel R.
公开号:US20110130578A1
公开(公告)日:2011-06-02
A process for stereoselective synthesis of a compound of Formula (X) or Formula (X′)
wherein:
R
1
is an aryl group substituted with one to three substituent groups,
wherein each substituent group of R
1
is independently C
1
-C
5
alkyl, C
2
-C
5
alkenyl, C
2
-C
5
alkynyl, C
1
-C
5
alkoxy, C
1
-C
5
alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, C
1
-C
5
alkoxycarbonylamino, aminosulfonyl, C
1
-C
5
alkylaminosulfonyl, C
1
-C
5
dialkylaminosulfonyl, halogen, hydroxy, carboxy, cyano, trifluoromethyl, trifluoromethoxy, nitro, or C
1
-C
5
alkylthio wherein the sulfur atom is oxidized to sulfoxide or sulfone, and
R
2
and R
3
are each independently hydrogen or C
1
-C
5
alkyl.
一种立体选择性合成化合物(X)或化合物(X')的方法,其中:
R1是芳基基团,带有一到三个取代基,其中R1的每个取代基独立地为C1-C5烷基,C2-C5烯基,C2-C5炔基,C1-C5烷氧基,C1-C5烷氧羰基,氨基羰基,烷基氨基羰基,二烷基氨基羰基,C1-C5烷氧羰基氨基,氨基磺酰基,C1-C5烷基氨基磺酰基,C1-C5二烷基氨基磺酰基,卤素,羟基,羧基,氰基,三氟甲基,三氟甲氧基,硝基或C1-C5烷基硫基,其中硫原子被氧化为亚砜或砜,而R2和R3分别独立地为氢或C1-C5烷基。