申请人:——
公开号:US20030232980A1
公开(公告)日:2003-12-18
Provided are methods of producing phosphitylated compounds, including 3′-O-phosphoramidites, comprising the step of reacting a hydroxyl-containing compound with a phosphitylating agent in the presence of a phosphitylation activator selected from the group consisting of: (1) acid-base complexes derived from an amine base of Formula I
1
wherein R, R
1
, and R
2
are independently C
1
-C
10
alkyl, C
1
-C
10
cycloalkyl, C
1
-C
10
aryl, C
1
-C
10
aralkyl, C
1
-C
10
heteroalkyl, or C
1
-C
10
heteroaryl; (2) acid-base complexes derived from an amine base of Formula II
2
wherein R
3
, R
4
, R
5
, R
6
, and R
7
are independently hydrogen, C
1
-C
10
alkyl, C
1
-C
10
cycloalkyl, C
1
-C
10
aryl, C
1
-C
10
aralkyl, C
1
-C
10
heteroalkyl, or C
1
-C
10
heteroaryl, and at least one of R
3
, R
4
, R
5
R
6
, and R
7
is not hydrogen.; (3) acid-base complexes derived from a diazabicyclo amine base; (4) zwitterionic amine complexes; and (5) combinations of two or more thereof, to produce a phosphitylated compound.
提供了生产磷酰化化合物的方法,包括3′-O-磷酰胺酯,其中包括以下步骤:在磷酰化试剂的存在下,将含羟基化合物与磷酰化活化剂反应,所述磷酰化活化剂选自以下羧基复合物组成的羧基复合物:(1)来自式I的胺碱的酸碱复合物,其中R、R1和R2独立地为C1-C10烷基、C1-C10环烷基、C1-C10芳基、C1-C10芳基烷基、C1-C10杂原子烷基或C1-C10杂原子芳基;(2)来自式II的胺碱的酸碱复合物,其中R3、R4、R5、R6和R7独立地为氢、C1-C10烷基、C1-C10环烷基、C1-C10芳基、C1-C10芳基烷基、C1-C10杂原子烷基或C1-C10杂原子芳基,且R3、R4、R5、R6和R7中至少有一个不是氢;(3)来自二氮杂双环胺碱的酸碱复合物;(4)带电离子的胺复合物;以及(5)两者或两者以上的组合物,以产生磷酰化化合物。