申请人:SUMITOMO CHEMICAL CO., LTD.
公开号:US20020032346A1
公开(公告)日:2002-03-14
There is disclosed an advantageous mixed acid anhydride production method of formula (1):
R
1
C(O)OY(O)
n
(R
2
)
p
(1)
wherein R
1
, R
2
and Y denote the same as defined below, n and p denote an integer of 1 or 2, which is characterized by adding a carboxylic acid of formula (2);
R
1
COOH (2)
wherein R
1
denotes a hydrogen atom, an optionally substituted alkyl group or the like, an organic base to a solution of a carboxylic acid activating agent of formula (3);
(R
2
)
p
Y(O)
n
X (3)
wherein R
2
denotes an optionally substituted aliphatic hydrocarbyl group or the like, Y denotes a carbon atom, a phosphorus atom, or a sulfur atom, and X denotes a chlorine atom or the like.
公开了一种有利的混合酸酐生产方法,其化学式为(1):R1C(O)OY(O)n(R2)p(1)其中R1、R2和Y的定义如下,n和p表示为1或2的整数,其特征在于向化学式(2)的羧酸中加入一个羧酸活化剂的有机碱;R1COOH(2)其中R1表示氢原子、可选择取代的烷基或类似物,有机碱加入到化学式(3)的羧酸活化剂溶液中;(R2)pY(O)nX(3)其中R2表示可选择取代的脂肪烃基或类似物,Y表示碳原子、磷原子或硫原子,X表示氯原子或类似物。