申请人:——
公开号:US20020058829A1
公开(公告)日:2002-05-16
A method for making a vinyl carbonate represented by the formula (I):
CH
2
═CHOC(O)X
1
R
1
(I)
wherein X
1
is oxygen or sulfur and R
1
is a substituted or an unsubstituted aliphatic alkyl, aryl, aryl alkyl, olefinic, vinyl, or cycloaliphatic group comprises:
(a) reacting a compound represented by the formula (II):
X
2
C(O)X
1
R
1
(II)
wherein X
2
is a halogen other than fluorine, with a compound represented by the formula (III):
M
1
—F (III)
wherein M
1
is selected from a Group IA metal, in the presence of a first phase transfer catalyst and a first organic solvent, to form a compound represented by the formula (IV):
FC(O)X
1
R
1
(IV)
;and
(b) reacting a compound represented by the formula (IV) with a compound represented by the formula (V):
CH
2
═CHOSi(R
2
)
3
(V)
wherein R
2
is a substituted or an unsubstituted aliphatic alkyl, aryl, aryl alkyl olefinic, vinyl, or cycloaliphatic group, or any combination thereof, in the presence of a metal salt represented by the formula M
2
—F wherein M
2
is a Group IA metal, a second phase transfer catalyst, and a second organic solvent, to form the compound represented by formula (I).
一种制备式(I)的乙烯基碳酸酯的方法,其中式中X1为氧或硫,R1为取代或未取代的脂肪基烷基、芳基、芳基烷基、烯烃基、乙烯基或环脂肪基,包括以下步骤:(a)将式(II)的化合物:X2C(O)X1R1(II),其中X2为氟以外的卤素,与式(III)的化合物:M1—F(III),其中M1为IA族金属,在第一相转移催化剂和第一有机溶剂的存在下反应,形成式(IV)的化合物:FC(O)X1R1(IV);(b)将式(IV)的化合物与式(V)的化合物:CH2═CHOSi(R2)3(V),其中R2为取代或未取代的脂肪基烷基、芳基、芳基烷基、烯烃基、乙烯基或环脂肪基或其任意组合,在M2—F的金属盐的存在下,M2为IA族金属,在第二相转移催化剂和第二有机溶剂的存在下反应,形成式(I)的化合物。