PROCESS FOR PREPARING A FORMYLALKENYL ALKOXYMETHYL ETHER COMPOUND AND PROCESSES FOR PREPARING CONJUGATED DIENE COMPOUNDS FROM THE SAME
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20210300854A1
公开(公告)日:2021-09-30
The present invention provide for preparing a formylalkenyl alkoxymethyl ether compound of the following general formula (2): R
3
CH
2
OCH
2
O(CH
2
)
a
CH═CHCHO (2), wherein R
3
represents a hydrogen atom, an n-alkyl group having 1 to 9 carbon atoms, or a phenyl group; and “a” represents an integer of 1 to 10, the process comprising: hydrolyzing a dialkoxyalkenyl alkoxymethyl ether compound of the following general formula (1): R
3
CH
2
OCH
2
O(CH
2
)
a
CH═CHCH(OR
1
)(OR
2
) (1), wherein R
1
and R
2
represent, independently of each other, a monovalent hydrocarbon group having 1 to 15 carbon atoms, or R
1
and R
2
may form together a divalent hydrocarbon group, R
1
-R
2
, having 2 to 10 carbon atoms; and R
3
and “a” are as defined above, in the presence of an acid while removing an alcohol compound thus generated to form the formylalkenyl alkoxymethyl ether compound (2).
本发明提供一种制备下述一般式(2)的甲醛烯基烷氧甲基醚化合物的方法:R3CH2OCH2O(CH2)aCH═CHCHO(2),其中R3代表氢原子,具有1至9个碳原子的n-烷基或苯基;“a”代表1至10的整数。该过程包括:在酸的存在下水解下述一般式(1)的二烷氧基烯基烷氧甲基醚化合物:R3CH2OCH2O(CH2)aCH═CHCH(OR1)(OR2)(1),其中R1和R2分别独立地代表具有1至15个碳原子的单价碳氢基团,或R1和R2可形成具有2至10个碳原子的二价碳氢基团R1-R2;而R3和“a”如上所定义,同时去除生成的醇化合物以形成甲醛烯基烷氧甲基醚化合物(2)。