申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20200062682A1
公开(公告)日:2020-02-27
The object of the present invention is to provide an industrial and economical process for preparing (E2,Z6)-2,6-nonadienal of the following formula (4):
The present invention provides a process for preparing (E2,Z6)-2,6-nonadienal (4), comprising at least steps of:
subjecting (Z3,Z6)-3,6-nonadien-1-ol of the following formula (1):
to oxidation with a sulfoxide compound of the following formula (2):
CH
3
(R′)S═O (
2
)
in which R
1
represents a monovalent hydrocarbon group having from 1 to 12 carbon atoms,
in the presence of a sulfur trioxide complex and an amine compound of the following formula (3):
N(R
2
)(R
3
)(R
4
) (
3
)
in which R
2
, R
3
, and R
4
each independently represent a monovalent hydrocarbon group having from 1 to 12 carbon atoms, or R
3
and R
4
may be bonded to each other to form a divalent hydrocarbon group having from 3 to 12 carbon atoms, R
3
-R
4
,
to form the aforesaid (E2,Z6)-2,6-nonadienal (4).
本发明的目的是提供一种工业和经济的过程,用于制备以下式(4)中的(E2,Z6)-2,6-壬二醛:
本发明提供了一种制备(E2,Z6)-2,6-壬二醛(4)的过程,包括至少以下步骤:将以下式(1)的(Z3,Z6)-3,6-壬二烯-1-醇:
进行氧化,与以下式(2)的亚砜化合物一起:
CH3(R′)S═O (2)
其中R1代表具有1到12个碳原子的一价碳氢基团,在硫三氧化物复合物和以下式(3)的胺化合物的存在下进行:
N(R2)(R3)(R4) (3)
其中R2、R3和R4各自独立地代表具有1到12个碳原子的一价碳氢基团,或R3和R4可以相互连接形成具有3到12个碳原子的二价碳氢基团,R3-R4,形成上述的(E2,Z6)-2,6-壬二醛(4)。