PROCESS FOR PREPARING A 5-ALKEN-1-YNE COMPOUND, (6Z)-1,1-DIALKOXY-6-NONEN-2-YNE COMPOUND, (2E,6Z)-2,6-NONADIENAL AND (2E)-CIS-6,7-EPOXY-2-NONENAL, AND 1,1-DIALKOXY-6-NONEN-2-YNE COMPOUND
Hammoud,A.; Descoins,C., Bulletin de la Societe Chimique de France, 1978, vol. <II>, p. 299 - 303
作者:Hammoud,A.、Descoins,C.
DOI:——
日期:——
PROCESS FOR PREPARING A 5-ALKEN-1-YNE COMPOUND, (6Z)-1,1-DIALKOXY-6-NONEN-2-YNE COMPOUND, (2E,6Z)-2,6-NONADIENAL AND (2E)-CIS-6,7-EPOXY-2-NONENAL, AND 1,1-DIALKOXY-6-NONEN-2-YNE COMPOUND
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20200048161A1
公开(公告)日:2020-02-13
The object of the present invention is to provide a process for preparing a 5-alken-1-yne compound efficiently at low costs and a process for preparing (2E,6Z)-2,6-nonadienal by making use of the aforesaid process for preparing the 5-alken-1-yne compound.
There is provided a process for preparing a 5-alken-1-yne compound of the following formula (4): Y-Z-CR
1
═CR
2
—(CH
2
)
2
—C≡CH (4) in which Y in formula (4) represents a hydrogen atom or a hydroxyl group, the process comprising at least steps of: subjecting (i) an alkenylmagnesium halide compound prepared from a haloalkene compound of the following formula (1): Y-Z-CR
1
═CR
2
—(CH
2
)
2
-X
1
(1) and (ii) an alkyne compound of the following formula (2): X
2
=C≡C—Si(R
3
)(R
4
)(R
5
) (2) to a coupling reaction to form a silane compound of the following formula (3): Y-Z-CR
1
═CR
2
—(CH
2
)
2
—C≡C—Si(R
3
)(R
4
)(R
5
) (3); and subjecting the silane compound (3) to a desilylation reaction to form the 5-alken-1-yne compound (4).