11-HALO-3-UNDECENE COMPOUND AND A PROCESS FOR PREPARING THE SAME AND A PROCESS FOR PREPARING 9-DODECENAL COMPOUND
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20210009489A1
公开(公告)日:2021-01-14
The present invention provides a process for preparing an 11-halo-3-undecene compound (7) in which X
1
represents a halogen atom, the process comprising a step of subjecting a nucleophilic reagent, 3-hexenyl compound (5): in which M
2
represents Li or MgZ
2
, wherein Z
2
represents a halogen atom or a 3-hexenyl group, to a coupling reaction with a 1-halo-5-halopentane compound (6) in which X
3
and X
4
may be same with or different from each other and represent a halogen atom, to produce the 11-halo-3-undecene compound (7). The present invention also provides a process for preparing a 9-dodecenal compound (4): the process comprising a step of subjecting a nucleophilic reagent, 8-undecenyl compound (1) in which M
1
represents Li or MgZ
1
, wherein Z
1
represents a halogen atom or an 8-undecenyl group, and an orthoformic ester compound (2) in which R may be same with or different from each other and represents an alkyl group having 1 to 6 carbon atoms, to a nucleophilic substitution reaction to produce a 1,1-dialkoxy-9-dodecene compound (3) in which R are as defined above; and hydrolyzing the 1,1-dialkoxy-9-dodecene compound (3) thus obtained to produce the 9-dodecenal compound (4).
本发明提供了一种制备11-卤代-3-十一烯化合物(7)的方法,其中X1代表卤素原子,该方法包括以下步骤:将亲核试剂、3-己烯基化合物(5):其中M2代表Li或MgZ2,Z2代表卤素原子或3-己烯基团,与1-卤代-5-卤代戊烷化合物(6)进行偶联反应,其中X3和X4可以相同也可以不同,并且代表卤素原子,以生成11-卤代-3-十一烯化合物(7)。本发明还提供了一种制备9-十二烯醛化合物(4)的方法:该方法包括以下步骤:将亲核试剂、8-十一烯基化合物(1):其中M1代表Li或MgZ1,Z1代表卤素原子或8-十一烯基团,以及醛甲酸酯化合物(2):其中R可以相同也可以不同,并且代表具有1至6个碳原子的烷基团,进行亲核取代反应,以生成1,1-二烷氧基-9-十二烯化合物(3):其中R如上定义;并水解所得的1,1-二烷氧基-9-十二烯化合物(3),以生成9-十二烯醛化合物(4)。