申请人:Council of Scientific & Industrial Research
公开号:US05864046A1
公开(公告)日:1999-01-26
Described herein is a process for the preparation of 9 (2-hydroxyethyl)-7, 11-dioxaspiro (5,5) undecane by reacting Cis-but-2-2ene-1,4 diol with cyclohexanone in the presence of a heterogeneous sulphonated nitro coal acid catalyst to obtain 7, 12-dioxaspiro (5,6) dodec-9-ene which is reacted with syngas in the presence of a catalyst, namely RhH (CO) (TPP).sub.3, to obtain 9-formyl-7, 12-dioxaspiro (5,6) dodecane which is reduced and the reduced product is rearranged to yield 9-(2-hydroxyethyl)-7,11-dioxaspiro \x9b5,5! undecane.
本文描述了一种制备9(2-羟乙基)-7,11-二氧杂螺(5,5)十一烷的过程,通过在异相磺化硝基煤酸催化剂存在下将顺-2-2烯-1,4-二醇与环己酮反应,得到7,12-二氧杂螺(5,6)十二烯,然后在催化剂RhH(CO)(TPP).sub.3存在下,将其与合成气反应,得到9-甲酰基-7,12-二氧杂螺(5,6)十二烷,然后还原该产物并将还原产物重排,得到9-(2-羟乙基)-7,11-二氧杂螺(5,5)十一烷。