Ti(OiPr)4 is not so good Lewis as TiCl4, if you want to form a titanium enolate and not use TiCl4 because is too aggressive, you might consider to use TiCl(OiPr)3 or TiCl2(OiPr)2. Also you can try other Lewis acids such as BF3·Et2O or MgBr2·Et2O. Good luck!

Thanks a lot, I will consider your advise :D

hi men, first i have a question? did you try with TiCl4 on solution with DCM or THF (1M or 0.5 M for example),,,, if not, try to do it, and the other question, what kind of base are you using,? did you use DIPEA ?? 

best regards

Hi, I have not tried TiCl4 in DCM or THF, I added it directly to a solution of starting material in DCM, do you think it could reduce decomposition?

In all experiments I used TEA as base. 

Thnak you for your reply