The result for wittig reaction with CH3CN solution is light yellow product and has Rf = 0,55 in petro (60:90) : ether.
Some people told me that I need to do with mechanical stirrer. Because stirring bar is weaker than mechanical stirrer. If I do with stirring bar for t-BuOk and 5-hydroxypentyl phosphonium bromide in THF soluton, this solution won't be yellow or orange colour. Because it is weak, the ylide isn't forming.
please give me some advices
I am very happy and exciting when I discussed with everybody.
thanks