Answer clicked by accident, not necessarily correct
Which of the following are intermediates in the base catalyzed aldol reaction of propanal to form 2-meth yl-2-pentenal? 1. enol 2. 3. 4. enolate tetrahedral carbonyl intermediate aldol only 1 and 2 O only 1, 3 and 4 Oonly 2, 3 and 4 1,2, 3 and 4