Question

1. Synthetic organic chemists have established clever ways for probing the mechanisms of chemical reactions. In general, a preference for anti- periplanar elimination is observed; however, under some conditions the syn-periplanar elimination product can be observed. How do chemists tell the difference between anti-and syn-periplanar eliminations? Let's find out! The reaction of the substrate below under E2 conditions (NaOEt in ethanol) will give different products by syn- and anti- elimination mechanisms. By analyzing the distribution of the products, organic chemists were able to evaluate the extent of syn-elimination in this system. Studies like this allow us to state with confidence that elimination proceeds through a stereospecific anti-periplanar process. But how exactly? This question is meant to address the logic behind such a mechanistic study.

Answer 1

Toto Nuort Naoel Anti periplanar conformations are staggered conformations :. more stable Cless onergy):. major products from anti diminations OTS गे sxn periplanar conformations : not conformations les stable formed. are (more eclipsed energy