Question

Draw the complete electron pushing arrow mechanism to show the formation of the final product shown. Explain every step of your mechanism. Explain why this is a product favored reaction.

но*

Answer 1

Given reaction ; НО D04 (2 Explanation: he first step, the OH-group of (1) cway protonated by Hot to produce the intermediate (I). By the next step, elimination of Ho molecule takes place from (I) to produce the intermediate ). ③ By the third step, ring enlargement takep place to Produce the intermediate (1) 6 by the final step, elimination of it takes place from the highly substituted carbon atom to produce the highly substituted stable product (1) "Explanation for why only the favored product (I was formed; from the intermediate (!), the following reaction ý also possible. But compared to the five membered ring compounds, the four membered ring compounds are less stable due to bond angle strain (Bayer strain theory) from the intermediate (Iy, the following reaction y also possible. But compared to the product (5) with double bond inside the ring Chighly substituted compound), the product (2) in the following rean with dou energetic double boud in lege stude and have thing not food Cut told away from meltyl group ý not favored Cine. legs substituted product).