Question

transformation could be achieved by a conrotatory ring closure followed by a dsrotatory ring opening could be done in the opposite order to achieve the same results. Draw both pathways, induding the The two step eaction conditions (thermal or light) and the intermediates, then explain which choice might be better. 12 Give the products for the following reactions. heat hv Ring closure is usually favored, so explain why, in this case, ring opening is favored. heat hv b) consider them in explaining why the ring opening is favored in this case. c) Ignore the two double bonds in the left ring for determining the stereochemistry of ring opening. However heat hv 13 Predict the products of the following reactions heat heat b) A double (2 steps) rearrangement.(Stopping after the first rearrangement would not be good.)

Answer 1

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