Exhibit 30-9
Vitamin D 3 ,cholecalciferol,is synthesized under the skin by the photochemical pericyclic process shown below.Answer the following question(s) about these reactions.
-Refer to Exhibit 30-9.The first step in this process is a(n):

Question

Exhibit 30-9
Vitamin D 3 ,cholecalciferol,is synthesized under the skin by the photochemical pericyclic process shown below.Answer the following question(s) about these reactions. 
-Refer to Exhibit 30-9.The first step in this process is a(n):

Quizplus · Accepted Answer

The process shown is a photochemical electrocyclic reaction, specifically a [1,7]-sigmatropic rearrangement.

Exhibit 30-9 Vitamin D3,cholecalciferol,is Synthesized Under the Skin by the Photochemical Pericyclic

Exhibit 30-9 Vitamin D₃,cholecalciferol,is Synthesized Under the Skin by the Photochemical Pericyclic