Multiple Choice
Which of the following best explains the rearrangement when provitamin D3 rearranges to vitamin D3? ![Which of the following best explains the rearrangement when provitamin D<sub>3</sub> rearranges to vitamin D<sub>3</sub>? A) [1,7] cycloaddition rearrangement,antarafacial B) [1,7] cycloaddition rearrangement,suprafacial C) [1,7] sigmatropic rearrangement,antarafacial D) [1,7] sigmatropic rearrangement,suprafacial E) [1,7] electrocyclic reaction,suprafacial](https://d2lvgg3v3hfg70.cloudfront.net/TB1831/11ea8a1c_2dc6_4f97_b657_a754f0480875_TB1831_00.jpg)
A) [1,7] cycloaddition rearrangement,antarafacial
B) [1,7] cycloaddition rearrangement,suprafacial
C) [1,7] sigmatropic rearrangement,antarafacial
D) [1,7] sigmatropic rearrangement,suprafacial
E) [1,7] electrocyclic reaction,suprafacial
Correct Answer:
Verified
Correct Answer:
Verified
Q70: What does LCAO stand for?
Q71: Fill in the empty boxes. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB1831/.jpg"
Q72: Give the product for the following reaction.
Q73: Under thermal conditions,(2E,4Z)-hexadiene undergoes a _ ring
Q74: What is the product of the following
Q76: What type of pericyclic process is occurring
Q77: Which of the following statements best describes
Q78: Describe a Claisen rearrangement.<br>A)[3,3] sigmatropic rearrangement of
Q79: Describe a cycloaddition reaction.<br>A)The reactant has lost
Q80: Which molecular orbital is higher in energy: