Problems:

1. A.  List three effective organo catalysts for the epoxidation of α,β -unsaturated aldehydes. Provide mechanism.

B.  List three effective organo catalysts for the epoxidation of α,β -unsaturated ketones. Provide mechanism.

Reference/Text Book

1.  I. Ojima, Catalytic Asymmetric Synthesis , 3 rd ed., Wiley, New Jersey, 2010.

2.  M. B. Smith, Organic Synthesis , 2 nd edition, McGraw Hill, New Delhi, 2004.