Novel Proline Based Organocatalysts for Michael Addition of 1,3-Dicarbonyls to Nitrostyrene

Shrikant Pendalwar, Avinash Chakrawar, Sudhakar Bhusare
2016 Journal of Chemical and Pharmaceutical Research   unpublished
A new class of bifunctional proline based organocatalyst was synthesized from L-proline. Excellent enantioselectivity was obtained in the Michael addition of 2,4-pentanedione to various nitro styrene using the new proline based organocatalyst. The construction of contiguous stereocenters via the Michael reaction of substituted 1,3-dicarbonyls to nitro styrene was also carried out with very good yield, enantioselectivity.