Name: Green Chemistry: Novel Organocatalysts for Asymmetric Michael Addition (en Inglés)
Price: 265594.00 COP
Availability: InStock
Author: Pandya, Keyur
ISBN: 9786200093202

portada Green Chemistry: Novel Organocatalysts for Asymmetric Michael Addition (en Inglés)

Formato

Libro Físico

Autor

Keyur Pandya

Editorial

LAP Lambert Academic Publishing

Idioma

Inglés

N° páginas

144

Encuadernación

Tapa Blanda

Dimensiones

22.9 x 15.2 x 0.9 cm

Peso

0.22 kg.

ISBN13

9786200093202

Categorías

Química

Green Chemistry: Novel Organocatalysts for Asymmetric Michael Addition (en Inglés)

Keyur Pandya (Autor) · LAP Lambert Academic Publishing · Tapa Blanda

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Reseña del libro "Green Chemistry: Novel Organocatalysts for Asymmetric Michael Addition (en Inglés)"

The development of green catalysts (organocatalysts) for fundamental carbon-carbon bond forming reactions is challenging. The organocatalytic Michael addition of ketones to nitroalkenes is of special interest as it generates two contiguous stereocenters and the products (γ- nitro ketones) are useful intermediates. This reaction can be efficiently catalyzed by pyrrolidine-based chiral, secondary diamines and triamines. The use of a protic acid in conjunction with the amine catalyst is beneficial and the Michael addition products (syn diastereomers) are obtained with excellent enantioselectivities (up to 99% ee) and diastereoselectivity (up to 50:1 dr) for cyclic ketones and nitroalkenes derived from aromatic aldehydes. The effect of changes in the catalyst and protic acid structure, variation of catalyst/protic acid combinations and effect of structural changes in the ketone and nitroalkenes are discussed. The application of the chiral triamines in Michael reactions involving iminium ion intermediates has been examined. The attempted syntheses of pyrrolidine-based organocatalysts with guanidine-containing side chains as well as catalysts based on the camphor scaffold are presented.