Abstract

During the years different types of N-sulfonic acids are prepared and used as efficient catalysts for the promotion of various types of organic reactions. These methods lead to high yields of the products under mild conditions during acceptable reaction times. These catalysts are recyclable and can be reused in their activities.

Keywords: N-Sulfonic acids, Catalysis, Multi-component reactions, Protection, Mild reaction conditions, Reusable catalysts.

Graphical Abstract