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Catalysis of niobium pentachloride NbCl5 in organic synthesis

2019-04-24
Since the 1920s and 1930s, when g. n. Lewis put forward the Lewis acid-base theory and laid the foundation for it, Lewis acid catalysts have developed rapidly.Lewis acid catalyst can make many organic reactions that could not be carried out or difficult to be carried out under relatively mild conditions, so as to promote the development of organic synthesis chemistry to a large extent, and make it widely used in organic synthesis.
 
The application of niobium pentachloride NbCl5 as a lewis acid catalyst in organic chemistry was reviewed.The reaction catalyzed by niobium pentachloride mainly involves the formation and cracking of protective groups, reduction reaction, ring-forming reaction, addition reaction, substitution reaction, rearrangement reaction and other reactions.

 
To sum up, niobium pentachloride NbCl5  plays a very important role in organic synthesis.Most of the reactions catalyzed by niobium pentachloride have the advantages of mild conditions, short time, high yield, low amount of catalyst, simple operation, and certain stereoselectivity and location.These advantages make niobium pentachloride widely used in organic synthesis.