Kinetics and mechanism of the pyrylium to pyridinium cation transformation in dichloromethane
- 1 January 1985
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 2,p. 171-174
- https://doi.org/10.1039/p29850000171
Abstract
Kinetic rates for cyclisation of divinylogous amides (derived from pyrylium cations and primary amines) into pyridinium cations are measured for CH2C2 solutions and compared with previous results in water and other solvents. The ring-closure is catalysed by carboxylic acids; a postulated mechanism involves the free acid in catalysis of electrocyclic ring closure.Keywords
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