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Letters in Organic Chemistry


ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

Synthesis of Bromo- and Carboxylic Acid-Substituted Methylenepyrans

Author(s): Nikolay Vologdin, Sebastien Gauthier, Sylvain Achelle, Bertrand Caro and Francoise Robin-le Guen

Volume 11, Issue 8, 2014

Page: [606 - 614] Pages: 9

DOI: 10.2174/1570178611666140512210227

Price: $65


In this contribution we describe a series of pyranylidene derivatives bearing bromine atoms in various positions. Some of these bromo derivatives have been converted in carboxylic acid by halogen-metal exchange reaction using gaseous CO2 as electrophile. Selected compounds have been studied by UV-visible absorption and cyclic voltametry to study the influence of the substituent on the pyranylidene core.

Keywords: Methylenepyrans, wittig reaction, halogen-metal exchange, aromatic bromide, carboxylic acid, electroactive compounds.

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