Facile synthesis and spectral characterization of 2, 5-bis (cyclohexylamino)-1, 4-benzoquinone polymorphs from methyl and ethyl protocatechuic aldehydes

Add time:07/11/2019    Source:sciencedirect.com

Two polymorphs of 2,5-bis(cyclohexylamino)-1,4-benzoquinone (BCBQI&BCBQII) are synthesized by an efficient alternate method which includes the oxidation of an aromatic aldehyde to benzoquinone moiety followed by its nucleophilic substitution in a single pot. The synthesized polymorphs have been characterized and distinguished by spectral and single crystal X-ray diffraction methods. A possible mechanism for the conversion is also suggested.

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