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Current Organic Chemistry

Editor-in-Chief

ISSN (Print): 1385-2728
ISSN (Online): 1875-5348

Solvent Free Synthesis of Novel Mono- and Bis-Benzoxazines from Cashew Nut Shell Liquid Components

Author(s): Orazio A. Attanasi, Mohamed S. Behalo, Gianfranco Favi, Diego Lomonaco, Selma E. Mazzetto, Giuseppe Mele, Iolanda Pio and Giuseppe Vasapollo

Volume 16, Issue 21, 2012

Page: [2613 - 2621] Pages: 9

DOI: 10.2174/138527212804004616

Price: $65

Abstract

Cashew nut shell liquid (CNSL) is a largely available by-product of the cashew agro-industry. In this paper, the main constituents (cardanol, cardol and methylcardol) obtained after separation of the CNSL mixture have been used as starting material to prepare a variety of novel mono- and bis-benzoxazines via cyclization reactions with formaldehyde and aromatic amine derivatives under mild conditions. These model reactions were successfully extended to the cardanol and cardols mixture affording the one pot synthesis monoand bis-benzoxazines.

Keywords: Benzoxazine, Bis-benzoxazine, Cardanol, Cardol, CNSL, Methylcardol


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