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
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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