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Valorisation of Cashew Nut Shell Liquid Phenolics in the Synthesis of UV Absorbers.

Authors: Ngwira, K., Kühlborn, J., Mgani, Q., de Koning, C., & Opatz, T.
  • Journals: European Journal of Organic Chemistry
  • Pages:
  • Year: 2019

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With current concerns over the use of fossil resources for chemical synthesis of functional molecules and the effect of current UV absorbers in sunscreens have on the ecosystem, we describe a xylochemical synthesis of different classes of aromatic UV absorbers utilizing cashew nut shell liquid as a non‐edible bio‐renewable carbon source. Hydroxybenzophenones, xanthones, triazines, and flavones were synthesized starting from cardanol or anacardic acid. Several compounds exhibited favorable UVA and UVB absorption characteristics.