Synthesis of diethyl 2H‐naphtho[2,1,b]pyran‐2,3‐dicarboxylate and some related compounds as UV absorbers

Abstract

Purpose

Synthesis and evaluation of new naphthopyran and related compounds as ultraviolet absorbers.

Design/methodology/approach

The new naphthopyran and related compounds were prepared using new synthesis methodology which gave new derivatives via positions not accessible by traditional methods.

Findings

A new method for the preparations of naphthopyran was developed. The naphthopyran compounds prepared had promising UV absorption/protection capabilities.

Practical implications

The new compounds synthesised had unique character enabling them to be used in applications such as UV absorber and sunscreen.

Originality/value

New method of synthesis and the possibility of using the naphthopyran derivatives as UV absorber in many applications.

Citation

Asiri, A.M. and Ismail, I.M.I. (2005), "Synthesis of diethyl 2H‐naphtho[2,1,b]pyran‐2,3‐dicarboxylate and some related compounds as UV absorbers", Pigment & Resin Technology, Vol. 34 No. 1, pp. 33-36. https://doi.org/10.1108/03699420510572584