Synthesis of a Thiophene‐Based Nonlinear Optical Chromophore

Abstract

This report details an eight‐step synthesis of the thiophene‐type nonlinear optical chromophore 1 in 38% overall yield. Only one early step required chromatography.

Keywords:

• Horner–Wadsworth–Emmons
• Knoevenagel
• nonlinear optical
• thiophene
• Vilsmeier–Haack

Acknowledgments

Financial support from the Office of Naval Research is gratefully acknowledged. M. C. D. also thanks Geoffrey A. Lindsay (NAWCWD) for advice and encouragement throughout the course of this work and Andrew P. Chafin (NAWCWD) for comments and suggestions in the preparation of this manuscript.