Gram-Scale Synthesis of 2,5-Difluoro-7,7,8,8-tetracyanoquinodimethane (F2-TCNQ).

The molecule 2,5-difluoro-7,7,8,8-tetracyanoquinodimethane (F2-TCNQ) is an organic semiconductor with many promising properties, including high charge mobility (μ). However, an efficient gram-scale synthesis of F2-TCNQ has not been fully documented. Herein, we report a synthesis of F2-TCNQ via a three-step sequence that affords F2-TCNQ in 58% cumulative yield. This synthesis was used to prepare more than 1 g of F2-TCNQ.