sodium iodide in acetonitrile T=20°C; 2.5 h;

sodium iodide in acetonitrile Heating;

1: 1) nBuLi 2: Heating View Scheme

1: 2-dimethoxyphosphinyl-1,3-benzdithiole With n-butyllithium in tetrahydrofuran T=-78°C; Wittig-Horner reaction; Inert atmosphere; 2: 4-methoxy-benzaldehyde in tetrahydrofuran T=-78 - 20°C; Wittig-Horner reaction; Inert atmosphere;

n-butyllithium in tetrahydrofuran T=-78°C; Yield given;