Synthesis of 2,3-disubstituted thiophens via metalated acetylenes and allenes
作者:R.L.P. De Jong、L. Brandsma
DOI:10.1016/s0022-328x(00)87040-0
日期:1982.11
2,3-Disubstituted thiophen derivatives have been obtained in reasonable yields by treating 2-alkyne- and allene derivatives with butyllithium and potassium t-butoxide in tetrahydrofuran, adding carbon disulfide to the organometallic intermediate and then successively adding t-butyl alcohol, hexamethyl-phosphoric triamide and methyl iodide.