Solid-phase Functionalization of Heterocycles by Direct Lithiation
作者:Zhengong Li、A. Ganesan
DOI:10.1055/s-1998-1684
日期:1998.4
Lithiation of polymer-bound 3-furanmethanol and 3-thiophenemethanol followed by the addition of electrophiles and resin cleavage afforded 2,4-disubstituted furans and thiophenes respectively in good yield. The 2,4-substituted thiophene can also be further lithiated on solid-phase at C-5 to give 2,3,5-substituted thiophenes.