Synthesis of [1-14C]-2,2-difluoroethene from [14C]-formaldehyde
作者:Jan A. Ruzicka、Weiming Qiu、Max T. Baker、Donald J. Burton
DOI:10.1002/jlcr.2580340108
日期:1994.1
[1-14C]-2,2-Difluoroethene was synthesized from [14C]-formaldehyde using a modification of the Wadsworth-Emmons reaction, via formation of the intermediate (EtO)2P(O)CF214CH2OSiMe3. This highly volatile product was collected in a liquid nitrogen trap at a purity of >97% and specific activity of 0.2 mCi/mmol, with yields of 10 - 15%.