A facile synthesis of 1-H-2,2-difluorovinylphosphorus compounds from 2,2,2-trifluoroethyl trifluoromethanesulfonate and substitutions of their vinylic fluorines
摘要:
2,2-Difluorovinylphosphine as well as its oxide and borane-complex are synthesized in high yields via the P-trifluoroethylation of lithium diphenylphosphide with 2,2,2-trifluoroethyl trifluoromethanesulfonate, followed by dehydrofluorination with potassium tert-butoxide. The reactions of 2,2-difluorovinylphosphine oxide and borane-complex with hydride, S- and N-nucleophiles proceed via an addition-elimination process to afford mono- or nonfluorovinylphosphorus compounds and carbamoylmethylphosphine oxides. (C) 1999 Elsevier Science S.A. All rights reserved.
A facile synthesis of 1-H-2,2-difluorovinylphosphorus compounds from 2,2,2-trifluoroethyl trifluoromethanesulfonate and substitutions of their vinylic fluorines
摘要:
2,2-Difluorovinylphosphine as well as its oxide and borane-complex are synthesized in high yields via the P-trifluoroethylation of lithium diphenylphosphide with 2,2,2-trifluoroethyl trifluoromethanesulfonate, followed by dehydrofluorination with potassium tert-butoxide. The reactions of 2,2-difluorovinylphosphine oxide and borane-complex with hydride, S- and N-nucleophiles proceed via an addition-elimination process to afford mono- or nonfluorovinylphosphorus compounds and carbamoylmethylphosphine oxides. (C) 1999 Elsevier Science S.A. All rights reserved.
Photoinduced generation of phosphoranyl radicals offers a versatile strategy to access a variety of synthetically valuable radicals. A long-standing challenge remains in the regulation of phosphoranyl radical to undergo α-scission pathway, although the β-scission mode has been intensively studied. We herein developed an unprecedented protocol for selective α-scission of the P(OH)R3 radical intermediate
Zn-Mediated Scalable Synthesis of Trifluoromethylphosphines from Phosphine Chlorides and CF<sub>3</sub>Br
作者:Deqian Peng、Shouzhi Zhang、Wu Fan、Yuan Wen、Suhua Li
DOI:10.1021/acs.orglett.3c01253
日期:2023.6.2
reported TFMPhos, products from nucleophilic or electrophilic trifluoromethylation of substrates, requiring one or more steps and prepared from phosphine chlorides, are very limited in structure diversity. Herein, we report a convenient and scalable (up to 100 mmol) recipe to synthesize diverse trifluoromethylphosphines via direct radical trifluoromethylation of phosphine chlorides with CF3Br in the presence
A facile synthesis of 1-H-2,2-difluorovinylphosphorus compounds from 2,2,2-trifluoroethyl trifluoromethanesulfonate and substitutions of their vinylic fluorines
2,2-Difluorovinylphosphine as well as its oxide and borane-complex are synthesized in high yields via the P-trifluoroethylation of lithium diphenylphosphide with 2,2,2-trifluoroethyl trifluoromethanesulfonate, followed by dehydrofluorination with potassium tert-butoxide. The reactions of 2,2-difluorovinylphosphine oxide and borane-complex with hydride, S- and N-nucleophiles proceed via an addition-elimination process to afford mono- or nonfluorovinylphosphorus compounds and carbamoylmethylphosphine oxides. (C) 1999 Elsevier Science S.A. All rights reserved.