The preparation and reactions of alkynylphosphonate hexacarbonyldicobalt complexes
作者:R.John Baxter、Graham R. Knox、Mark McLaughlin、Peter L. Pauson、Mark D. Spicer
DOI:10.1016/s0022-328x(98)01201-7
日期:1999.5
The preparation of a series of hexacarbonyldicobalt alkynylphosphonate complexes, Co2(CO)6[R1CCP(O)(OR2)2] is reported. They are found to be unreactive under a range of conditions and this is ascribed to a combination of electron deficiency and alkyne π to phosphorus π-acceptor orbital interactions. Complexes of alkynyl carboxylates are more reactive. Reaction of diethyl 1-propynylphosphonate with
Halodephosphorylation of α,β-unsaturated phosphonic acid monoesters
作者:Hind Lahrache、Sylvie Robin、Gérard Rousseau
DOI:10.1016/j.tetlet.2005.01.089
日期:2005.3
Reaction of α,β-ethylenic and acetylenic phosphonicacidmonoesters with (biscollidine)iodine(I) or (biscollidine)bromine(I) hexafluorophosphate led to α,β-unsaturated halides by, without precedent, dephosphorylation reactions.
Selective Metal-Controlled Synthesis of Trifluoromethylated (Indolin-2-ylidene)methyl- and Quinolin-3-ylphosphonates
作者:Alexander Yu. Mitrofanov、Valentina A. Bychkova、Sergey E. Nefedov、Irina P. Beletskaya
DOI:10.1021/acs.joc.0c00913
日期:2020.11.20
Metal-catalyzed (Cu, Ag, Au) reactions of alkynylphosphonates with 1-(2-aminophenyl)-2,2,2-trifluoroethan-1-ones were developed. Terminal alkyne diethyl ethynylphosphonate reacted with ketones to give different products depending on the catalyst used. With a CuI/PPh3 catalytic system, the formation of CF3-containing indoline derivatives was observed with good yields. The use of AgSbF6 as a catalyst
Hydroboration of Unsaturated Phosphonic Esters: Synthesis of Boronophosphonates and Trisubstituted Vinylphosphonates
作者:Inna Pergament、Morris Srebnik
DOI:10.1021/ol006836o
日期:2001.1.1
[figure: see text] Hydroboration of vinyl phosphonates with pinacolborane (PBH) proceeds to give phosphonoboronates, 2. Surprisingly, such compounds have not been reported before. The reaction works well with terminal alkenylphosphonates. Internal alkenylphosphonates give complex mixtures. Hydroboration/Suzuki coupling of alkynylphosphonates, with PBH, in a one-pot procedure gives trisubstituted vinylphosphonates
Alkyne-Based, Highly Stereo- and Regioselective Synthesis of Stereodefined Functionalized Vinyl Tellurides
作者:Xian Huang、Chun-Gen Liang、Qing Xu、Qi-Wen He
DOI:10.1021/jo001026b
日期:2001.1.1
(Z)-beta-Aryltellurovinylphosphonates and (Z)-beta-aryltellurovinyl sulfones were synthesized via the highly stereoselective anti-hydrotelluration of 1-alkynylphosphonates and 1-alkynyl sulfones. The configurations of these compounds were characterized via 1H NMR spectra or NOESY experiments and by X-ray diffraction analysis; (E)-beta-aryltellurovinyl sulfones were obtained with the reaction of sodium
(Z)-β-芳基硬脂基乙烯基膦酸酯和(Z)-β-芳基硬脂基乙烯基砜是通过对1-炔基膦酸酯和1-炔基砜进行高度立体选择性的抗氢纤化作用合成的。这些化合物的构型通过1 H NMR光谱或NOESY实验以及X射线衍射分析进行表征。通过芳基碲酸钠与(E)-2-碘乙烯基砜的反应,得到(E)-β-芳基碲基乙烯基砜,从而证实了上述抗加氢碲化的立体化学。当炔烃与二芳基二碲化物和芳基亚磺酸钠的串联反应在AcOH / H2O(4/1)中进行时,一步即可以高收率获得相应的(E)-β-芳基tellurovinyl砜。该反应是高度区域选择性和立体选择性的,并且通过使用芳基亚磺酸盐作为磺酰基自由基前体和二芳基二碲化物作为自由基受体来进行。(E)-1-碘-2-芳基碲代烯烃可通过将ArTeI与末端炔在THF中反加成而获得。化合物17b的立体化学也通过X射线衍射分析确定。