Access to Functionalized α-Trifluoromethyl-α-aminophosphonates via Intermolecular Ene–Yne Metathesis
摘要:
An efficient approach to a new family of highly functionalized P analogues of alpha-trifluoromethyl-substituted phenylalanine and its homologues using ruthenium-catalyzed intermolecular ene-yne metathesis as a key step of the reaction sequence has been developed. The method includes cross metathesis of alpha-alkynyl-alpha-trifluoromethyl-alpha-aminophosphonates with alkenes under catalysis by second-generation Grubbs carbene complex to afford the corresponding aminophosphonates with 1,3-diene backbone followed by one-pot Diels-Alder reaction-aromatization step.
Rh(III)‐Catalyzed C−H Activation/Annulation of Aryl Hydroxamates with CF
<sub>3</sub>
‐Containing
<i>α</i>
‐Propargyl
<i>α</i>
‐Amino Acid Derivatives
作者:Daria V. Vorobyeva、Dmitry A. Petropavlovskikh、Ivan A. Godovikov、Sergey E. Nefedov、Sergey N. Osipov
DOI:10.1002/ejoc.202100040
日期:2021.3.26
Novel α‐CF3‐containing isoquinolone derivatives have been synthesized throgh the Rh(III)‐catalyzedC−Hactivation/annulation of arylhydroxamates with α‐CF3‐α‐propargyl‐α‐amino carboxylates/phosphonates.
Synthesis and structure of diethyl (1-benzyloxycarbonylamino-1-carboranyl-3,3,3-trifluoropropyl)phosphonate
作者:S. V. Timofeev、E. A. Prikaznova、Z. A. Starikova、S. N. Osipov、V. I. Bregadze
DOI:10.1007/s11172-013-0279-7
日期:2013.8
C-carboranylmethylmagnesium bromide with diethyl (N-benzyloxycarbonyl-2,2,2-trifluoroethaneimidoyl)phosphonate gave P- and N-protected aminophosphonic acid, an organophosphorus analog of alanine. The phosphonate was characterized by 1H, 19F, and 31P NMR spectroscopy. X-ray diffraction analysis of diethyl (1-benzyloxycarbonylamino-1-carboranyl-3,3,3-trifluoropropyl)phosphonate showed that the molecules form dimers
A new preparative method for the synthesis of diethyl 1-diazo-2,2,2-trifluoroethylphosphonate via an imino phosphonate
作者:N. M. Karimova、D. V. Vorobyeva、G. T. Shchetnikov、S. N. Osipov
DOI:10.1007/s11172-010-0051-1
日期:2010.1
A preparativemethod for the synthesis of diethyl 1-diazo-2,2,2-trifluoroethylphosphonate from trifluoroacetic anhydride and benzyl carbamate via diethyl 1-benzyloxycarbonylimino-2,2,2-trifluoroethylphosphonate is developed. Optimum conditions for the chlorination of benzyl N-trifluoroacetylcarbamate with SOCl2—Py to afford the imidoyl chloride, phosphorylation of the latter under the conditions of
Synthesis of functionalized α-CF3-α-aminophosphonates via Cu(I)-catalyzed 1,3-dipolar cycloaddition
作者:Daria V. Vorobyeva、Natalya M. Karimova、Tamara P. Vasilyeva、Sergey N. Osipov、Grigory T. Shchetnikov、Irina L. Odinets、Gerd-V. Röschenthaler
DOI:10.1016/j.jfluchem.2009.12.003
日期:2010.3
A convenient method for the preparation of alpha-CF3-alpha-aminophosphonates bearing alkynyl group at the a-carbon atom has been described. New alkynylphosphonates have been further utilized in the synthesis of functionalized triazole-containing alpha-CF3-alpha-aminophosphonates via copper-catalyzed (3+2)-cycloaddition to different organic azides. (C) 2009 Elsevier B.V. All rights reserved.
Addition of Allylindium Reagents to α-Iminotrifluoroethyl-phosphonates: Synthesis of CF<sub>3</sub>-Containing α-Aminoalkylphosphonates
作者:Ki Hyung Suh、Dae Young Kim
DOI:10.1080/00397910802431156
日期:2009.2.9
Treatment of -iminotrifluoroethylphosphonates with allylindium reagents in the presence of acetic acid afforded the corresponding CF3 -containing -aminoalkylphosphonates in high yields (83-97%) under mild conditions.