Cyanomethyl acid halides of phosphorus and process for their preparation
申请人:Hoechst Akteingesellschaft
公开号:US04904813A1
公开(公告)日:1990-02-27
The invention relates to compounds of the general formula ##STR1## in which R.sup.1 represents Hal or C.sub.1 -C.sub.3 -alkyl and Hal reprsents a halogen having an atomic weight of 35 to 80. The invention also relates to a process for the preparation of such compounds by reacting a compound of the general formula II ##STR2## in which R.sup.2 represents C.sub.1 -C.sub.3 -alkyl or OR.sup.3 and R.sup.3 represents C.sub.1 -C.sub.8 -alkyl, preferably C.sub.1 -C.sub.3 alkyl, with an acid chloride of the formula MHaL.sub.2 (III), in which M represents SO, CO or PHal.sub.3 and Hal represents a halogen having an atomic weight from 35 to 80, and in which the reaction, if M is Co, is carried out in the presence of a catalyst which is customary for the phosgenation of diesters of phosphonic acid. Finally the invention relates to alkyl esters of cyanomethyl-methylphosphinic acid, i.e. to products of the formula II in which R.sup.2 is a methyl group and R.sup.3 is an alkyl group of 1 to 6 carbon atoms.
Odinets, I. L.; Artyushin, O. I.; Kalyanova, R. M., Russian Journal of General Chemistry, 1994, vol. 64, # 12.1, p. 1738 - 1744
作者:Odinets, I. L.、Artyushin, O. I.、Kalyanova, R. M.、Antipin, M. Yu.、Lysenko, K. A.、et al.
DOI:——
日期:——
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作者:I. L. Odinets
DOI:10.1023/a:1023906822755
日期:——
Under conditions of the phase transfer catalysis, acylation of (thio)phosphorylacetonitriles by (het)aroyl chlorides affords the Z-enol forms of C-acylation products in high yields. Their configurations were studied by IR spectroscopy, dipole moment measurements, and ab initio quantum-chemical calculations [B3LYP/6-31G(d)]. The C=C double bond and the phosphoryl or thiophosphoryl group have an s-cis arrangement. The possibility of strong intramolecular hydrogen bonding in these conformers is the governing factor responsible for the three-dimensional structures of the compounds under investigation. Derivatives of nicotinic acid existing in the individual form as zwitterions are the only exceptions.
Cycloalkylation of compounds in the series of phosphorus-substituted derivatives of acetic acid
作者:P. V. Kazakov、I. L. Odinets、A. P. Laretina、T. M. Shcherbina、P. V. Petrovskii、L. V. Kovalenko、T. A. Mastryukova
DOI:10.1007/bf00961505
日期:1990.8
1-Phosphoryl-substituted cyclopropanes, cyclobutanes, and cyclopentanes were obtained by the reaction of phosphoryl-substituted esters and nitriles of acetic acid with alpha,omega-dihaloalkanes. The influence of the CH-acidity of the starting compounds and electrophilicity of the alkylating agent on the reaction rate was examined.
KAZAKOV, P. V.;ODINETS, I. L.;LARETINA, A. P.;SHCHERBINA, T. M.;PETROVSKI+, IZV. AN CCCP. CEP. XIM.,(1990) N, S. 1873-1880
作者:KAZAKOV, P. V.、ODINETS, I. L.、LARETINA, A. P.、SHCHERBINA, T. M.、PETROVSKI+