- Reaction of Dialkyl Dithiophosphates with Arylhydrazones of Mesoxalodinitrile and with Ethyl Cyanohydrazonoacetate
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Dialkyl hydrogen dithiophosphates add in mild conditions to the nitrile group of arylhydrazones of mesoxalodinitrile and of ethyl cyanohydrazonoacetate to give 2-R-2-(arylhydrazono)-N-(dialkylphosphinothioyl)thioacetamides, 2-R-2-(arylhydrazono)-2-cyanoth
- Rymareva,Torgasheva,Zelikhover,Bel'skii
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p. 1417 - 1423
(2007/10/03)
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- CONVERSION OF NITRILES TO THIOAMIDES UNDER THE ACTION OF THE BINARY THIONYLATING SYSTEM PHOSPHORUS DITHIOACID-ALCOHOL
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Binary systems of phosphorus dithioacid-methanol and phosphorus pentasulfide-methanol are effective hydrosulfonating systems for the conversion of aromatic nitriles to the corresponding primary thioamides.In ternary systems nitrile-phosphorus dithioacid-alcohol from one to four parallel processes can occur.The structure of the phosphorus dithioacids has little effect, whereas the structures of the nitrile and alcohol substantially influence both the rate of the processes and the possible pathway.The reactivity of alcohols in these reactions drops with increasing volume of the hydrocarbon radical.
- Zabirov, N. G.,Shamsevaleev, F. M.,Cherkasov, R. A.
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- REACTION OF DIISOPROPYLDITHIOPHOSPHORIC ACID WITH BENZONITRILE IN THE PRESENCE OF A THIRD COMPONENT
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Reaction in the three component systems nitrile-dithiophosphorus acid-phenol or carboxylic acid proceeds by three routes, all of which include the initial stage of formation of imidoyldithiophosphates.The latter forms stable products by isomerization with 1,3-S->N migration of the thiophosphoryl group and by decomposition under the influence of dithiophosphorus acids, phenol, or carboxylic acid.When aniline or methyl iodide is used as the third component the reaction proceeds by a different route and leads to the formation, respectively, of amidine dithiophosphate salts or a mixture of methylation products.
- Zabirov, N. G.,Shamsevaleev, F. M.,Cherkasov, R. A.
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p. 558 - 562
(2007/10/02)
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- REACTION OF BIS-- AND BIS--DISULFIDES WITH TRIALKYLSILYLCYANIDES. NEW ROUTE TO DIALKYLPHOSPHORO- AND DIALKYLTHIOPHOSPHORO THIOCYANIDATES AND O,O,O,O-TETRAALKYLPYROPHOSPHOROTRITHIOATES
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The reaction of organophosphorus disulfides with trialkylsilylcyanide has been investigated.It provided direct evidence for the intermediacy of thiocyanidate >P(X)SCN, X=O, S in this type of reaction.The disulfides studied involved phosphoryl, phosphonyl and/or phosphinyl disulfides.They have been shown to follow the common mechanism.The studied reaction of thiophosphoryl disulfides with trimethylsilylcyanide represents a new and highly efficient route to tetraalkylpyrophosphorotrithioates.
- Lopusinski, Andrzej,Luczak, Lech,Brzezinska, Ewa
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p. 101 - 108
(2007/10/02)
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- N,N'-BIS(1-CHLOROALKYL)CARBODIIMIDES. IV. REACTIONS WITH O,O-DIALKYL DITHIOPHOSPHITES
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In a a number of cases the reaction of N,N'-bis(1-chloroalkyl)carbodiimides with O,O-dialkyl dithiophosphates takes place abnormally with retention of the carbodiimide structure in the reaction products.
- Fetyukhin, V. N.,Vovk, M. V.,Samarai, L. I.
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p. 571 - 573
(2007/10/02)
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- REACTIONS OF DIALKYL DITHIOPHOSPHORIC AND DIPHENYLDITHIOPHOSPHORIC ACIDS WITH THIOCYANATES
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The interaction between phosphorus(IV) dithio acid partial esters and thiocyanates proceeds with initial formation of addition products to the CN bond.These adducts are either split by the second molecule of dithio acid to S-alkyl dithiocarbamates and tetraalkyl trithiophosphates or rearrange into dialkyl N-thiophosphoryldithiocarbamates.The latter easily split off the thiols and convert to isothiocyanatothiophosphates.A number of thiophosphorylated and diphosphorylated thioureas were synthesized by the reaction of isothiocyanatothiophosphates with amines and α-aminoalkylphosphonates.
- Zimin, M. G.,Kamalov, R. M.,Cherkasov, R. A.,Pudovik, A. N.
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p. 371 - 378
(2007/10/02)
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