Reaction of teimethylsilyl bis(diethylamido) phosphite with proton-containing reagents

Conclusions Depending on the nature of the proton donor, trimethylsilyl bis(diethylamido)phosphite reacts with proton-containing reagents like HCl, alcohol, and aniline in a variable manner. Trimethylsilyl diethyl-amidochlorophosphite and the amine are formed in the reaction with HCl. Tetraethyldiamidophosphite and either trimethoxysilane or diethylaminosilane are formed when reaction is with either alcohol or aniline.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 463–466, February, 1976.     

Synthesis and properties of 1-trimethylsilylthia-2,2-bis(trimethylsilyloxy)ethene

A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Branch, Russian Academy of Sciences, 420083 Kazan. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 3, p. 766, March, 1992.     

Reaction of 2-phenyl-3-acetyl-4,5 -benzo-1,3,2-oxazaphospholane with dienes

Russian Chemical Bulletin - 2-Phenyl-3-acetyl-4,5-benzo-1,3,2-oxazaphospholane reacts with conjugated dienic hydrocarbons to give phospholenes and 2-methylbenzoxazole.     

Reactions of 2-[N,N-bis(trimethylsilyl)]amino-4,5-benzo-1,3,2-dioxaphospholane with carboxylic and phosphorous acids and acetic anhydride

The reactions of 2-(N,N-bis(trimethylsilyl)]amino-4,5-benzo-1,3,2-dioxaphospholane with acetic acid, benzoic acid, and acetic anhydride yield 2-trimethylsiloxy-4,5-benzo-1,3,2-dioxaphospholane. Upon reaction with dialkyl phosphites, the silylamido-phosphite acts as a silylating agent.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 232–235, January, 1991.     

Reaction of dibromoalkanes with silyl phosphites. Synthesis and properties of mono-and diphosphonoalkanes

Reactions of dibromoethane and dibromopropane with silyl phosphites are studied. Mono-and diphosphonoalkanes of various structures were prepared, and their chemical properties were studied.     

Synthesis of 10-(N′-phenyl)imidoyl derivatives of phenothiazine,and their reactions with o,o-dialkylthio- and dithiophosphates

Condensation of phenothiazine with phenyl isocyanide dichloride has given 10(N-phenylchloroformimidoyl)phenothiazine, exchange reactions of which with salts of diakylthio- and dithiophosphoric acids result in rearrangement of the initially formed 10-[N-phenyldialkoxy(thio)phosphorylthioformimidoyl]phenothiazines to 10-{N-phenyl-N-[dialkoxy(thio)phosphoryl]thiocarbamoyl}phenothiazines, while reaction with diisopropyl dithiophosphoric acid affords diisopropyl chlorothiophosphate, phenyl isothiocyanate, and phenothiazine. 10-(N-Phenylethoxyformimidoyl)phenothiazine alkylates dithiophosphoric acid to give 10-(N-phenylcarbamoyl)phenothiazine, while N²-phenyl-N¹,N¹-diethyl-(10-phenothiazinyl)formamidine reacts with diisopropyl dithiophosphoric acid, affording the salt N²-phenyl-N¹,N¹-diethyl-(10-phenothiazinyl)formamidinium O,O-diisopropyl dithiophosphate.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2596–2601, November, 1989.     

Reactions of α-Aminoalkylphosphonates with Iso(thio)cyanatophosphates(phosphonates,phosphinates). Synthesis of 1,3,4-Diazaphospholidines and 1,3,4-Oxaza(thiaza)phospholines

Phenyl -aminoalkylphosphonates add to phenyl iso(thio)cyanates to give saturated heterocycles, 1,3,4-diazaphospholidin-2-(thi)ones. The reaction of diphenyl (-methylamino)benzylphosphonate with diethyl isothiocyanatophosphate involves initial formation of 1,3,4-tiazaphospholidine-2-thiones containing exo- and endocyclic phosphorus atoms. These products are readily hydrolyzed in air, yielding diethyl isothio- cyanatophosphate and phenyl hydrogen (-methylamino)benzylphosphonate. The final products of the reaction of chloromethyl isocyanatophosphonates with aminoalkylphosphonates are 1,3,4-oxazaphospholines. Phenyl aminoalkylphosphonates react with chloromethyl isocyanatophosphonates to give saturated heterocycles, 1,3,4-diazaphospholidines, whereas with chloromethyl isothiocyanatophosphonates 1,3,4-thiazaphospholines are formed.     

Phosphorus containing pyrydoxal azomethines and alkoxyfuropyridines of salt structure

The reaction of azomethines of pyridoxal or alkoxyfuropyridines with phosphorus acids produces new salt derivatives.     

Phosphorylation of pyridoxal azomethines. Synthesis of phosphorus containing azomethines and furopyridines

New O-phosphorylated pyridoxal derivatives have been synthesized through the reaction of azomethines with Р^V acid chlorides. 2-Chloro-2-thioxo-5,5-dimethyl-1,3,2-dioxaphosphinanes and diethylchlorothiophosphate have been employed as phosphorylating agents. Regardless of the nature of the phosphorylating agent, the reaction is regioselective at phenolic hydroxyl group. The structure of final products is determined by the nature of the substituent at the nitrogen atom. If R is alkyl or cycloalkyl group, the products of the reaction represent phosphorylated pyridoxal imines, whereas phosphorylated furopyridines are formed in the case R is aryl substituent.