Synthesis and isolation of a monocyclic phosphorane with a P-C bond derived from chloral

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2876–2877, December, 1990.     

Simultaneous Formation of Cage and Spirane Pentaalkoxyphosphoranes in Reaction of 5,5-Dimethyl-2-(2-oxo-1,2-diphenylethoxy)-1,3,2-dioxaphosphorinane with Hexafluoroacetone

Russian Journal of General Chemistry - The reaction of hexafluoroacetone with 5,5-dimethyl-2-(2-oxo-1,2-diphenylethoxy)-1,3,2-dioxaphosphorinane occurs in two simultaneous directions: through the...     

Unstable 2,2-dibromo-2-ethoxy-4,5-benzo-1,3,2-dioxaphospholane in addition reactions to chloral and benzaldehyde

2,2-Dibromo-2-ethoxy-4,5-benzo-1,3,2-dioxaphospholane (I) adds to chloral with no change in the phosphorus coordination. In contrast to chloral, benzaldehyde is converted to dibromotoluene upon reaction with (I).Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1663–1665, July, 1991.     

Reaction of 2-tert-butoxy-4,5-benzo-1,3,2-dioxaphospholane with tribromoacetaldehyde

The reaction of 2-tert-butoxy-4,5-benzo-1,3,2-dioxaphospholane with tribromo-acetaldehyde proceeds by initial halophilic attack on the bromine atom, leading to a product with retention of the P-Br bond (pyrocatechol bromophosphate) and an anion exchange product (pyrocatechol dibromovinylphosphate), and by initial attack at the carbon atom of the C=O group, which is accompanied by the elimination of isobutylene to form an -hydroxyphosphonate.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1909–1912, August, 1989.     

Synthesis and reaction of N-butyl-N-isobutenyl-aminotrimethylsilane with 4,5-benzo-2-chloro-1,3,2-dioxaphospholane

The reaction of N-butylisobutyraldimine with trimethyliodosilane obtained in situ proceeds to give N-butyl-N-isobutenylaminotrimethylsilane, which reacts with 4,5-benzo-2-chloro-1,3,2-dioxaphospholane to yield 2-(N-butyl-N-isobutenylamino)-4,5-benzo-1,3,2-dioxaphospholane.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Science Center, Russian Academy of Sciences, 420083 Kazan. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1923–1924, August, 1992.     

Synthesis and some properties of 2-acetylamido-4,5-benzo-1,3,2-dioxaphospholane

The reaction of pyrocatechol chlorophosphite with N-trimethylsilylacetamide gave 2-acetamido-4,5-benzo-1,3,2-dioxaphospholane. The reaction of this product with hexamethyldisilazane leads to 2-trimethylsiloxy-4,5-benzo-1,3,2-dioxaphospholane, while its reactions with diethylamine, trimethylsilyldiethylamine, and bis(dimethylamino)methane give 2-dialkylamino-4,5-benzo-1,3,2-dioxaphospholanes.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Branch, Russian Academy of Sciences, 420008 Kazan. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 220–222, January, 1992.     

The reaction of 1,3-dibutyl-2-ethoxy-4,5-dimethyl-2-oxo-1,3,2-diazaphosphol-4-ene with tetracyanoethylene

The reaction of 1,3-dibutyl-2-ethoxy-4,5-dimethyl-2-oxo-1,3,2-diazaphosphol-4-ene with tetracyanoethylene gives 6-amino-1,3-dibutyl-5-cyano-2-ethoxy-4-(1-imino-2-cyanoethyl)-2-oxo-1,3,2-diazaphosphindane.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 303–305, February, 1994.     

Reaction of 2-[N,N-bis(Trimethylsilyl)]amino-4,5-benzo-1,3,2-dioxaphospholane with carboxylic acid halides

Conclusion The reaction of 2-[N,N-bis(trimethylsilyl)]amino-4,5-benzo-1,3,2-dioxaphospholane with acetyl and benzoyl chlorides leads to the formation of silicon-containing diazadiphospheti-dines.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 939–940, April, 1986.     

1,2-2(H)-1,3,2-Benzoxazaphosphorine-2-Sulfide

Abstract

Reports [1-5] concerning the preparation of benzo-1,3,2-benzoxazaphosphonaline containing a substituent on nitrogen have been published. The synthesis of parent compund, 1,2-dinydro-1,3,2-benzoxazaphosphorine, has not been reported. We found that it can be easily synthesized pY the reaction of salicylic aldehyde with O-alkyl-phosphoryl dichlorides and ammonia.     

Reaction of 5-oxo-2-phenyl-4,4-bis(trifluoromethyl)-4,5-dihydro-1,3,2-benzodioxaphosphepine with chloral. The synthesis and spatial structure of 5-carbaphosphatrane containing a four-membered ring

Phosphorylation of 2-hydroxyphenyl 2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl ketone with dichloro(phenyl)phosphine gave 5-oxo-2-phenyl-4,4-bis(trifluoromethyl)-4,5-di-hydro-1,3,2-benzodioxaphosphepine. Heating of the latter initiated an intramolecular interaction of the P atom with the carbonyl group. Hydrolysis of the intermediate product yielded 3-hydroxy-2-oxo-2-phenyl-3-[2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl]-2,3-di-hydro-1,2λ⁵-benzo[d]oxaphosphole. The reaction was highly stereoselective (P_RC_S/P_SC_R). The reaction of the starting phosphepine with chloral proceeded highly stereoselectively (P_RC_SC_S/P_SC_RC_R) to give a 5-carbaphosphatrane derivative containing a four-membered ring, namely, 1-phenyl-3-trichloromethyl-10,10-bis(trifluoromethyl)-6,7-benzo-2,4,8,9-tetraoxa-1λ⁵-phosphatricyclo[3.3.2.0¹,⁵]decene. The trigonal bipyramid of the 5-carbaphosphatrane derivative is made up of the equatorial O atoms and the apical C atoms.     

Luminescent zinc(II) and cadmium(II) complexes based on 2-(4,5-dimethyl-1H-imidazol-2-yl)pyridine and 2-(1-hydroxy-4,5-dimethyl-1H-imidazol-2-yl)pyridine

Complexes ZnL¹Cl₂, CdL¹Cl₂, ZnL ₂ ¹ Cl₂ ^·1.5H₂O, CdL ₂ ¹ Cl₂ ^·2H₂O, CdL ₂ ¹ Cl₂ ^·MeOH·H₂O [L¹ = 2-(4,5-dimethyl-1H-imidazol-2-yl)pyridine] and inner-complex compounds ZnL ₂ ² ·2H₂O, CdL ₂ ² [HL² = 2-(1-hydroxy-4,5-dimethyl-1H-imidazol-2-yl)pyridine] were synthesized. The complexes exhibit bright photoluminescence in the blue region of the spectrum, with the intensity exceeding this characteristic of the compounds L¹ and HL². Compound L¹ in aqueous solution is a potential chemosensor for the determination of zinc and cadmium.     

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 2-Isobutyl-4,5-dimethyl-1,3,2-dioxaborinane with Anhydrous Aluminum Bromide

Russian Journal of General Chemistry -     

Molecular structure of 6,6-dimethyl-2-dimethylamino-2-oxo-4,5; 7,8-dibenzo-1,3,6,2-dioxasilaphosphocin and 2-methyl-2,6-dioxo-4,5; 7,8-dibenzo-1,3,2-dioxaphosphocin

An x-ray structural investigation of the synthesized title compounds (1) and (2) has been performed. The heterocycle of 1 has a boat-chair conformation with the P²=O² bond in the axial position. The heterocycle of 2 has a distorted-boat conformation with the C⁶=O carbonyl in the plane of one of the fused benzene rings. The P²=O² bond is in a pseudoequatorial position.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan' Scientific Center, Russian Academy of Sciences, 420083 Kazan'. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 2, pp. 329–334, February, 1992.