Category: 312-40-3

Kira, Mitsuo published the artcileA new mode of fluoride-ion exchange reactions between tetracoordinate silane and pentacoordinate fluorosilicate, SDS of cas: 312-40-3, the publication is Chemistry Letters (1995), 807-8, database is CAplus.

Intramol. fluoride-ion donor-acceptor systems such as [p- and m-(difluorophenylsilyl)phenyl]trifluorophenylsilicates showed a new mode of fluoride-ion exchange reactions in solution, for which a concerted bimol. exchange mechanism through cyclophane-like transition states was proposed on the basis of a dynamic ¹³C NMR anal. of rates and activation parameters.

Chemistry Letters published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, SDS of cas: 312-40-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Balatoni, Istvan published the artcile¦Â-amino- and alkoxy-substituted disilanides, Related Products of catalysis-chemistry, the publication is Molecules (2019), 24(21), 3823, database is CAplus and MEDLINE.

Our recent study on formal halide adducts of disilenes led to the investigation of the synthesis and properties of ¦Â-fluoro- and chlorodisilanides. The reaction of the functionalized neopentasilanes (Me₃Si)₃SiSiPh₂NEt₂ and (Me₃Si)₃SiSiMe₂OMe with KOtBu in the presence of 18-crown-6 provided access to structurally related ¦Â-alkoxy- and amino-substituted disilanides. The obtained Et₂NPh₂Si(Me₃Si)₂SiK¡¤18-crown-6 was converted to a magnesium silanide and further on to Et₂NPh₂Si(Me₃Si)₂Si-substituted ziroconocene and hafnocene chlorides. In addition, an example of a silanide containing both Et₂NPh₂Si and FPh₂Si groups was prepared with moderate selectivity. Also, the analogous germanide Et₂NPh₂Si(Me₃Si)₂GeK¡¤18-crown-6 could be obtained.

Molecules published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Balatoni, Istvan published the artcileDisilene Fluoride Adducts versus ¦Â-Halooligosilanides, Formula: C12H10F2Si, the publication is Inorganic Chemistry (2019), 58(20), 14185-14192, database is CAplus and MEDLINE.

Extending the chem. of disilene fluoride adducts studied earlier by us, we investigated the formation of 1,1-bis(trimethylsilyl)fluorodiphenylsilylsilanide, which was prepared by reaction of (Me₃Si)₃SiSiPh₂F with KO^tBu. The formed FPh₂SiSi(Me₃Si)₂K displays distinctively different structural and spectroscopic features compared to the earlier reported F(Me₃Si)₂SiSi(SiMe₃)₂K. While the latter eliminates metal fluoride upon reaction with MgBr₂, the resp. magnesium silanide is formed from FPh₂SiSi(Me₃Si)₂K. Reaction of (Me₃Si)₃SiSiPh₂Cl with KO^tBu proceeded similarly, but the formed ClPh₂SiSi(Me₃Si)₂K easily undergoes potassium chloride elimination to the disilene Ph₂Si:Si(SiMe₃)₂. Compared to F(Me₃Si)₂SiSi(SiMe₃)₂K, which can be regarded as a disilene fluoride adduct, structural, spectroscopic, and reactivity properties of FPh₂SiSi(Me₃Si)₂K distinguish it as a ¦Â-fluorodisilanide. Potassium 2-fluoro- and 2-chloro-2,2-diphenyl-1,1-bis(trimethylsilyl)disilanides can be prepared by reaction of fluoro- and chlorodiphenylsilyltris(trimethylsilyl)silanes with KOtBu. Structural and spectroscopic evidence characterizes these compounds as ¦Â-oligosilylsilanides, which is in contrast to the previously observed 2-fluoro-1,1,2,2-tetrakis(trimethylsilyl)disilanides, which can be regarded as disilene fluoride adducts.

Inorganic Chemistry published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Formula: C12H10F2Si.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Kim, Jaeseung published the artcileSilanediol Inhibitors of Angiotensin-Converting Enzyme. Synthesis and Evaluation of Four Diastereomers of Phe[Si]Ala Dipeptide Analogues, Safety of Difluorodiphenylsilane, the publication is Journal of Organic Chemistry (2005), 70(15), 5781-5789, database is CAplus and MEDLINE.

Phe-Ala silanediol dipeptide mimics I as four diastereoisomers [(S,S)-, (S,R)-, (R,R)- and (R,S)-I] have been evaluated as inhibitors of angiotensin-converting enzyme (ACE) and compared to ketone-based inhibitors II reported by Almquist et al. One stereogenic center of the isomers was derived from the individual enantiomers of Me 3-hydroxy-2-methylpropionate, with separation of diastereomers after introduction of the second stereogenic center. The diastereomeric identities were established by x-ray crystallog. of an intermediate. Inhibition of ACE by (S,S)-I, (R,R)-I, (R,S)-I diastereomers (IC₅₀ = 3.8 – 207 nM) closely paralleled that of the corresponding diastereomeric ketones II (IC₅₀ = 1.0 – 46 nM). (S,R)-I, corresponding to the least inhibitory ketone (IC₅₀ = 3200 nM), exhibited an unexpected level of inhibition in the silanediol (IC₅₀ = 72 nM), suggesting an alternative mode of binding to the enzyme.

Journal of Organic Chemistry published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Safety of Difluorodiphenylsilane.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Tamao, Kohei published the artcileAnion complexation by bidentate Lewis acidic hosts, ortho-bis(fluorosilyl)benzenes, SDS of cas: 312-40-3, the publication is Journal of Organometallic Chemistry (1996), 506(1-2), 85-91, database is CAplus.

Ortho-bis(fluorosilyl)benzenes (precursors for bis-siliconates: o-C₆H₄(SiPhF₂)₂ (1), o-C₆H₄(SiF₃)(SiPh₂F) (2), o-C₆H₄(SiPhF₂)(SiPh₂F) (3)) possess anion binding properties as bidentate Lewis acidic hosts in organic solvents. Compound 1 quant. binds a F^– ion from KF suspended in acetone or THF without support of 18-crown-6 to form the corresponding soluble bis-siliconate [o-C₆H₄(SiPhF₂)₂F]K (4). The binding constants of F^– by a series of fluorosilanes were measured by ¹H and ¹⁹F NMR spectroscopies. The affinity of fluorosilanes towards F^– increases in the order PhMeSiF₂ (7)<Ph₂SiF₂ (9)<3<1<2. The fluoride ion binding constant of 2 is estimated to be K > 1.1 ¡Á 10⁹ M^-1 at 193 K. These bidentate Lewis acids 1–3 are among the strongest organic hosts for a fluoride ion in organic solvents ever reported.

Journal of Organometallic Chemistry published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C13H16O2, SDS of cas: 312-40-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Tamao, Kohei published the artcileElectronic and steric effects in pentacoordinate anionic diorganotrifluorosilicates: x-ray structures and carbon-13 NMR studies for evaluation of charge distribution in aryl groups on silicon, Quality Control of 312-40-3, the publication is Organometallics (1992), 11(1), 182-91, database is CAplus.

A series of diorganotrifluorosilicates, (4-XC₆H₄)MeSiF₃^– (I), (4-XC₆H₄)PhSiF₃^– (II), (Me_nC₆H_5-n)PhSiF₃^–, (2-MeC₆H₄)(4-MeC₆H₄)SiF₃^– (III), and (2,6-Me₂C₆H₃)(3,5-Me₂C₆H₃)SiF₃^– (IV) with the 18-crown-6 potassium countercation were prepared Mol. structures of II (X = CF₃, Me, MeO, Me₂N), III, and IV were determined by X-ray crystallog., confirming trigonal-bipyramidal structures. The dihedral angle between the substituted Ph group and the equatorial plane depends not on the electronic effect but on the steric effect. Variable-temperature ¹⁹F NMR studies on II provide the electronic effects on energy barriers for pseudorotation. In ¹³C NMR studies, all carbon chem. shifts were observed and assigned unambiguously: the Si ipso carbons of aromatic rings and the Me group were observed for the first time. Changes in chem. shifts ¦¤¦Ä(C) of anionic pentacoordinate silicates, I and II, vs. the corresponding neutral tetracoordinate silanes are +17 to +20 ppm for Si ipso (C1), +3 to +4 ppm for ortho (C2), -3 ppm for meta (C3), -4 to -7 ppm for para (C4), and +9 ppm for Me carbon. The charge distribution in the Ph groups in silicates is discussed in terms of the electron-donating nature by the SiRF₃^– group via the ¦Ð polarization effect. There are linear correlations of the chem. shifts of Si ipso C1 (para to X) in the para-substituted Ph groups and Si ipso C1′ in the parent Ph groups in II and (4-XC₆H₄)PhSiF₂ with the Hammett ¦Ò_p⁺, from which are estimated the relative electron densities on Si ipso carbons C1 and C1′.

Organometallics published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C9H7NO2, Quality Control of 312-40-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Fritsche, Hans published the artcileReduction of organic compounds of pentavalent phosphorus to phosphines. III. Preparation of primary and secondary phosphines with silanes, Safety of Difluorodiphenylsilane, the publication is Chemische Berichte (1965), 98(5), 1681-7, database is CAplus.

cf. CA 62, 10457d. Phosphonate esters and phosphinic acids and their esters or chlorides, as well as di- and monohalophosphines were reduced with organic silanes or Cl₃SiH (I) to primary and secondary phosphines, resp. BuP(O)(OEt)₂ (II) (77.6 g.) and 147.2 g. Ph₂SiH₂ (III) heated 3 hrs. under N at 150-200¡ã yielded 27 g. BuPH₂ (IV), b. 60¡ã. II (19.4 g.) and 43 g. methylpolysiloxane (V) heated with stirring 3 hrs. under N at 200¡ã and then 2 hrs. at 275¡ã gave 8 g. IV. All runs were performed under N. PhP(O)(OEt)₂ (21.4 g.) and 36.8 g. III heated 2 hrs. at 200¡ã gave 9.6 g. PhPH₂ (VI), b. 130-40¡ã. PhPCl₂ (35.8 g.) and 36.8 g. III gave similarly 18 g. VI. PhPCl₂ (35.8 g.), 30 g. I, and 22 g. Et₃N in 250 cc. C₆H₆ refluxed 2 hrs. and treated with 150 cc. 2% aqueous NaOH gave 12 g. VI, b₁₄ 60¡ã. Bu₂P(O)OH (26.7 g.) and 41.4 g. III heated 4 hrs. at 200¡ã yielded 16.8 g. Bu₂PH, b₁₄ 68-70¡ã. Bu₂P(O)Cl (19.65 g.) and 27.6 g. III heated 3 hrs. at 250¡ã gave 13.9 g. Bu₂PH, b₁₄ 70¡ã. Bu₂P(O)Cl (19.65 g.), 30 g. I, and 22 g. Et₃N in 250 cc. C₆H₆ refluxed 2 hrs. yielded 9.2 g. Bu₂PH, b₁₄ 70¡ã. 1-Hydroxy-1-oxo-3,4-dimethyl-2-phospholene (21.8 g.) and 41.4 g. III heated 4 hrs. at 150-90¡ã yielded 13.8 g. 3,4-dimethyl-2-phospholene, b. 146-8¡ã. 1-Hydroxy-1-oxo-3-methyl-2-phospholene with III gave similarly 78% 3-methyl-2-phospholene, b. 80¡ã, and 1-hydroxy-1-oxo-2-phospholene with PhSiH₃ gave 73% 2-phospholene, b. 75¡ã. 10-Hydroxy-10-oxo-2,8-dimethylphenoxaphosphine (73 g.) and 84 g. III heated 3 hrs. at 250¡ã gave 54.2 g. 2,8-dimethylphenoxaphosphine, air-sensitive crystals, m. 56¡ã (under N). Ph₂P(O)(OMe) (34.8 g.) and 41.4 g. III heated 4 hrs. at 190¡ã yielded 16.8 g. Ph₂PH, b_0.35 105-15¡ã. Ph₂P(O)OH (22 g.) in 100 cc. dry C₆H₆ refluxed 2 hrs. with 40.6 g. I and treated with 100 cc. 20% aqueous NaOH yielded 7.2 g. Ph₂PH, b_0.3 110¡ã. Ph₂P(O)Cl (23.6 g.) and 27.6 g. III during 3 hrs. at 200-50¡ã yielded 16.5 g. Ph₂PH, b_0.07 107¡ã. Ph₂PCl (44 g.) and 18.4 g. III during 2 hrs. at 200¡ã gave 23 g. Ph₂PH, b₁₄ 165¡ã. Ph₂PCl (22 g.), 15 g. I, and 11 g. Et₃N in 80 cc. C₆H₆ refluxed 2 hrs. and treated with 80 cc. 30% aqueous NaOH gave 14 g. Ph₂PH, b₁₂ 155¡ã. 2,4,6-Me₃C₆H₂MgBr from 80 g. 2,4,6-Me₃C₆H₂Br and 9.6 g. Mg in tetrahydrofuran treated dropwise with 30.5 g. POCl₃ in tetrahydrofuran, and the precipitate refluxed 0.5 hr. with alc. NaOEt, treated with 20% aqueous NaOH, and again refluxed 0.5 hr. yielded 32 g. (2,4,6-Me₃C₆H₂)₂P(O)OH (VII), m. 210¡ã (EtOH). VII (13 g.) and 12 g. III heated 3 hrs. at 300¡ã yielded 4 g. (2,4,6-Me₃C₆H₂)₂PH (VIII), b_0.1 140-60¡ã, m. 74¡ã (EtOH). Chloride (18.6 g.) of VII and 6.3 g. PhSiH₃ heated 10 hrs. at 150¡ã, treated with 10 cc. EtOH, and refluxed 1 hr. gave 10.3 g. VIII. (p-Me₂NC₆H₄)₂P(O)OH (30.6 g.) and 28 g. III heated 2 hrs. at 200-50¡ã gave 15 g. (p-Me₂NC₆H₄)₂PH, b_0.05 220-5¡ã, m. 137¡ã.

Chemische Berichte published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Safety of Difluorodiphenylsilane.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Tanaka, Toru published the artcileSynthesis of Double-Decker Silsesquioxanes from Substituted Difluorosilane, Name: Difluorodiphenylsilane, the publication is Organometallics (2019), 38(4), 743-747, database is CAplus.

A novel synthetic method for the construction of a double-decker silsesquioxane from fluorosilanes was developed. Phenyl-substituted double-decker silsesquioxane was prepared under mild conditions by coupling difluorodiphenylsilane and a tetrasiloxanolate precursor. A similar reaction was performed using difluorovinylsilane, and a divinyl double-decker silsesquioxane was obtained. The one-step reaction of a functional difluorosilane containing an aminopropyl group afforded a novel double-decker silsesquioxane with two amino groups complexed with BF₃, which can react with carboxylic acid anhydrides to afford an amide product. This synthetic method using difluorosilane is tolerant of a wide range of functional groups and is applicable to the synthesis of polycyclic silsesquioxanes bearing amino groups, which are difficult to directly obtain from dichlorosilane.

Organometallics published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C15H21BO3, Name: Difluorodiphenylsilane.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Corriu, R. J. P. published the artcileUse of antimony(V) fluoride intercalated in graphite as fluorinating reagent in organosilicon and -germanium chemistry, Product Details of C12H10F2Si, the publication is Journal of Organometallic Chemistry (1980), 192(3), 347-52, database is CAplus.

The use of SbF₅ intercalated in graphites as fluorinating reagent of organosilicon and -germanium derivatives is described. Whereas Si-O and Si-Cl bonds are readily cleaved, Si-H and Si-S bonds are only reactive in bifunctional silanes. Ge-X bonds (X = Br, Cl, OR, H) are unreactive. Allyl-silicon and allyl-germanium bonds are broken under mild conditions and in high yields, leading to the corresponding fluorosilane or fluorogermane. With bifunctional silanes, the difluorinated derivatives are always obtained.

Journal of Organometallic Chemistry published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Product Details of C12H10F2Si.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Dixon, David A. published the artcileStructural studies of tris(dialkylamino)sulfonium (TAS) fluorosilicates, Quality Control of 312-40-3, the publication is Heteroatom Chemistry (1993), 4(2-3), 287-95, database is CAplus.

The crystal structures of two pentavalent silicon anions are discussed. The structure of [SiMe₃F₂]^–?1 shows a trigonal bipyramidal structure with the fluorines in apical positions. The Si-F bond distances are the longest known of this type. The crystal structure of fluorosilicate 2 (1,1-diphenyl-1-fluoro-3,3-bis[trifluoromethyl]-1,3-dihydro-2,1-benzoxasilole[ion 1-]) is distorted toward a rectangular structure along the Berry pseudorotation coordinate. The lone Si-F bond distance in 2 is much shorter than that in 1. The ab initio calculations on a variety of pentavalent fluorinated silicon anions are reported, and good agreement with the exptl. data are found. Fluoride affinities for the fluorosilanes are reported and are in reasonable agreement with the exptl. values where known. The fluoride affinity of the tetra-coordinated species is related to the length of the Si-F bond in the pentavalent anion.

Heteroatom Chemistry published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Quality Control of 312-40-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia