triphenylphosphine


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triphenylphosphine

[trī¦fen·əl′fä‚sfēn]
(organic chemistry)
(C6H5)3P A crystalline compound with a melting point of 80.5°C; soluble in ether, benzene, chloroform, and glacial acetic acid; used as an initiator of polymerization and in organic synthesis.
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As an electronic detection canine, Browser uses his heightened sense of smell to detect triphenylphosphine oxide, a chemical baked onto computer circuits to prevent devices from overheating.
Desiccator-dried triphenylphosphine (10.5 g, 40 mmol) was dissolved in 40 ml dry anhydrous DMF in a 250 mL flask equipped with a condenser and iodine (10.1 g, 39.79 mmol) in small portions was added to this solution carefully with vigorous stirring, followed after 30 min, the freeze dried [beta]-CD (2.16 g, 1.9 mmol) was added to this dark brown solution and stirred more than 24 h at 70 AdegC under N2 atmosphere protection.
Although it was proposed by the German Research Foundation (Deutsche Forschungsgemeinschaft) [16] in 2014, this method is not particularly suited to personal sampling, and furthermore, immediately after sampling, MTS and triphenylphosphine must be added in the absorption solution.
Briefly, a solution of palladium(II) acetate [Pd[(OAc).sub.2]; 32 mg] and triphenylphosphine (PPh3 ;70 mg) in diethylamine (16 mL) was stirred under argon (Ar) for 10 min at room temperature (rt, 25[degrees]C).
Potassium carbonate ([K.sub.2]C[O.sub.3]), tetrakis(triphenylphosphine)palladium(0) [Pd[([PPh.sub.3]).sub.4]], 2,5-bis(tributylstannyl)thiophene, nitric acid (65%), and chlorobenzene (CB) were purchased from Sigma-Aldrich.
Potassium carbonate (Vetec, 99%), 6,6"-dibromo-2,2':6',2 "- terpyridine (Aldrich, 90%), 2,7-bis(4,4',5,5'-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9- bis(3-((S)-2 methylbutylpropanoate))fluorene, tetrakis(triphenylphosphine)palladium(0) (Aldrich, 99%), and sodium hydroxide (Biotec, P.
Bromoacetyl bromide, sodium azide, copper(I) bromide, copper(I) iodide, Bromotris(triphenylphosphine)copper(I), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), N,N-diisopropylethylamine (DIPEA), N,N,N',N",N"-pentamethyldiethylenetriamine (PMDTA), propargyl alcohol, 1,4-butanediol, 1,6-hexanediol, sebacoyl chloride, adipoyl chloride, succinyl chloride, lithium bromide, acetone, ethanol, acetonitrile, hexane, ethyl acetate, dichloromethane (DCM), 1,1,1,3,3,3-hexafluoroisopropanol (HFIP), trifluoroethanol (TFE), 1,3-dimethyl-2-imidazolidinone (DMI), N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMA), and Tween 20 were purchased from Sigma-Aldrich, MO, USA, and used without further purification.
Inhibitory monoclonal antibodies, such as anti-TSLP as well as antiIL-5 and IL-13, have also recently entered the market or are undergoing clinical investigation (U73122 inhibits Phospholipase C; TPPO = triphenylphosphine oxide inhibits TRMP5).
An octahedral complex of rhenium(V), ML1L2L3L4 (where L1 = oxo, L2 = chloride, L3 = triphenylphosphine, and L4 = 3-hydrazino-5,6-diphenyl-1,2,4-triazine), has shown comparable antifungal activity against Alternaria alternata and Aspergillus niger [33].
After cooling to room temperature, triphenylphosphine (0.9442 g, 3.6 mmol) was added to a solution of the anhydrous cobalt dichloride in anhydrous THF (10 mL) in dry three-necked round-bottomed flask under a nitrogen atmosphere at room temperature.
Antioxidant and reducing agent mixture (50% methanol, 25% ethanol, and 25% water with 0.9 mM butylated hydroxy toluene, 0.54 mM EDTA, 3.2 mM triphenylphosphine, and 5.6 mM indomethacin) were added to prevent degradation of preformed oxylipids and to prevent ex vivo peroxidation of lipids [23].
Similarly, n-decane fluid includes two organic-phase molecular tracers with different sizes: 1-iododecane (C[H.sub.3][(C[H.sub.2]).sub.9]I, molecular weight of 268.18 g/mol; referred as organic-I in this work} and trichlorooxobis (triphenylphosphine) rhenium(V) {[[([C.sub.6][H.sub.5]).sub.3]P]2ReO[Cl.sub.3], molecular weight 833.14 g/mol; referred as organic-Re}.