Sodium boron fluoride

Apreton R Borate(l-), tetrafluoro-, sodium Boron sodium fluoride (BNaF4) EINECS 237-340-6 NSC 77386 Pyricit Sodium borofluoride Sodium boron fluoride Sodium boron tetrafluoride Sodium fiuoborate Sodium fluoborate (Na(BF4 Sodium fluoroborate (NaBF4) Sodium tetrafluoroborate Sodium tetrafluoroborate 1-). Used as a fluorinating agent. Rectangular prisms mp = 384° = 2.4700 soluble in H2O (108 g/100 ml), less... [Pg.564]

Acetylcyclohexanone. Method A. Place a mixture of 24-6 g. of cyclohexanone (regenerated from the bisulphite compound) and 61 g. (47 5 ml.) of A.R. acetic anhydride in a 500 ml. three-necked flask, fitted with an efficient sealed stirrer, a gas inlet tube reaching to within 1-2 cm. of the surface of the liquid combined with a thermometer immersed in the liquid (compare Fig. II, 7, 12, 6), and (in the third neck) a gas outlet tube leading to an alkali or water trap (Fig. II, 8, 1). Immerse the flask in a bath of Dry Ice - acetone, stir the mixture vigorously and pass commercial boron trifluoride (via an empty wash bottle and then through 95 per cent, sulphuric acid) as fast as possible (10-20 minutes) until the mixture, kept at 0-10°, is saturated (copious evolution of white fumes when the outlet tube is disconnected from the trap). Replace the Dry Ice-acetone bath by an ice bath and pass the gas in at a slower rate to ensure maximum absorption. Stir for 3 6 hours whilst allowing the ice bath to attain room temperature slowly. Pour the reaction mixture into a solution of 136 g. of hydrated sodium acetate in 250 ml. of water, reflux for 60 minutes (or until the boron fluoride complexes are hydrolysed), cool in ice and extract with three 50 ml. portions of petroleum ether, b.p. 40-60° (1), wash the combined extracts free of acid with sodium bicarbonate solution, dry over anhydrous calcium sulphate, remove the solvent by... [Pg.864]

Note that acetic acid is eliminated during the reaction. What effect would sodium acetate have How might boron fluoride etherate or sulfuric acid affect the nucleophilic attack of the phenolic oxygen on acetic anhydride With what might the base, pyridine, associate ... [Pg.272]

The catalytic activity of hydrogen chloride was found by Tarbell and Kincaid 34g). Continuing this work, Tarbell et al. 36) showed that certain acids and bases affect the yields of urethanes obtained from a-naphthyl isocyanate and phenols. Thus, catalytic effects were observed with sodium carbonate and acetate, pyridine, triethylamine, acetic acid, trichloroacetic acid, zinc chloride, hydrogen chloride, and boron fluoride etherate. The latter catalyst and triethylamine were found to be the most effective acidic and basic catalysts, respectively. [Pg.409]

Methylation Diazomethane-Boron fluoride etherale. Dimethylcopperlithium. Dimethyl-sulfonium methylide. Iodine Methyl iodide. Methyl-(tri-n-butylphosphine) copper complex. Silver perchlorate. Simmons-Smith reagent. Sodium hydride. [Pg.242]

The 3a-tropanol 0-riboside (23) has been prepared by trans-glycosylation of the amino-alcohol with l-0-acetyl-2,3,5-tribenzoyl-ribofuranose, catalysed by boron fluoride etherate, followed by Zemplen deacylation in methanol, with sodium methoxide as a catalyst. [Pg.61]

Sodium tetrahydridoborate boron fluoride Methylene from keto groups... [Pg.32]

Sodium tetrahydridob orate boron fluoride Arenes from quinones s. 16, 90... [Pg.42]

Sodium tetrahydridoborate/boron fluoride Borazines from nitriles by trimerization l-Oxa-2,6-disilacyclohexane derivatives... [Pg.117]

Sodium tetrahydridoborate/boron fluoride Thioethers from ethers and mercaptans s. 18,662... [Pg.200]

Boron fluoride sodium tetrahydridoborate Alcohols from ethylene derivatives... [Pg.446]

Sodium tetrahydridoborate/boron fluoride Hydroxythioethers from cyclic ethers and mercaptans... [Pg.574]

Di(isopinocampheyl)borane Resolution of racemic ethylene derivatives with optically active boranes s. 19, 720 Lithium tetrahydridoborate s. under (C2H )gN,HCl Sodium tetrahydridoborate/boron fluoride Boranes from ethylene derivatives s. 16, 753... [Pg.590]

Boron fluoride I sodium tetrahydridob orate BFgINa[BHJ... [Pg.45]

Sodium boron hydride/boron fluoride Selective reduction... [Pg.45]

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