Anhydrous Alcohol

Alcohols Anhydrous potassium carbonate anhydrous magnesium or calcium sulphate quicklime. 

Triphenylmethyl thioethers have been formed by reaction of the thiol with tri-phenylmethyl alcohol/anhydrous CF3COOH (85-90% yield) or with triphenyl-methyl chloride (75% yield). 

Toluene, dichloromethane, acetic acid, ammonium hydroxide, concentrated H2SO4, 5 N NaOH and 37% HCI were purchased from Mallinckrodt Inc. tetrahydrofuran, tert-butyl alcohol, anhydrous Na2S04, and NaCI were purchased from EM Science potassium tert-butoxide was purchased from Aldrich Chemical Company, Inc. hexanes was purchased from Baxter, and dry O2 was purchased from Air Products. All these reagents were used as received. 

Method B with tertian alcohols Anhydrous Na2CO, (30 g) is added to the alcohol (0.1 mol) and TEBA-CI (2.3 g, 10 mmol) in CH,C12 (50 ml), followed by the acid chloride (0.1 mol). The stirred mixture is refluxed for ca. 3 h and then filtered. The residue is extracted with CH2C12 (10 ml) and the combined organic solution is washed well with H,0 until neutral, dried (CaS04), and fractionally distilled. 

Remember the ethyl alcohol — water azeotrope You might be thinking If I cannot distill the water out and I want my alcohol anhydrous (dry), because the water will kill my yield, what should I do You need to dry. Sometimes you will have to dry reagents, sometimes solvents, and sometimes the products themselves. 

Dehydration of alcohols. Anhydrous CuS04 is recommended as a general cnlnlysl for Ihis reaction.1... 

Alcohol, Aldehyde-Free, 849 Alcohol, Anhydrous, 849 Alcohol, Dehydrated, 849 Alcohol, Diluted, 849 Alcohol, 70%, 849 Alcohol, 80%, 849 Alcohol, 90%, 849 Alcohol C-6, 506, (S3)76 Alcohol C-8, 542 Alcohol C-9, 540 Alcohol C-10,476 Alcohol C-l 1,562 Alcohol C-12,518... 

Atrovent HFA (BI) Ipratropium bromide November 2004 HFA 134a, purified water, dehydrated alcohol, anhydrous citric acid Solution... 

Ethyl acetoacetate, 20, 26 21, 23, 46,67 Ethyl acrylate, 20, 36 Ethyl alcohol, anhydrous, 22, 59 Ethyl benzoate, 20, 32 Ethyl bromide, 22, 59 Ethyl bromoacetate, 21, 51 Ethyl a-bromoisobutyrate, 21, 53 Ethyl /3-bromopropionate, 20, 6S Ethyl caprylate, 20, 69 Ethyl chlorocarbonate, 21, 81 2-Ethylchromone, 21, 42 Ethyl diacetylacetate, 21, 46 COPPER DERIVATIVE, 21, 45 Ethyl a,a-DIMETHYL-/3-PHENYL-/3-HY-DROXYPROPIONATE, 21, S3 Ethylene chloride, 20, 28 22, 76 Ethyl 1,16-hexadecanedicarboxy-late, 21, 48... 

Hg [212], is prepared from tert-butyl hydrogen sulfate and 27% hydrogen peroxide [212] and is commercially available as a 70 or 90% solution containing water and tert-butyl alcohol. Anhydrous rert-butyl hydroperoxide is obtained from the 70% aqueous solution by azeotropic distillation with toluene [213]. Anhydrous, as well as highly concentrated, tert-bvXy hydroperoxide must be handled with utmost care, because it may decompose violently in the presence of strong acids and some transition metals, especially manganese, iron, and cobalt [213, 214],... 

Synonyms absolute alcohol anhydrous ethanol ethanol. 

Absolute Alcohol.—Anhydrous alcohol is prepared by digesting 95 percent, spirit with about oiiefourth or one-fifth of its weight of quicldime for some days, and then distilling ofi the alcohol slowly from a water bath rejecting the first and last portions the resulting product is then treated again in the same way. 

Triphenylmethyl thioethers have been formed by reaction of the thiol with triphenylmethyl alcohol/anhydrous CF3COOH (85-90% yield) or with tri-phenylmethyl chloride (75% yield). Glycosidic triphenylmethyl thioethers are prepared by displacement of the chloride with TrSN(Bu)4 (tetrabutylammo-nium triphenylmethanethiolate), or simply TrSH in the presence of NaOMe/ MeOH (100% yield). ... 

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