Wo-Propyl alcohol

Prehydrolysis method. The Si source (TEOS) in dry wo-propyl alcohol is hydrolyzed with 20% aqueous TPAOH prior to addition of Ti source, Ti(OBu)4. Gel composition SiO2 vTiO2 0.36-TPA 35H20 (x — 0-0.10) the synthesis time is reduced considerably (1-5 days at 433 K compared to 6-30 days at 448 K, as reported in the original patent (5))... 

Lactic acid wo- Propyl alcohol iso-Propyl lactate... 

Diazomethane (rs, 3 Ciazomethane and its homologs are prq>ared by the action of sodium fju-propoxide in wo-propyl alcohol upon the products of nitrosation from /9-alkylamino-iso-butyl methyl ketones (obtained by adding the amine to mesityl oxide). Adamson and Kenner, J. Chem. Soc. 1935, 286. 

Aliphatic alcohols Methanol, ethanol, wo-propyl alcohol, glucose, sucrose... 

The inflammable solvents most frequently used for reaction media, extraction or recrystallisation are diethyl ether, petroleum ether (b.p. 40-60° and higher ranges), carbon disulphide, acetone, methyl and ethyl alcohols, di-wo-propyl ether, benzene, and toluene. Special precautions must be taken in handling these (and other equivalent) solvents if the danger of fire is to be more or less completely eliminated. It is advisable to have, if possible, a spedal bench in the laboratory devoted entirely to the recovery or distillation of these solvents no flames are permitted on this bench. 

Isoflurophate Isoflurophate, the di-wo-propyl ester of fluorophosphoric acid (13.2.21), is made by reacting Mo-propyl alcohol with phosphorous trichloride, forming di-wo-propy-Iphosphite (13.2.19), which is chlorinated to (13.2.20), and further reacted with sodium fluoride to replace the chlorine atom with fluorine, thus giving isofluorophate (13.2.21) [50]. 

Trimethylethylene dibromide has been obtained by adding bromine to trimethylethylene 1 and to tertiary amyl alcohol.2 Methyl wo-propyl ketone has been prepared by heating trimethylethylene glycol (2-methyl-2,3-dihydroxybutane) with dilute hydrochloric acid,3 by heating trimethylethylene chloro-hydrin (2-methyl-2-hydroxy-3-chlorobutane) in a sealed tube with water,4 by boiling trimethylethylene dibromide with lead oxide (PbO) and water,5 by heating trimethylethylene dibromide with water,6 by the action of iso-propylmagnesium bromide on acetic anhydride,7 and by a variety of other methods not particularly related to the one here described.8... 

Summary The use of readily available norbornylsilanes as protecting groups for alcohols and diols is reported. Stabilities of exemplary norbomylsilyl compounds toward various reagents and deprotection conditions are compared with ter+butyldimethylsilyl-, iso-propyldimethyl, and trimethylsilyl groups. The norbomyl-substituted compounds have been found to be more stable than the corresponding wo-propyl derivatives. 

Figure 5.1 (c) On (i) polar and (ii) non-polar capillary WCOT columns illustrating like attracts like polar/non-polar retention properties and two column analysis to confirm components present. Toluene is used as the reference marker. 1, Methyl alcohol 2, ethyl alcohol 3, isopropyl alcohol 4, n-propyl alcohol 5, wo-butyl alcohol 6, iec-butyl alcohol 7, rert-butyl alcohol 8, n-butyl alcohol 9, toluene (reference marker). Polar column Carbowax 20M (25m X 0.32, 0.25 pm film). Non-polar column HP-1, dimethylsiloxane (25m x 0.32, 0.25 pm film). Both columns carrier gas He 1ml min injection 0.5 pi split 20 1 detector FID column temperature programmed 50-200°C at 5°C min. ... 

Activity and selectivity of natural (pure and dealuminated clinoptilolite and mordenite) and A synthetic zeolites modified with cations of the transition metals (Cu, Co ", Cr, Zn and Pd ) have been tested in vapor phase oxidation of wo-propyl and -propyl alcohols. The efficient catalyst, CuPdH-mordenite has been selected for the oxidation of iso-propyl alcohol to acetone. It has been shown that this catalyst is not efficient in the oxidation of n-propyl alcohol. The catalyst prepared from A synthetic zeolites and containing Pd " and Cu shows the highest activity in this reaction. 

F) Preparation and Testing of Candidate Structures. Suitable candidate structures were then examined for relative efficacy in the mobilization of lead from lead-loaded mice. On the basis of previous studies in which we examined the relative ability of many compounds to remove cadmium from its aged deposits in the liver and the kidneys, six vicinal dithiols were selected, which were all monoesters of meso-2,3-dimercaptosuccinic acid. The compounds selected were the mono esters of meso- 2,3-dimercaptosuccinic acid with the following alcohols n-propyl, wo-propyl, n-butyl, wo-butyl, n-amyl, and iso-dmy (Figure 3). The results of experiments comparing these compounds showed that the n-butyl, iso-butyl, n-amyl, and isoamyl monoesters of m j<>-2,3-dimercaptosuccinic acid were the most effective compounds and that all were capable of reducing both kidney and brain lead levels in lead-intoxicated mice (45). The data collected on lead-intoxicated mice treated with the most effective of such compounds are compared with the results obtained with DMSA in Table I. 

The above is a general procedure for preparing trialkyl orthophosphates. Similar yields are obtained for trimethyl phosphate, b.p. 62°/5 mm. triethyl phosphate, b.p. 75-5°/5 mm. tri-n-propyl phosphate, b.p. 107-5°/5 mm. tri-Mo-propyl phosphate, b.p. 83-5°/5 mm. tri-wo-butyl phosphate, b.p. 117°/5-5 mm. and tri- -amyl phosphate, b.p. 167-5°/5 mm. The alkyl phosphates are excellent alkylating agents for primary aromatic amines (see Section IV,41) they can also be ua for alkylating phenols (compare Sections IV,104-105). Trimethyl phosphate also finds application as a methylating agent for aliphatie alcohols (compare Section 111,58). 

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