2- ethyl carbonates

The continuous production of high purity methyl or ethyl carbonate from the alcohol and chloroformates has been patented (80). Chloroformate and alcohol are fed continuously into a Raschig ting-packed column in which a temperature gradient of 72—127°C is maintained between base and head of the column HCl is withdrawn at the head, and carbonate (99%) is withdrawn at the base. 

Inorganic compounds Monosodium phosphate mixed with boric acid and ethyl carbonate, disodium phosphate sodium aliiminate, bentonite and other solids Distillation instant coffee boiler feedwater sugar extraction... 

An ethyl carbonate, prepared and cleaved by conditions similar to those described for a methyl carbonate, was used to protect a hydroxyl group in glucose. ... 

Trimethylsilyl) ethyl Carbonate (TMSEC) Me3SiCH2CH20C02R Formation... 

An ethyl carbonate was cleaved by refluxing in acetic acid for h. 

The Teoc group is introduced onto pyrroles, or indoles with 4-nitrophenyl 2-(tri-methylsilyl)ethyl carbonate and NaH in 61-64% yield. The Teoc group can be removed with Bu4N F in CH3CN. ... 

Ethyl M-butylcyanoacetate has been prepared by alkylation of the sodium enolate of ethyl cyanoacetate with butyl bromide and by condensation of capronitrile with ethyl carbonate, in addition to the method given above. ... 

The electrolyte used is 1 molar LiPF dissolved in a mixture of 30% ethyl carbonate (EC) and 70% diethyl carbonate (DEC) by volume. This electrolyte IS easy to use because it will self-wet the separator and eleetrodes at atmospheric pressure. The electrolyte is kept under an argon atmosphere in the glove-box. The moleeules of electrolyte solvents, like EC and DEC, have in-plane dimensions of about (4 A x 5 A) to (6 A x 7 A). These molecules are normally larger than the openings of the micropores formed in the region 3 carbons (Fig. 2) as described in section 5. 

Chemical Designations - Synonyms Carbonic Acid Diethyl Ester Ethyl Carbonate Eufin Chemical Formula (CH3CH2)2C03. 

The reactivity of various steroid alcohols decreases in the order primary > secondary (equatorial) > secondary (axial) > tertiary. The only systematic investigation relating to the selective protection of steroidal hydroxyl functions has been carried out with the cathylate (ethyl carbonate) group. Since only equatorial hydroxyl groups form cathylates this ester has been used as a diagnostic tool to elucidate the configuration of secondary alcohols. 

Alkyl 2-(Phenylsulfonyl)ethyl Carbonate (Psec-OR) PhS02CH2CH20C02R Formation... 

DMAP, THF, 65% yield. This reaction is selective for primary alcohols. Benzyl, isobutyl, and ethyl carbonates are also prepared using this method (63-85% yield). 

The thenyl cyanides are of great importance for the preparation of thiophene derivatives. Because of the acidifying effects of both the thienyl and of the cyano groups, carbanions are easily obtained through the reaction with sodamide or sodium ethoxide, which can be alkylated with halides, carbethoxylated with ethyl carbonate, or acylated by Claisen condensation with ethyl... 

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