Chlor formic acid

This acid is not known in the free state but as the ethyl ester. As will be shown later chlor formic acid may also be considered as a derivative of carbonic acid and as this is its most important relation a fuller discussion will be deferred until carbonic acid is discussed (p. 428). 

Ethyl Chlor Formate.—The compound formed is an ethyl ester of chlor formic acid, and indicates that carbonyl chloride is the acid chloride of chlor formic acid. By further action of sodium alcoholate, however, the second chlorine atom is replaced by the ethoxy group. 

We see, therefore, that carbonyl chloride may be considered as either the mono-acid chloride of chlor formic acid or the di-acid chloride of carbonic acid, which means that carbonic acid may also be considered as hydroxy formic acid. The following formulas show this relationship... 

Wurtz Synthesis.—The introduction of carboxyl in place of a halogen in the ring may also be effected by the action of an ester of chlor formic acid and sodium. 

This is similar to the use of chlor formic acid and chloi formamide in the preceding syntheses. The method was first used by Victor Meyer. Sulphonic acids are also the starting point for the synthesis of acids through the intermediate acid nitrile as described next. 

In the preparation of chloroform the tri-chlor acet-aldehyde then reacts with an alkali present yielding chloroform and the alkali-metal salt of formic acid, as follows ... 

The next higher hydroxy acid is hydroxy acetic acid CH2(OH)— COOH, known also as glycolic acid. It may be prepared (a) from chlor acetic acid, (b) from the cyan-hydrine obtained from formic aldehyde, or (c) hy the oxidation of ethylene glycol, by reactions which have been already discussed. Its relation to ethylene glycol gives it the name of glycolic acid. It may be considered as a direct oxidation product of ethane. 

Solubility op Calcium Sulphate in Aqueous Solutions op Hydrochloric, Nitric, Chlor Acetic, and Formic Acids. 

Formic acid—Formyl chloride—Formamide—Acetic acid— Kolbe s experiments, K kul s theory, etc.—Rohland s experiments capronic, caprylic and heptylic acids, unde-cylenic and oleic acids—Acetic acid, continued—Chlor-... 

Acetone.—Acetone has been electrolyzed by Mulder, Riche, and Friedel. The electrolysis of an acetone solution acidified with sulphuric acid gave carbon dioxide, acetic acid, and formic acid. In hydrocloric acid solution mono-chlor-acetone and di chlor-acetone could be isolated in hydrobromic add. 

Beilstein Handbook Reference) AI3-19852 BRN 0385653 Carbonochloridic acid, ethyl ester Cathyl chloride Chlorameisensaureathylester Chloro-carbonate d ethyle Chlorocarbonic acid ethyl ester Chloroformic acid ethyl ester Cloroformiato de etilo ECF EINECS 208-778-5 Ethoxycarbonyl chloride Ethyl carbonochloridate Ethyl chlorocarbonate Ethyl chloro-formate Ethyl chloromethanoate Ethylchloorformiaat Ethyle, chloroformiat d Ethylester kyseliny chlor-mravenoi Etil clorooarbonato Etil cloroformiato Formic xid, chloro-, ethyl ester HSDB 409 TL 423 UN1182. Liquid mp = -80.6° bp = 95° very soluble in CeHe, EtzO. CHC13. 

---