Organic Chemistry the Fatty Compounds
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those in which the hydrogen of the alkyl groups is replaced by other atoms or radicles {e,g. chlor-acetic acid, p. 147), and those in which the OH group is displaced by such sub- stituents. We shall now consider examples of the latter class.
Acid Chlorides, Bromides, etc Acetyl Chloride^ CH3.COCI, acetic chloride^ can be obtained in a variety of ways, use being made of similar reactions to those employed in the preparation of haloid derivatives of the hydrocarbons from the alcohols; />.
by the ...action of the chlorides of phosphorus, phosphorus oxychloride, or hydrochloric acid upon the acid or its salts.
So it is produced (*i) when PCle and glacial acetic acid are distilled together — CHa-COOH + PCI5 = CH8.C0C1 + POCI3 + HCl (compare the reaction with Alcohol, p. 65). (*2) Acetyl chloride is also formed when POClg acts upon dry potassium or sodium acetate — 2CH3.COOK + POCI3 = 2CH3.COCI + KPO3 + KCl There must not be an excess of the salt, or acetic anhydride is also produced. And (*3) useful reactions for its formation are those in which PCls acts either upon an acetate or the glacial acid — 3CH8.COOK + PCI3 = 3CH3.COCI + K3PO8 3CH8.COOH + 2PCI8 = 3CH3.COCI + PaOs + 3HCI In this, as in the previous case, an excess of the salt or acid causes the production of anhydride.
What to read after Organic Chemistry the Fatty Compounds?
You can find similar books in the "Read Also" column, or choose other free books by Richard Lloyd Whiteley to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
those in which the hydrogen of the alkyl groups is replaced by other atoms or radicles {e,g. chlor-acetic acid, p. 147), and those in which the OH group is displaced by such sub- stituents. We shall now consider examples of the latter class.
Acid Chlorides, Bromides, etc Acetyl Chloride^ CH3.COCI, acetic chloride^ can be obtained in a variety of ways, use being made of similar reactions to those employed in the preparation of haloid derivatives of the hydrocarbons from the alcohols; />.
by the ...action of the chlorides of phosphorus, phosphorus oxychloride, or hydrochloric acid upon the acid or its salts.
So it is produced (*i) when PCle and glacial acetic acid are distilled together — CHa-COOH + PCI5 = CH8.C0C1 + POCI3 + HCl (compare the reaction with Alcohol, p. 65). (*2) Acetyl chloride is also formed when POClg acts upon dry potassium or sodium acetate — 2CH3.COOK + POCI3 = 2CH3.COCI + KPO3 + KCl There must not be an excess of the salt, or acetic anhydride is also produced. And (*3) useful reactions for its formation are those in which PCls acts either upon an acetate or the glacial acid — 3CH8.COOK + PCI3 = 3CH3.COCI + K3PO8 3CH8.COOH + 2PCI8 = 3CH3.COCI + PaOs + 3HCI In this, as in the previous case, an excess of the salt or acid causes the production of anhydride.
What to read after Organic Chemistry the Fatty Compounds?
You can find similar books in the "Read Also" column, or choose other free books by Richard Lloyd Whiteley to read onlineMoreLess
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