Victor Von Richters Organic Chemistry Or Chemistry of the Carbon Compounds V
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CO 2 H, corresponds to Glyoxylic Acid, CHO . CO 2 H Trichloracetic Acid, CC1 3 . CO 2 H, corresponds to Oxalic Acid, CO 2 H . CO 2 H. Monochloracetic Acid, CH 2 C1 . CO 2 H, melts at 62 and boils at 185-187. After fusion it solidifies to an unstable modification, melting at 52. This slowly reverts spontaneously to the ordinary acid (B. 26, R. 381). Its sodium and silver salts, on the application of heat, yield polyglycolide. When monochloracetic acid is heated with alkalies or water, the chlori...ne is replaced by the hydroxyl group, and we get oxyacetic acid or glycollic acid (C 2 H 3 (OH)O 2 ). Amido-acetic acid, CH 2 (NH 2 ) . CO 2 H, or glycocoll, results when the monochloracid is digested with ammonia. The ethyl ester boils at 143. 5. The chloride boils at 106 ; the bromide, at 127 ; the anhydride melts at 46 and boils at lio (II mm. ) (B. 27, 2949); the amide melts at 116 and boils at 224- 225 ; the nitrile boils at 124. Dichloracetic Acid, CHC1 2 . CO 2 H, is produced when chloral is heated with CNK or potassium ferrocyanide and some water.
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