It is the carboxylic acid corresponding to tropine, for it yields the same products on oxidation, and by treatment with phosphorus pentachloride is converted into anhydroecgonine, C9H13N02, which, when heated to 280° C. with hydrochloric acid, splits out carbon dioxide and yields tropidine, C8H13N.
The above compounds may be represented as: CH 2 -CH--CH COOH CH 2 -CH-CH'COOH CH2-CH-CH'COOH N'CH3 CH'OH I N 'CH3 C H N CH3 CH2 CH 2 -CH-CH 2 CH2-CH---CH CH2 - C H-CH2 Ecgonine Anhydroecgonine Hydroecgonidine
Anhydroecgonine melts at 235° C., and has an acid and a basic character.
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