(R)-(+)-3-Hydr­oxy-2-methoxy­carbonyl-8-methyl-8-azoniabicyclo­3.2.1octane l-bitartrate

摘要

(RS)-(±)-2-Methoxy­carbonyl-3-tropinone is an important inter­mediate for the preparation of cocaine and its derivatives. The molecule in the title compound, C10H16NO3 ⁺·C4H5O6 ⁻, is present as the enol tautomer. The six-membered ring adopts a half boat conformation, and the five-membered ring a slightly distorted envelope conformation. There are intra- and inter­molecular hydrogen bonds involving the hydroxyl, carboxyl groups and quaternary ammonium groups.