摘要 |
This invention offers a process for the synthesis of a compound of the formula wherein R' is a phenyl, a substituted phenyl, a heterocyclic aromatic group, a heterocyclic aromatic substituted group, a linear or branched alkyl group, or a cycloalkyl group. The invention also comprises the following compounds of a formula 1' and 2' as useful new synthesis intermediates. wherein R is a phenyl, a substituted phenyl, an alkyl, a cycloalkyl and X is Cl, Br, I, F, CH3SO3, p-CH3-C6H4-SO3.
|