| abstract |
A process is disclosed for the preparation of a compound of formula (I): where Ar is aryl or substituted aryl and R³ and R⁴ are the same or different and each is alkyl, which process comprises hydrogenating a compound of formula (II): wherein Ar, R³ and R⁴ are as defined with respect to formula (I) and Hal is a halogen atom.Compounds of formula (I) are useful as chemical intermediates. |