... is a key starting material for the synthesis of the full dopamine ag- onist dihydrexidine and its derivatives.1,2 It has also been used to synthesize various aminotetralins ... Synthesis 1999, No. ... (12) Obrecht, D.; Spiegler, C.; Schoenholzer, P.; Mueller, K.; Heimgartner, H.; Stierli, F. Helv ...