... carbazole-, diphenylamine-, phenothiazine in the presence of catalytic amounts of Pd(PPh3)4 in a two-phases system (toluene/2M K2CO3 in volume ratio 2 ... S(10)-C(9), 103.33 (9); C(4)-S(5)-C(5), 103.25 (10); C(9)-C(8)-C(28), 121.15 (2); b/ example ... ARKIVOC 2012 (iii) 193- ...