in toluene CHCC6H4C6H4CHC(CH3)2, CH3CW(CO)4Br and toluene were combined, degassed and sealed in glass, 2d at room temp.; chromatographie on silica gel, 1H-NMR;

in dichloromethane Wittig olefination;

(i) Mg, THF, (ii) /BRN= 605330/, (iii) P2O5, benzene; Multistep reaction;