in benzene addn. of the cyclopropane in benzene to the Ni compd. in benzene and keeping at 22°C for 24 h (Ar), addn. of ether, ppt. (allyl complex) is filtered off, washed (ether) and dried (vac.); concn., evapn. of the mother liquors and washings, treating with ether, filtn., washing with ether and drying (vac.) yields Ni(PPh3)3; elem. anal.;

titanium(IV) isopropylate; (phenylpropargyl)magnesium bromide in diethyl ether T=20°C; Reduction; 18 h; Product distribution; Further Variations:reaction time;

18-crown-6 ether; potassium tert-butylate in tetrahydrofuran T=30°C; 18 h;