0.75 h; Heating;

hydroxide in water; acetone T=20°C; various conc. of alkali; or in water in the presence of Triton X-100; Rate constantMechanism;

in dichloromethane refluxing of (C5H5)2TiCl2 in CH2Cl2 with phenylhydrazinium phenyldithiocarbazate for 8-10 h; hot filtration;; concn. in vac.; addn. of petroleum ether (60-80°C); storing overnight; crystallization; filtration; drying at 50°C for 2 h in vac.; elem. anal.;;

in dichloromethane refluxing of (C5H5)2ZrCl2 in CH2Cl2 with phenylhydrazinium phenyldithiocarbazate for 8-10 h; hot filtration;; concn. in vac.; addn. of petroleum ether (60-80°C); storing overnight; crystallization; filtration; drying at 50°C for 2 h in vac.; elem. anal.;;

in dichloromethane refluxing of (CH3C5H4)2TiCl2 in CH2Cl2 with phenylhydrazinium phenyldithiocarbazate for 8-10 h; hot filtration;; concn. in vac.; addn. of petroleum ether (60-80°C); storing overnight; crystallization; filtration; drying at 50°C for 2 h in vac.; elem. anal.;;

hydrogenchloride; sodium nitrite in chloroform

1: NaNO2, aq. HCl / CHCl3 2: aq. NH3 / ethanol View Scheme

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