Telomerization of Vinyl Chloride with Chloroform Initiated by Ferrous Chloride-Dimethylacetamide under Ultrasonic Conditions

Table 1

Effects of catalyst systems^a.

Entry	Initiator	Solvents	Conversion^b (%)	Yield^b (%)
1	FeCl2·4H2O, (HOCH2CH2)3N	MeOH^c	73.4	5.7
2	CuCl·2H2O, (HOCH2CH2)3N	CH3CN	11.4	8.7
3	FeCl2·4H2O, (HOCH2CH2)3N	CH3CN	22.1	18.3
4	FeCl2·4H2O, (HOCH2CH2)3N	DMF	35.9	24.6
5	FeCl2·4H2O, (HOCH2CH2)3N	DMSO	40.5	28.0
6	FeCl2·4H2O, (HOCH2CH2)3N	DAMC	67.7	40.5
7	FeCl2·4H2O	DAMC	64.7	42.1

The molar ratio of vinyl chloride, chloroform, catalysts, and solvent is 1 : 4 : 0.02 : 0.2, respectively; reaction time 30 h; temperature 130°C; initial pressure 0.3 MPa.
^bIt is calculated by vinyl chloride. ^cMethanol is the same molar amount as chloroform.