in diethyl ether N2-atmosphere; addn. of 2 equiv. dithiol to B-compd. at 0°C, standing for 5 min; dropwise addn. of excess 1 M HCl in Et2O, stirring for 24 h, solvent removal (vac.), extn. into PhMe, filtration (Celite), crystn. (5°C, 12 h); elem. anal.;

1: HCl / tetrahydrofuran; diethyl ether 2: HCl / tetrahydrofuran View Scheme

1: toluene 2: HCl / tetrahydrofuran; diethyl ether 3: HCl / tetrahydrofuran View Scheme

1: HCl / diethyl ether 2: HCl / tetrahydrofuran View Scheme

1: HCl / toluene; diethyl ether 2: HCl / tetrahydrofuran View Scheme

HCl in tetrahydrofuran

HCl in tetrahydrofuran

in benzene under inert gas; a suspension of the Na-salt of 1,2-benzodithiol was heated to 75°C; B2(NMe2)2Cl2 was added under stirring; 14 h; insoluble residue was removed; crystals from the filtrate were isolated and washed with pentane; further compounds were isolated by distillation and sublimation of the residue; elem. anal., mass spectroscopy;