palladium dichloride in acetonitrile T=20°C; 24 h; Product distribution; Further Variations:Reaction partners;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine in tetrahydrofuran under Ar at room temp. stirring mixt. overnight; distn., t.l.c.;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine in not given at room temp. stirring mixt. for 5 h under Ar; distn. of solvent, column chromy.;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine in tetrahydrofuran 21 h; Ambient temperature;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine

2-(tert-butyl)-1,1,3,3-tetramethylguanidine; acetic anhydride; p-nitrosobenzene in tetrahydrofuran under Ar at room temp. in the dark stirring mixt. for 1 h, addn. of aq. HCl and acetic anhydride, addn. to iron powder in AcOH, heating to 100°C with distn. of THF; 3 h at 100.degree C, filtn. of ppt., treating filtrate with NaOH, washing org. phase with brine, drying, distn., t.l.c.;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine; acetic anhydride; p-nitrosobenzene in tetrahydrofuran under Ar; addn. of soln. of tosylate and PhNO to soln. of tetraphenylacetone and guanidine at room temp. in the dark, stirring for 3 h, addn. of aq. HCl and acetic anhydride, addn. to iron powder in AcOH, heating to 100°C with distn. of THF; stirring mixt. for 3 h, filtn. of ppt., treating filtrate with NaOH, washing org. phase with brine, drying, distn., t.l.c.;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine; acetic anhydride; p-nitrosobenzene in tetrahydrofuran under Ar at room temp. in the dark stirring mixt. for 1 h, addn. of aq. HCl and acetic anhydride, addn. to iron powder in AcOH, heating to 100°C with distn. of THF; 3 h at 100.degree C, filtn. of ppt., treating filtrate with NaOH, washing org. phase with brine, drying, distn., t.l.c.;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine; acetic anhydride; p-nitrosobenzene in tetrahydrofuran under Ar; addn. of soln. of tosylate and PhNO to soln. of tetraphenylacetone and guanidine at room temp. in the dark, stirring for 3 h, addn. of aq. HCl and acetic anhydride, addn. to iron powder in AcOH, heating to 100°C with distn. of THF; stirring mixt. for 3 h, filtn. of ppt., treating filtrate with NaOH, washing org. phase with brine, drying, distn., t.l.c.;

2-(tert-butyl)-1,1,3,3-tetramethylguanidine