2-chloro-5-fluorobenzonitrile

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-chloro-5-fluoro-benzonitrile (1 g, 6.43 mmol), K2CO3 (2.66 g, 19.3 mmol) and 1-methyl-piperazine (1.02 g, 10.26 mmol) in DMSO (14 ml) was stirred at 100° C. overnight and then further 1-methyl-piperazine (1.02 g, 10.26 mmol) was added. The mixture was stirred at 100° C. overnight and then partitioned between water and Et2O. The organic phase was extracted with 1 M HCl and the aqueous layer was brought to basic conditions with NH4OH and extracted with DCM. The organic phase was dried over Na2SO4 and evaporated in vacuo to give 1 g of 2-chloro-5-(4-methyl-piperazin-1-yl)-benzonitrile. The mixture was stirred at 100° C. overnight partitioned between water and Et2O The organic phase was extracted with 1 M HCl extracted with DCM The organic phase was dried over Na2SO4 evaporated in vacuo

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-chloro-5-fluoro-benzonitrile (1 g, 6.43 mmol), K2CO3 (2.66 g, 19.3 mmol) and 1-methyl-piperazine (1.02 g, 10.26 mmol) in DMSO (14 ml) was stirred at 100° C. overnight and then further 1-methyl-piperazine (1.02 g, 10.26 mmol) was added. The mixture was stirred at 100° C. overnight and then partitioned between water and Et2O. The organic phase was extracted with 1 M HCl and the aqueous layer was brought to basic conditions with NH4OH and extracted with DCM. The organic phase was dried over Na2SO4 and evaporated in vacuo to give 1 g of 2-chloro-5-(4-methyl-piperazin-1-yl)-benzonitrile. The mixture was stirred at 100° C. overnight partitioned between water and Et2O The organic phase was extracted with 1 M HCl extracted with DCM The organic phase was dried over Na2SO4 evaporated in vacuo