1: 3,4-dihydro-2H-1,4-benzothiazin-3(4H)-one With tris-(dibenzylideneacetone)dipalladium(0); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; lithium hexamethyldisilazane in tetrahydrofuran; m-xylene T=20°C; 0.166667 h; Inert atmosphere; 2: bromobenzene in tetrahydrofuran; m-xylene T=150°C; 1 h; Inert atmosphereMicrowave irradiation; Reagent/catalystTemperatureSolvent;

1: 3,4-dihydro-2H-1,4-benzothiazin-3(4H)-one With tris-(dibenzylideneacetone)dipalladium(0); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; lithium hexamethyldisilazane in tetrahydrofuran; m-xylene T=20°C; 0.166667 h; Inert atmosphere; 2: iodobenzene in tetrahydrofuran; m-xylene T=150°C; 1 h; Inert atmosphereMicrowave irradiation;

1: 3,4-dihydro-2H-1,4-benzothiazin-3(4H)-one With tris-(dibenzylideneacetone)dipalladium(0); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; lithium hexamethyldisilazane in tetrahydrofuran; m-xylene T=20°C; 0.166667 h; Inert atmosphere; 2: chlorobenzene in tetrahydrofuran; m-xylene T=150°C; 1 h; Inert atmosphereMicrowave irradiation;

sodium methylate; potassium carbonate; potassium iodide 1.) acetone, reflux, 12 h; 2.) benzene, reflux, 7 h; Yield given. Multistep reaction;

1: 2,2'-dinitrodiphenyl disulphide With samarium diiodide in tetrahydrofuran T=20°C; 0.166667 h; 2: α-Bromo-benzeneacetic acid methyl ester in tetrahydrofuran T=60°C; 4 h;

1-methyl-piperidine; 1,8-diazabicyclo[5.4.0]undec-7-ene T=180°C; P=7757.22 Torr; 4 h; microwave irradiation;

in N,N-dimethyl-formamide T=90 - 95°C; 0.25 h;

in xylene 0.666667 h; Heating;

sodium hydroxide

sodium hydride in N,N-dimethyl-formamide T=100°C; 0.333333 h;