1,3-thiazinane-2-thione

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

Procedure: A mixture of 66.5 g. of tetrahydro-1,3-thiazin-2-thione and 83 g. of 1-bromo-3-chloropropane in 200 ml. of ethanol is refluxed for 24 hours. The solvent is removed under vacuum and the residue triturated with ether, then acetone. The product is recrystallized from ethanol yielding 2,3,6,7-tetrahydro-(1,3)-thiazino-[2,3-b]-(1,3)-thiazinium bromide. A mixture of 66.5 g The solvent is removed under vacuum the residue triturated with ether The product is recrystallized from ethanol

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

Procedure: A mixture of 66.5 g. of tetrahydro-1,3-thiazin-2-thione and 83 g. of 1-bromo-3-chloropropane in 200 ml. of ethanol is refluxed for 24 hours. The solvent is removed under vacuum and the residue triturated with ether, then acetone. The product is recrystallized from ethanol yielding 2,3,6,7-tetrahydro-(1,3)-thiazino-[2,3-b]-(1,3)-thiazinium bromide. A mixture of 66.5 g The solvent is removed under vacuum the residue triturated with ether The product is recrystallized from ethanol

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

Procedure: A mixture of 66.5 g. of tetrahydro-1,3-thiazin-2-thione and 83 g. of 1-bromo-3-chloropropane in 200 ml. of ethanol is refluxed for 24 hours. The solvent is removed under vacuum and the residue triturated with ether, then acetone. The product is recrystallized from ethanol yielding 2,3,6,7-tetrahydro-(1,3)-thiazino-[2,3-b]-(1,3)-thiazinium bromide. A mixture of 66.5 g The solvent is removed under vacuum the residue triturated with ether The product is recrystallized from ethanol

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

Procedure: A mixture of 66.5 g. of tetrahydro-1,3-thiazin-2-thione and 83 g. of 1-bromo-3-chloropropane in 200 ml. of ethanol is refluxed for 24 hours. The solvent is removed under vacuum and the residue triturated with ether, then acetone. The product is recrystallized from ethanol yielding 2,3,6,7-tetrahydro-(1,3)-thiazino-[2,3-b]-(1,3)-thiazinium bromide. A mixture of 66.5 g The solvent is removed under vacuum the residue triturated with ether The product is recrystallized from ethanol