3-bromo-1,1-diphenylpropan-2-one

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a filtered solution of 1.32 g. of 1,3-diethyl-2-thiourea in 25 ml. of acetone is added a filtered solution of 3-bromo-1,1-diphenyl-2-propanone in 25 ml. of acetone. The mixture is allowed to stand, then the solid is collected by filtration, washed with acetone and dried in vacuo, giving 3.73 g. of the desired product, m.p. 174°-176° C. (dec.). the solid is collected by filtration washed with acetone dried in vacuo giving 3.73 g

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

Procedure: A 1.48 g. portion of 1-tert.-butyl-3-methyl-2-thiourea in 75 ml. of acetone is treated with a clarified solution of 2.89 g. of 3-bromo-1,1-diphenyl-2-propanone in 75 ml. of acetone. The mixture is stirred at room temperature for 17 hours. The solid is collected by filtration, washed with acetone and dried at 60° C. in vacuo, giving 2.8 g. of the desired product, m.p. 170°-172° C. (dec.). The solid is collected by filtration washed with acetone dried at 60° C. in vacuo giving 2.8 g

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

Procedure: 1-Bromo-3,3-diphenyl-2-propanone is reacted with hexahydro-1,3-diazocin-2(1H)-thione by the procedure of Example 22, giving the desired product, m.p. 211°-213° C. (dec.).

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

Procedure: 1-Bromo-3,3-diphenyl-2-propanone is reacted with hexahydro-1,3-diazocin-2(1H)-thione by the procedure of Example 22, giving the desired product, m.p. 211°-213° C. (dec.).

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

Procedure: This 1-bromo-3,3-diphenyl-2-propanone is dissolved in 50 ml. of acetone and added to a warm solution of 1.28 g. of 1,3,4,7-tetrahydro-2H-1,3-diazepin-2-thione in 100 ml. of acetone. The reaction mixture is warmed, with stirring, for 3 hours and then stirred for 72 hours. The mixture is cooled and the resulting solid is collected by filtration, giving the desired product. The reaction mixture is warmed stirred for 72 hours The mixture is cooled the resulting solid is collected by filtration

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

Procedure: A 2.1 g. portion of 1,1-diphenyl-2-propanone is converted to 1-bromo-3,3-diphenyl-2-propanone as described in Example 22. This 1-bromo-3,3-diphenyl-2-propanone is dissolved in 15 ml. of acetone and added to a boiling mixture of 1.0 g. of tetrahydro-5,5-dimethyl-2(1H)-pyrimidinethione in 50 ml. of acetone. The mixture is allowed to stand at room temperature for 24 hours and the resulting solid is collected by filtration, giving the desired product, m.p. 259°-261° C. the resulting solid is collected by filtration

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

Procedure: A 2.1 g. portion of 1,1-diphenyl-2-propanone is converted to 1-bromo-3,3-diphenyl-2-propanone as described in Example 22. This 1-bromo-3,3-diphenyl-2-propanone is dissolved in 15 ml. of acetone and added to a boiling mixture of 1.0 g. of tetrahydro-5,5-dimethyl-2(1H)-pyrimidinethione in 50 ml. of acetone. The mixture is allowed to stand at room temperature for 24 hours and the resulting solid is collected by filtration, giving the desired product, m.p. 259°-261° C. the resulting solid is collected by filtration

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

Procedure: A 2.1 g. portion of 1,1-diphenyl-2-propanone is converted to 1-bromo-3,3-diphenyl-2-propanone by the procedure of Example 22. The 1-bromo-3,3-diphenyl-2-propanone is dissolved in 15 ml. of acetone and added to a boiling mixture of 0.80 g. of tetrahydro-2-pyrimidinethione in 70 ml. of acetone. This mixture is allowed to stand for 48 hours and the resulting solid is collected by filtration, giving the desired product, m.p. 196°-198° C. the resulting solid is collected by filtration

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

Procedure: A solution of 4.20 g. of 1,1-diphenyl-2-propanone in 25 ml. of acetic acid is heated at 60°-70° C. and 1.0 ml. of bromine in 8 ml. of acetic acid is added dropwise. The reaction mixture is held at 60°-70° C. for one hour and then poured into ice. Toluene is added. The toluene layer is separated, washed with water, dried over magnesium sulfate and concentrated to obtain 1-bromo-3,3-diphenyl-2-propanone. poured into ice The toluene layer is separated washed with water dried over magnesium sulfate concentrated

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

Procedure: A solution of 4.20 g. of 1,1-diphenyl-2-propanone in 25 ml. of acetic acid is heated at 60°-70° C. and 1.0 ml. of bromine in 8 ml. of acetic acid is added dropwise. The reaction mixture is held at 60°-70° C. for one hour and then poured into ice. Toluene is added. The toluene layer is separated, washed with water, dried over magnesium sulfate and concentrated to obtain 1-bromo-3,3-diphenyl-2-propanone. poured into ice The toluene layer is separated washed with water dried over magnesium sulfate concentrated