2,2'-Dithiodibenzoyl chloride

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

Procedure: Following the procedure in Preparation 30, 16 g (0.15 mol) of 4-amino-butanoic acid was reacted with 10.8 g (0.03 mol) of 2,2'-dithiobisbenzoyl chloride to afford 7.14 g of the title compound.

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

Procedure: Using the method employed in Preparation 30, 17.8 g (0.15 mol) of D,L valine was reacted with 17.2 g (0.05 mol) of 2,2'-dithiobisbenzoyl chloride to produce 11.4 g of the title compound after recrystallization from acetic acid, mp 226.5-227.5° C.

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

Procedure: Following the procedure in Preparation 30, 16 g (0.15 mol) of 4-amino-butanoic acid was reacted with 10.8 g (0.03 mol) of 2,2'-dithiobisbenzoyl chloride to afford 7.14 g of the title compound.

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

Procedure: Following the procedure in Preparation 30, 16 g (0.15 mol) of 4-amino-butanoic acid was reacted with 10.8 g (0.03 mol) of 2,2'-dithiobisbenzoyl chloride to afford 7.14 g of the title compound.

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

Procedure: Using the method employed in Preparation 30, 17.8 g (0.15 mol) of D,L valine was reacted with 17.2 g (0.05 mol) of 2,2'-dithiobisbenzoyl chloride to produce 11.4 g of the title compound after recrystallization from acetic acid, mp 226.5-227.5° C.

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

Procedure: The compound was prepared according to the general method of Preparation 9 using 2,2'-dithiobisbenzoyl chloride (3.0 g, 8.0 mmol) in 30 mL of dichloromethane and 4-[(acetylamino)sulfonyl]aniline (5.6 g, 26.0 mmol) in 100 mL of pyridine. The crude product was purified on a silica gel column using chloroform/methanol (1:1 v/v) as the mobile phase. The pure fractions were pooled, concentrated in vacuo, and the solid was crystallized from ethanol/water (1:1 v/v) to yield 0.5 g of the title compound, mp 180-182° C. The compound was prepared The crude product was purified on a silica gel column concentrated in vacuo the solid was crystallized from ethanol/water (1:1 v/v)

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

Procedure: The compound was prepared according to the general method of Preparation 9 using 2,2'-dithiobisbenzoyl chloride (3.0 g, 8.0 mmol) in 30 mL of dichloromethane and 4-[(acetylamino)sulfonyl]aniline (5.6 g, 26.0 mmol) in 100 mL of pyridine. The crude product was purified on a silica gel column using chloroform/methanol (1:1 v/v) as the mobile phase. The pure fractions were pooled, concentrated in vacuo, and the solid was crystallized from ethanol/water (1:1 v/v) to yield 0.5 g of the title compound, mp 180-182° C. The compound was prepared The crude product was purified on a silica gel column concentrated in vacuo the solid was crystallized from ethanol/water (1:1 v/v)

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

Procedure: Isonipecotic acid (4-piperidinecarboxylic acid) (0.76 g, 6 mmol), N-methyl-N-trimethylsilylacetamide and 3 drops of pyridine were stirred at room temperature for 2 hours. This suspension was added to a filtered solution of 2,2'-dithiobisbenzoyl chloride (1.0 g, 3.0 mmol) in 15 mL of dichloromethane. The solvent was removed after 18 hours and the residue was triturated with 1N HCl. The acid was decanted and the residue was dissolved in acetonitrile. After standing for 24 hours a precipitate formed. The solid was collected and dried to give 0.56 g of the title compound, mp >250° C.; The solvent was removed after 18 hours the residue was triturated with 1N HCl The acid was decanted the residue was dissolved in acetonitrile a precipitate formed The solid was collected dried

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

Procedure: This compound was prepared according to the general method of Example 112 using 2,2'-dithiobisbenzoyl chloride (1.0 g, 3.0 mmol) in 15 mL of dichloromethane and pyrrolidine (0.63 mL, 7.5 mmol) and triethylamine (1.2 mL, 9 mmol) in 20 mL of dichloromethane, to give 0.75 g of the title compound as a foam, mp 62-63° C.; This compound was prepared

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

Procedure: A solution of 2,2'-dithiobisbenzoyl chloride (1.0 g, 3.0 mmol) in 20 mL of dichloromethane was added dropwise to a solution of cyclopropylamine (0.52 mL, 7.5 mmol) and triethylamine (1.2 mL, 9.0 mmol) in 20 mL of dichloromethane. A solid formed immediately, the mixture was stirred for 3 hours and then filtered. The solid was dried to yield 0.65 g of the title compound, mp 257-259° C.; A solid formed immediately filtered The solid was dried

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

Procedure: A solution of 2,2'-dithiobisbenzoyl chloride (1.0 g, 3.0 mmol) in 20 mL of dichloromethane was added dropwise to a solution of cyclopropylamine (0.52 mL, 7.5 mmol) and triethylamine (1.2 mL, 9.0 mmol) in 20 mL of dichloromethane. A solid formed immediately, the mixture was stirred for 3 hours and then filtered. The solid was dried to yield 0.65 g of the title compound, mp 257-259° C.; A solid formed immediately filtered The solid was dried

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

Procedure: This compound was prepared according to the general method of Example 77 using 2,2'-dithiobisbenzoyl chloride (4.00 g, 11.7 mmol) in 100 mL of dichloromethane and 4-aminobenzamide (3.20 g, 23.5 mmol) in 26 mL of pyridine. The crude product was triturated with a hot mixture of acetonitrile and DMF, filtered, recrystallized from ethanol-water-DMF, triturated with a hot mixture of methanol and DMF, and filtered to yield 0.563 g of the title compound, mp >270° C. This compound was prepared The crude product was triturated with a hot mixture of acetonitrile and DMF filtered recrystallized from ethanol-water-DMF triturated with a hot mixture of methanol and DMF filtered