3a,4,7,7a-tetrahydroisoindole-1,3-dione

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

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

Procedure: Ethyl chloroformate (0.18 ml, 1.89 mmol) was added dropwise to a stirred solution of 1,2,3,6-tetrahydrophthalimide (0.22 g, 1.45 mmol) and triethylamine (0.23 ml, 1.67 mmol) in dimethylformamide (2 ml) at 0-5° C. The reaction mixture was allowed to warm to room temperature and stand for 4 h. Methyl alcohol (1 ml) was added, diluted with chloroform (20 ml) and washed with water (3×10 ml). The chloroform solution was dried (Na2SO4) and concentrated in vacuum to give N-ethoxycarbonyl-1,2,3,6-tetrahydrophthalimide (yield 82%). washed with water (3×10 ml) The chloroform solution was dried (Na2SO4) concentrated in vacuum

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

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

Procedure: 1,2,3,6-Tetrahydrophthalimide is converted to the potassium salt and reacted with 1-(2-hydroxyethyl)-2-methyl-5-nitroimidazole tosylate according to the procedure described in Example 13. The crude reaction mixture obtained is concentrated and the concentrate distributed between water and toluene. The toluene layer is separated and the solvent is evaporated to leave a residue which is recrystallized from 2-propanol, affording N-[2-(2-methyl-5-nitro-1-imidazolyl)ethyl]-1,2,3,6-tetrahydrophthalimide melting at about 118°-123° C. The crude reaction mixture obtained is concentrated The toluene layer is separated the solvent is evaporated to leave a residue which is recrystallized from 2-propanol

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

Procedure: A solution of 4-cyclohexene-1,2-dicarboximide (151g) and triethylamine (300 mls) in dichloropropane (900 mls) was maintained at a temperature of 50° C during the addition thereto over a period of 10 minutes, with constant stirring, of a solution of stearoyl chloride (302.5g) in a dichloropropane (300 mls). The mixture was stirred at 50° C for a further period of 10 minutes during which time triethylamine hydrochloride precipitated out, and was then filtered hot. The filtered precipitate was then washed with small portions of hot dichloropropane and the washings were combined with the filtrate. The solvent from the combined washings and filtrate was then evaporated off in a rotary evaporator to yield solid N-stearoyl-4-cyclohexene-1,2-dicarboximide, which was recrystallised from 60° - 80° petroleum ether. precipitated out was then filtered hot The filtered precipitate was then washed with small portions of hot dichloropropane The solvent from the combined washings and filtrate was then evaporated off in a rotary evaporator

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

Procedure: Ethyl chloroformate (0.18 ml, 1.89 mmol) was added dropwise to a stirred solution of 1,2,3,6-tetrahydrophthalimide (0.22 g, 1.45 mmol) and triethylamine (0.23 ml, 1.67 mmol) in dimethylformamide (2 ml) at 0-5° C. The reaction mixture was allowed to warm to room temperature and stand for 4 h. Methyl alcohol (1 ml) was added, diluted with chloroform (20 ml) and washed with water (3×10 ml). The chloroform solution was dried (Na2SO4) and concentrated in vacuum to give N-ethoxycarbonyl-1,2,3,6-tetrahydrophthalimide (yield 82%). washed with water (3×10 ml) The chloroform solution was dried (Na2SO4) concentrated in vacuum