1-(2-chloroethyl)pyrrolidin-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: 11 G. of 1-(10,11-dihydro-3-methoxy-8-methylthio-dibenzo[b,f]thiepin-10-yl)-piperazine are heated together with 15 g. of potassium carbonate, 0.5 g. of sodium iodide, 11 g. of N-(β-chloroethyl)-2-pyrrolidinone and 100 ml. of toluene under reflux conditions for 17 hours. Then, the mixture is evaporated under reduced pressure. The residue is partitioned between water and ether, and the ethereal phase dried over sodium sulfate and evaporated. The residue obtained is chromatographed with chloroform over aluminum oxide. The 1-{2-[4-(10,11-dihydro-3-methoxy-8-methylthio-dibenzo[b,f]thiepin-10-yl)-1-piperazinyl]-ethyl}-2-pyrrolidinone thus obtained is converted into the corresponding dihydrochloride by reaction with hydrogen chloride. The resulting dihydrochloride melts at 202°C. Then, the mixture is evaporated under reduced pressure The residue is partitioned between water and ether the ethereal phase dried over sodium sulfate evaporated The residue obtained is chromatographed with chloroform over aluminum oxide

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

Procedure: 11 G. of 1-(10,11-dihydro-3-methoxy-8-methylthio-dibenzo[b,f]thiepin-10-yl)-piperazine are heated together with 15 g. of potassium carbonate, 0.5 g. of sodium iodide, 11 g. of N-(β-chloroethyl)-2-pyrrolidinone and 100 ml. of toluene under reflux conditions for 17 hours. Then, the mixture is evaporated under reduced pressure. The residue is partitioned between water and ether, and the ethereal phase dried over sodium sulfate and evaporated. The residue obtained is chromatographed with chloroform over aluminum oxide. The 1-{2-[4-(10,11-dihydro-3-methoxy-8-methylthio-dibenzo[b,f]thiepin-10-yl)-1-piperazinyl]-ethyl}-2-pyrrolidinone thus obtained is converted into the corresponding dihydrochloride by reaction with hydrogen chloride. The resulting dihydrochloride melts at 202°C. Then, the mixture is evaporated under reduced pressure The residue is partitioned between water and ether the ethereal phase dried over sodium sulfate evaporated The residue obtained is chromatographed with chloroform over aluminum oxide

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

Procedure: 11 G. of 1-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)piperazine are heated together with 15.5 g. of potassium carbonate, 0.5 g. of sodium iodide, 11 g. of N-(beta-chloroethyl)-pyrrolidinone and 150 ml. of toluene under reflux conditions over a period of 12 hours. The reaction mixture is evaporated under reduced pressure. The residue is dispersed between water and ether and the ethereal phase is dried over sodium sulfate and evaporated, whereby there is obtained 1-{2-[4-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)1-piperazinyl]-ethyl}-2-pyrrolidinone, having a melting point of 153°-164°. The maleate melts at 179°-180°. The reaction mixture is evaporated under reduced pressure The residue is dispersed between water and ether the ethereal phase is dried over sodium sulfate evaporated

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-(2-Chloroethyl)pyrrolidin-2-one (0.72 g, 4.8 mmol) was added to a solution of potassium carbonate (1.2 g, 8.7 mmol), 4-nitro-1H-pyrazole (0.5 g, 4.4 mmol) in dry acetonitrile (4 mL) and the reaction was stirred at 60° C. overnight. The solvent was concentrated in vacuo, then the residue was slurried in water, collected by filtration and dried in vacuo to afford 1-(2-(4-nitro-1H-pyrazol-1-yl)ethyl)pyrrolidin-2-one (0.21 g, 0.9 mmol). LC-MS (Method H), RT=1.23 min. (ES+) 225. The solvent was concentrated in vacuo collected by filtration dried in vacuo

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

Procedure: Add thionyl chloride (5 mL) to 1-(2-hydroxy-ethyl)-pyrrolidin-2-one (1.12 mL, 10.0 mmol) dropwise then stir at room temperature for 10 min. Remove solvent in vacuo to give the title compound as an orange oil. MS (ES+) m/z: 148 (M+H)+.

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

Procedure: 11 G. of 1-(10,11-dihydro-3-methoxy-8-methylthio-dibenzo[b,f]thiepin-10-yl)-piperazine are heated together with 15 g. of potassium carbonate, 0.5 g. of sodium iodide, 11 g. of N-( β-chloroethyl)-2-pyrrolidinone and 100 ml. of toluene under reflux conditions for 17 hours. Then, the mixture is evaporated under reduced pressure. The residue is partitioned between water and ether, and the ethereal phase dried over sodium sulfate and evaporated. The residue obtained is chromatographed with chloroform over aluminum oxide. The 1-{2-[4-(10,11-dihydro-3-methoxy-8-methylthio-dibenzo[b,f]thiepin-10-yl)-1-piperazinyl]-ethyl}-2-pyrrolidinone thus obtained is converted into the corresponding dihydrochloride by reaction with hydrogen chloride. The resulting dihydrochloride melts at 202° C. Then, the mixture is evaporated under reduced pressure The residue is partitioned between water and ether the ethereal phase dried over sodium sulfate evaporated The residue obtained is chromatographed with chloroform over aluminum oxide

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

Procedure: 11 G. of 1-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)piperazine are heated together with 15.5 g. of potassium carbonate, 0.5 g. of sodium iodide, 11 g. of N-(beta-chloroethyl)-pyrrolidinone and 150 ml. of toluene under reflux conditions over a period of 12 hours. The reaction mixture is evaporated under reduced pressure. The residue is dispersed between water and ether and the ethereal phase is dried over sodium sulfate and evaporated, whereby there is obtained 1-{-2-[4-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin10-yl)-1-piperazinyl]-ethyl}-2-pyrrolidinone, having a melting point of 153°-164°. The maleate melts at 179°-180°. The reaction mixture is evaporated under reduced pressure The residue is dispersed between water and ether the ethereal phase is dried over sodium sulfate evaporated

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

Procedure: 11 G. of 1-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin-10-yl)piperazine are heated together with 15.5 g. of potassium carbonate, 0.5 g. of sodium iodide, 11 g. of N-(beta-chloroethyl)-pyrrolidinone and 150 ml. of toluene under reflux conditions over a period of 12 hours. The reaction mixture is evaporated under reduced pressure. The residue is dispersed between water and ether and the ethereal phase is dried over sodium sulfate and evaporated, whereby there is obtained 1-{-2-[4-(8-chloro-10,11-dihydro-2-methyl-dibenzo[b,f]thiepin10-yl)-1-piperazinyl]-ethyl}-2-pyrrolidinone, having a melting point of 153°-164°. The maleate melts at 179°-180°. The reaction mixture is evaporated under reduced pressure The residue is dispersed between water and ether the ethereal phase is dried over sodium sulfate evaporated

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

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