ethyl heptanoate

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

Procedure: n-Butyllithiium (130 ml. of 1.6 M. solution) is slowly added to a solution of dimethyl methylphosphonate (25.6 g.) in 475 ml. of tetrahydrofuran (THF) at about -65° C. To the mixture is added a solution of ethyl heptanoate (18.4 g.) in 50 ml. of THF, annd the resulting mixture is stirred at about -70° C. for 2 hrs. Then, 16 ml. of acetic acid is added, and the mixture is concentrated under reduced pressure. The residue is mixed with dichloromethane (about 400 ml.) and water (about 50 ml.) shaken, and separated. The organic phase is dried over magnesium sulfate and concentrated. Distillation yields the title compound. at about -65° C the mixture is concentrated under reduced pressure The residue is mixed with dichloromethane (about 400 ml.) and water (about 50 ml.) separated The organic phase is dried over magnesium sulfate concentrated Distillation

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

Procedure: n-Butyllithiium (130 ml. of 1.6 M. solution) is slowly added to a solution of dimethyl methylphosphonate (25.6 g.) in 475 ml. of tetrahydrofuran (THF) at about -65° C. To the mixture is added a solution of ethyl heptanoate (18.4 g.) in 50 ml. of THF, annd the resulting mixture is stirred at about -70° C. for 2 hrs. Then, 16 ml. of acetic acid is added, and the mixture is concentrated under reduced pressure. The residue is mixed with dichloromethane (about 400 ml.) and water (about 50 ml.) shaken, and separated. The organic phase is dried over magnesium sulfate and concentrated. Distillation yields the title compound. at about -65° C the mixture is concentrated under reduced pressure The residue is mixed with dichloromethane (about 400 ml.) and water (about 50 ml.) separated The organic phase is dried over magnesium sulfate concentrated Distillation

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

Procedure: 12.2 g of hydrazine hydrate was added to a solution of 15 g of ethyl heptanoate in 20 ml of ethanol, followed by heat-refluxing for 4.5 hours. After the reaction, the reaction mixture was cooled to precipitate a crystal. The crystal was recovered by filtration and recrystallized from 20 ml of ethanol to obtain 7 g of heptanohydrazide. by heat-refluxing for 4.5 hours After the reaction the reaction mixture was cooled to precipitate a crystal The crystal was recovered by filtration recrystallized from 20 ml of ethanol

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

Procedure: n-Butyllithiium (130 ml. of 1.6 M. solution) is slowly added to a solution of dimethyl methylphosphonate (25.6 g.) in 475 ml. of tetrahydrofuran (THF) at about -65° C. To the mixture is added a solution of ethyl heptanoate (18.4 g.) in 50 ml. of THF, annd the resulting mixture is stirred at about -70° C. for 2 hrs. Then, 16 ml. of acetic acid is added, and the mixture is concentrated under reduced pressure. The residue is mixed with dichloromethane (about 400 ml.) and water (about 50 ml.) shaken, and separated. The organic phase is dried over magnesium sulfate and concentrated. Distillation yields the title compound. at about -65° C the mixture is concentrated under reduced pressure The residue is mixed with dichloromethane (about 400 ml.) and water (about 50 ml.) separated The organic phase is dried over magnesium sulfate concentrated Distillation