1-(2-fluorophenyl)-3-methylurea

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The product weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calculated 35.7, found 37.3; %N, calculated 9.5, found 9.5. The product is the sixth compound tabulated in Table I. After several minutes an exothermicity was noted to form the product was collected on a filter dried

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The solid, which weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calculated 35.7, found 37.3; %N, calculated 9.5, found 9.5. After several minutes an exothermicity was noted to form the product was collected on a filter dried

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 L mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes, an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours, a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The solid, which weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calc. 35.7, found 37.3; %N, calc. 9.5, found 9.5. After several minutes to form the product was collected on a filter dried

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes, an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours, a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The solid, which weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calc. 35.7, found 37.3; %N, calc. 9.5, found 9.5. After several minutes to form the product was collected on a filter dried

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes, an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 1 1/2 hours, a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected of a filter and dried. The solid, which weighed 25 g, melted at 130°-141° C and analyzed as follows: %Cl, calc. 35.7, found 37.3; %N, calc. 9.5, found 9.5. After several minutes to form the product was collected of a filter dried

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes, an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours, a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The solid, which weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calc. 35.7, found 37.3; %N, calc. 9.5, found 9.5. After several minutes to form the product was collected on a filter dried

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

Procedure: To a stirred solution of 8.4 g. (0.05 mol) of N-(2-fluorophenyl)-N'-methyl urea dissolved in 200 ml. of 1,2-dimethoxyethane there was added 2.4 g. of a 50% dispersion of sodium hydride (0.05 mol) in mineral oil. The resulting mixture was stirred for 15 minutes more. Then 4.2 g. (0.05 mol) of chloromethyl methyl ether was added dropwise. After all ether was added, the mixture was stirred for 16 hours. At the end of this time it was filtered through a layer of magnesium sulfate. The filtrate was evaporated to give an oily residue which crystallized upon standing. These crystals were washed with hexane and then dried to give 6.2 g. of product, melting point 57°-59°C. Analysis: Calculated for C10H13FN2O2 : F, 8.96%; Found: F, 8.97%. The infrared spectrum showed strong adsorptions at 6.1, 6.6, 6.7, 6.9, 7.8, 9.1 and 13.5μ. The NMR spectra was consistent with the assigned structure. the mixture was stirred for 16 hours At the end of this time it was filtered through a layer of magnesium sulfate The filtrate was evaporated to give an oily residue which crystallized These crystals were washed with hexane dried to give 6.2 g

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

Procedure: To a stirred slurry of 16.8 g. (0.1 mol) of N-(2-fluorophenyl)-N'-methyl urea, dissolved in 500 ml. of acetone containing 9.24 g. (0.11 mol) of sodium bicarbonate was added 10.6 g. ((0.11 mol) of chloromethyl methyl sulfide. The resulting mixture was stirred for 2 hours at a gentle reflux. The precipitated solid was removed by filtration. The filtrate was evaporated to give a clear oil. Crystallization from benzene gave 7.1 g. of the original urea. The filtrate from this crystallization was evaporated and the residue crystallized from diethylether to give 3.4 g. of a crystalline solid product, melting point 81°-82°C. Analysis calculated for C10H13FN2OS: S, 14.03%; F, 8.32%. Found: S, 14.02%; F, 8.43%. The infrared spectrum showed strong adsorption at 3.0, 6.9, 7.3 and 13.0μ. The NMR spectra was consistent with the assigned structure. The precipitated solid was removed by filtration The filtrate was evaporated to give a clear oil Crystallization from benzene gave 7.1 g The filtrate from this crystallization was evaporated the residue crystallized from diethylether to give 3.4 g

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

Procedure: A solution of 16.8 g. (0.1 mol) of N-(2-fluorophenyl)-N'-methyl urea in 250 ml. of 1,2-dimethoxyethane was cooled to 0°C. Then 4.8 g. (0.1 mol) of a 50% dispersion of sodium hydride in mineral oil was added slowly. After addition was complete, the solution was stirred for 15 minutes. This solution was added slowly to a stirred solution of 9.7 g. (0.1 mol) of chloromethyl methyl sulfide in 100 ml. of 1,2-dimethoxyethane. The resulting mixture was stirred at room temperature for 65 hours. At the end of this time, the precipitate was removed by filtration and the resulting filtrate was evaporated to give an oil which solidified upon adding water. The solid was isolated by filtration, washed with hexane and dried. Recrystallization from a hexene-benzene mixture gave 12 g. crystalline solid, melting point 102.5°-103°C. An infrared spectrum showed sharp, strong adsorptions at 3.0, 6.1, 13.05 and 13.2μ . After addition This solution was added slowly to a stirred solution of 9.7 g The resulting mixture was stirred at room temperature for 65 hours At the end of this time, the precipitate was removed by filtration the resulting filtrate was evaporated to give an oil which The solid was isolated by filtration washed with hexane dried Recrystallization from a hexene-benzene mixture gave 12 g

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The product weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calculated 35.7, found 37.3; %N, calculated 9.5, found 9.5. The product is the sixth compound tabulated in Table I. After several minutes an exothermicity was noted to form the product was collected on a filter dried

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

Procedure: N-methyl-N'-o-fluorophenyl urea (16.8 g, 0.1 mol) was combined with 22.5 g (0.15 mol) chloral and 18.0 g (0.15 mol) thionyl chloride. After several minutes an exothermicity was noted and the reaction mixture became a homogenous yellow oil. After 5 minutes more, a precipitate began to form. After 11/2 hours a 3:1 mixture of diethyl ether:petroleum ether was added and the product was collected on a filter and dried. The solid, which weighed 25 g, melted at 130°-141° C. and analyzed as follows: %Cl, calculated 35.7, found 37.3; %N, calculated 9.5, found 9.5. After several minutes an exothermicity was noted to form the product was collected on a filter dried