prop-2-enylurea

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

Procedure: To allylurea (25 g, 0.25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 0.25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82-5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected

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

Procedure: By the procedure of Example 4, 6 g (60 mmol) of allyl urea was reacted with 10.9 g (50 mmol) of ethyl 2-chloro-4,4,4-trifluoroacetoacetate at 140°-150° C. for 18 hours. The product was separated and then recrystallized from methylcyclohexane to yield 4.77 g of a yellow solid product (m.p.=48°-49° C.) identified in Table I. The product was separated recrystallized from methylcyclohexane

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

Procedure: To allylurea (25 g, 0.25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 0.25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82–5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected

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

Procedure: To allylurea (25 g, 25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82-5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected

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

Procedure: To allylurea (25 g, 0.25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 0.25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82-5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected

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

Procedure: By the procedure of Example 4, 6 g (60 mmol) of allyl urea was reacted with 10.9 g (50 mmol) of ethyl 2-chloro-4,4,4-trifluoroacetoacetate at 140°-150° C. for 18 hours. The product was separated and then recrystallized from methylcyclohexane to yield 4.77 g of a yellow solid product (m.p.=48°-49° C.) identified in Table I. The product was separated recrystallized from methylcyclohexane

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

Procedure: By the procedure of Example 4, 6 g (60 mmol) of allyl urea was reacted with 10.9 g (50 mmol) of ethyl 2-chloro-4,4,4-trifluoroacetoacetate at 140°-150° C. for 18 hours. The product was separated and then recrystallized from methylcyclohexane to yield 4.77 g of a yellow solid product (m.p.=48°-49° C.) identified in Table I. The product was separated recrystallized from methylcyclohexane

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

Procedure: To allylurea (25 g, 0.25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 0.25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82–5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected

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

Procedure: To allylurea (25 g, 0.25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 0.25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82–5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 70 grams of mercaptopropyltrimethoxy silane and 35.5 gms. of allylurea were weighed into a flask equipped as in Example 1. The contents of the flask were heated to about 90° C. and 0.3 gm. of Vazo 64 was added. The temperature indicated an exotherm to about 145° C. which was controlled back down to about 100° C. for a total of 61/2 hours and it was then cooled. Titration of a sample showed about 71% reaction of the mercaptan. The material was filtered. The proton NMR analysis showed a structure consistent with the title compound. There was unreacted allylurea present at less than 25%. equipped as in Example 1 exotherm to about 145° C. was then cooled The material was filtered

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 70 grams of mercaptopropyltrimethoxy silane and 35.5 gms. of allylurea were weighed into a flask equipped as in Example 1. The contents of the flask were heated to about 90° C. and 0.3 gm. of Vazo 64 was added. The temperature indicated an exotherm to about 145° C. which was controlled back down to about 100° C. for a total of 61/2 hours and it was then cooled. Titration of a sample showed about 71% reaction of the mercaptan. The material was filtered. The proton NMR analysis showed a structure consistent with the title compound. There was unreacted allylurea present at less than 25%. equipped as in Example 1 exotherm to about 145° C. was then cooled The material was filtered

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

Procedure: To allylurea (25 g, 0.25 mol) in ethanol (10 mL) was added ethyl acetoacetate (31.86 mL, 0.25 mol) and 10 drops conc. HCl. After 12 days at room temperature, concentration gave an oil which was dissolved in MeOH. KOH (22.5 g, 0.34 mol) was added and the solution refluxed for 1 hour. After neutralization, the resulting solid 1 was collected. Yield 2.7 g (7%). NMR (CDCl3) δ: 2.16 (3H, s), 4.52 (2H, d), 5.18 (1H, d), 5.23 (1H, d), 5.60 (1H, s), 5.82-5.93 (1H, m), 10.3 (1H, s). concentration gave an oil which the solution refluxed for 1 hour After neutralization, the resulting solid 1 was collected