3-氨基-1,3-噁嗪烷-2-酮

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was synthesized in analogy to Example 1, using 5-cyclopropyl-6-cyclopropylmethyloxy-pyridine-2-carboxylic acid (Example 42a) and 3-aminotetrahydro-2H-1,3-oxazin-2-one (CAN 54924-47-9) as starting materials; LC-MS (UV peak area/ESI) 98.7%, 332.1612 (M+H)+.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was synthesized in analogy to Example 1, using 5-cyclopropyl-6-cyclopropylmethyloxy-pyridine-2-carboxylic acid (Example 42a) and 3-aminotetrahydro-2H-1,3-oxazin-2-one (CAN 54924-47-9) as starting materials; LC-MS (UV peak area/ESI) 98.7%, 332.1612 (M+H)+.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was synthesized in analogy to Example 1, using 5-cyclopropyl-6-cyclopropylmethyloxy-pyridine-2-carboxylic acid (Example 42a) and 3-aminotetrahydro-2H-1,3-oxazin-2-one (CAN 54924-47-9) as starting materials; LC-MS (UV peak area/ESI) 98.7%, 332.1612 (M+H)+.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of 5.4 g of 3-amino-tetrahydro-1,3-oxazine-2-one and 50 ml glyme was added 5.0 ml of phenyl isocyanate. After an exothermic reaction a white solid formed. The mixture was refluxed for 1 hr, cooled, diluted with hexane and filtered. The solid product was crystallized from 200 ml of ethanol to give 5.8 g (53% yield) of white cotton-like needles of 1-(tetrahydro-2-oxo-1,3-oxazin-3-yl)-3-phenylurea, mp 204°-207°. After an exothermic reaction a white solid formed The mixture was refluxed for 1 hr cooled filtered The solid product was crystallized from 200 ml of ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was synthesized in analogy to Example 1, using 5-cyclopropyl-6-cyclopropylmethyloxy-pyridine-2-carboxylic acid (Example 42a) and 3-aminotetrahydro-2H-1,3-oxazin-2-one (CAN 54924-47-9) as starting materials; LC-MS (UV peak area/ESI) 98.7%, 332.1612 (M+H)+.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of 5.4 g of 3-amino-tetrahydro-1,3-oxazine-2-one and 50 ml glyme was added 5.0 ml of phenyl isocyanate. After an exothermic reaction a white solid formed. The mixture was refluxed for 1 hr; cooled; diluted with hexane and filtered. The solid product was crystallized from 200 ml of ethanol to give 5.8 g (53% yield) of white cotton-like needles of 1-(tetrahydro-2-oxo-1,3-oxazin-3-yl)-3-phenylurea, mp 204°-207°. After an exothermic reaction a white solid formed The mixture was refluxed for 1 hr cooled filtered The solid product was crystallized from 200 ml of ethanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was synthesized in analogy to Example 1, using 5-cyclopropyl-6-cyclopropylmethyloxy-pyridine-2-carboxylic acid (Example 42a) and 3-aminotetrahydro-2H-1,3-oxazin-2-one (CAN 54924-47-9) as starting materials; LC-MS (UV peak area/ESI) 98.7%, 332.1612 (M+H)+.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of 5.4 g of 3-amino-tetrahydro-1,3-oxazine-2-one and 50 ml glyme was added 5.0 ml of phenyl isocyanate. After an exothermic reaction a white solid formed. The mixture was refluxed for 1 hr, cooled, diluted with hexane and filtered. The solid product was crystallized from 200 ml of ethanol to give 5.8 g (53% yield) of white cotton-like needles of 1-(tetrahydro-2-oxo-1,3-oxazin-3-yl)-3-phenylurea, mp 204°-207°. After an exothermic reaction a white solid formed The mixture was refluxed for 1 hr cooled filtered The solid product was crystallized from 200 ml of ethanol