4-Aminobenzoic Acid → 4-(9-cyclobutyl-7,7-difluoro-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-benzoic acid

HRID 1676551Notes

Reaction equation

HRID 1676551 reaction equation
Cl[C:2]1[N:3]=[CH:4][C:5]2[N:11]([CH3:12])[C:10](=[O:13])[C:9]([F:15])([F:14])[CH2:8][N:7]([CH:16]3[CH2:19][CH2:18][CH2:17]3)[C:6]=2[N:20]=1.[NH2:21][C:22]1[CH:30]=[CH:29][C:25]([C:26]([OH:28])=[O:27])=[CH:24][CH:23]=1>C(O)C.O.Cl>[CH:16]1([N:7]2[CH2:8][C:9]([F:15])([F:14])[C:10](=[O:13])[N:11]([CH3:12])[C:5]3[CH:4]=[N:3][C:2]([NH:21][C:22]4[CH:30]=[CH:29][C:25]([C:26]([OH:28])=[O:27])=[CH:24][CH:23]=4)=[N:20][C:6]2=3)[CH2:19][CH2:18][CH2:17]1

Participants

4

Reactant 2

HCID 9784-Aminobenzoic AcidHCID 866375032-Chloro-9-cyclobutyl-7,7-difluoro-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one

Product 1

HCID 445472064-(9-cyclobutyl-7,7-difluoro-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-benzoic acidYield 60.1%

Reagents, catalysts & solvents 1

HCID 86604601Ethanol water hydrochloric acidSolvent

Procedure

A mixture of 2.00 g (6.6 mmole) of 2-chloro-9-cyclobutyl-7,7-difluoro-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VII-1), 1.655 g (12.08 mmole) of 4-amino-benzoic acid and 200 mL of ethanol-water-hydrochloric acid (20:80:1) was refluxed for 18 hours, then concentrated under reduced pressure. The solid was washed with water and then purified by silica gel chromatography, eluting with dichloromethane-methanol-ammonium hydroxide (92:8:0.3) to give 1.600 g of 4-(9-cyclobutyl-7,7-difluoro-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-benzoic acid (I-11).

Workup

  1. temperaturewas refluxed for 18 hours
  2. concentrationconcentrated under reduced pressure
  3. washThe solid was washed with water
  4. custompurified by silica gel chromatography
  5. washeluting with dichloromethane-methanol-ammonium hydroxide (92:8:0.3)

Sources & evidence

ORD record
ord-c104ee80c71e4e4787b9d2b3485b8c80
Source dataset
uspto-grants-2011_08
Patent number
US08003785B2

Reaction notes

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