Hydrochloric Acid → 4-(9-cyclopentyl-5,7,7-trimethyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-3-methoxybenzoic acid

HRID 2234290Notes

Reaction equation

HRID 2234290 reaction equation
Cl[C:2]1[N:12]=[C:11]2[C:5]([N:6]([CH3:21])[C:7](=[O:20])[C:8]([CH3:19])([CH3:18])[CH2:9][N:10]2[CH:13]2[CH2:17][CH2:16][CH2:15][CH2:14]2)=[CH:4][N:3]=1.[NH2:22][C:23]1[CH:31]=[CH:30][C:26]([C:27]([OH:29])=[O:28])=[CH:25][C:24]=1[O:32][CH3:33].O.Cl>C(O)C>[CH:13]1([N:10]2[CH2:9][C:8]([CH3:19])([CH3:18])[C:7](=[O:20])[N:6]([CH3:21])[C:5]3[C:11]2=[N:12][C:2]([NH:22][C:23]2[CH:31]=[CH:30][C:26]([C:27]([OH:29])=[O:28])=[CH:25][C:24]=2[O:32][CH3:33])=[N:3][CH:4]=3)[CH2:17][CH2:16][CH2:15][CH2:14]1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 2880572486-69-3HCID 592951162-Chloro-9-cyclopentyl-5,7,7-trimethyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one2×

Product 1

HCID 426107874-(9-cyclopentyl-5,7,7-trimethyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-3-methoxybenzoic acidYield 47.8%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of 10-chloro-2-cyclopentyl-4,4,6-trimethyl-2,6,9,11-tetrazabicyclo[5.4.0]undeca-7,9,11-trien-5-one (Intermediate 126; 616 mg, 2.0 mmol) and 4-amino-3-methoxybenzoic acid (378 mg, 2.2 mmol) in ethanol (5 mL) was added water (15 mL) and conc hydrochloric acid (0.335 mL). The mixture was heated under reflux for 36 hours. The reaction was cooled and a brown solid precipitated. This was filtered, dried and triturated under cold acetonitrile and then dried in vacuo to give the product as a pale brown solid (420 mg), 48%)

Workup

  1. temperatureThe mixture was heated
  2. temperatureunder reflux for 36 hours
  3. temperatureThe reaction was cooled
  4. customa brown solid precipitated
  5. filtrationThis was filtered
  6. customdried
  7. customtriturated under cold acetonitrile
  8. customdried in vacuo

Sources & evidence

ORD record
ord-4f3e6efb451c47509ee705ae4a3ea2c8
Source dataset
uspto-grants-2010_05
Patent number
US07709471B2

Reaction notes

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