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

HRID 2280011Notes

Reaction equation

HRID 2280011 reaction equation
Cl[C:2]1[N:3]=[CH:4][C:5]2[N:11]([CH3:12])[C:10](=[O:13])[CH2:9][CH2:8][N:7]([CH:14]3[CH2:18][CH2:17][CH2:16][CH2:15]3)[C:6]=2[N:19]=1.[NH2:20][C:21]1[CH:29]=[CH:28][C:24]([C:25]([OH:27])=[O:26])=[CH:23][C:22]=1[O:30][CH3:31].C(O)(C(F)(F)F)=O>>[CH:14]1([N:7]2[CH2:8][CH2:9][C:10](=[O:13])[N:11]([CH3:12])[C:5]3[CH:4]=[N:3][C:2]([NH:20][C:21]4[CH:29]=[CH:28][C:24]([C:25]([OH:27])=[O:26])=[CH:23][C:22]=4[O:30][CH3:31])=[N:19][C:6]2=3)[CH2:18][CH2:17][CH2:16][CH2:15]1

Participants

4

Reactant 3

HCID 6422Trifluoroacetic acidHCID 2880572486-69-3HCID 579405262-Chloro-9-cyclopentyl-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one2×

Product 1

HCID 426102404-(9-cyclopentyl-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-3-methoxybenzoic acidYield 64.2%

Procedure

2-Chloro-9-cyclopentyl-5-methyl-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one (Intermediate 1) (0.70 g, 2.5 mmol, 1 eq), 4-amino-3-methoxybenzoic acid (1.25 g, 7.5 mmol, 3 eq) and TFA (0.93 mL, 12.5 mmol, 5 eq) were heated to reflux in TFE (25 mL) for 20 hours. Solvent was evaporated in vacuo and the resulting residue was triturated with MeOH to give 4-(9-cyclopentyl-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-3-methoxybenzoic acid (0.66 g, 64%).

Workup

  1. temperatureto reflux in TFE (25 mL) for 20 hours
  2. customSolvent was evaporated in vacuo
  3. customthe resulting residue was triturated with MeOH

Sources & evidence

ORD record
ord-119d7998ad07444fb894139ebac1089c
Source dataset
uspto-grants-2015_09
Patent number
US09133199B2

Reaction notes

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