4-Bromophenacyl bromide → 4-((3-Chloro-4-fluorophenyl)amino)-7-methyl-5H-pyrrolo[2,3-d]pyrimidin-6(7H)-one

HRID 397402Notes

Reaction equation

HRID 397402 reaction equation
C1C(C(CBr)=[O:8])=CC=C(Br)C=1.[Cl:12][C:13]1[CH:14]=[C:15]([NH:20][C:21]2[C:22]3[CH:29]=[CH:28][N:27]([CH3:30])[C:23]=3[N:24]=[CH:25][N:26]=2)[CH:16]=[CH:17][C:18]=1[F:19]>C(O)(C)(C)C.C(O)(=O)C.[Zn]>[Cl:12][C:13]1[CH:14]=[C:15]([NH:20][C:21]2[C:22]3[CH2:29][C:28](=[O:8])[N:27]([CH3:30])[C:23]=3[N:24]=[CH:25][N:26]=2)[CH:16]=[CH:17][C:18]=1[F:19]

Participants

6

Reactant 2

HCID 74544-Bromophenacyl bromideHCID 22390983N-(3-Chloro-4-fluorophenyl)-7-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine

Product 1

HCID 223909724-((3-Chloro-4-fluorophenyl)amino)-7-methyl-5H-pyrrolo[2,3-d]pyrimidin-6(7H)-oneYield 98.1%

Reagents, catalysts & solvents 3

HCID 23994ZincCatalystHCID 176Acetic AcidSolventHCID 6386tert-ButanolSolvent

Procedure

PBPB (2.8 g, 7.8 mmol) was added portionwise to the (3-chloro-4-fluoro-phenyl)-(7-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amine (1.08 g, 3.9 mmol) suspended in tert-butanol (20 mL) and acetic acid (10 mL). After stirring at room temperature for 18 hours, to the mixture was added zinc dust (760 mg, 11.7 mmol) portionwise and stirring was continued for overnight. The precipitate was filtered off and the filtrate was concentrated. The residue was triturated with little water and the precipitate was collected by vacuum filtration, washed with little ethyl acetate and dried to give 1.12 g (98%) of 4-(3-chloro-4-fluoro-phenylamino)-7-methyl-5,7-dihydro-pyrrolo[2,3-d]pyrimidin-6-one as a tan colored solid. 1H NMR (DMSO-d6) 9.07 (s, 1H, NH), 8.42 (s, 1H), 8.01 (d, J=2.6 & 7.2 Hz, 1H) 7.56 (m, 1H), 7.34 (t,J=9.1 Hz, 1H), 3.48 (s, 2H, CH2), 3.07 (s, 3H, CH3).

Workup

  1. stirringstirring
  2. waitwas continued for overnight
  3. filtrationThe precipitate was filtered off
  4. concentrationthe filtrate was concentrated
  5. customThe residue was triturated with little water
  6. filtrationthe precipitate was collected by vacuum filtration
  7. washwashed with little ethyl acetate
  8. customdried

Sources & evidence

ORD record
ord-1a7d2d88001846aab57602f4519d8e48
Source dataset
uspto-grants-2003_08
Patent number
US06610688B2

Reaction notes

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