Sodium hydride → [2-Bromo-4-(3-methyl-pyrazol-1-yl)-phenyl]-(5,11-dihydro-benzo[b]pyrido[2,3-e][1,4]diazepin-6-yl)-methanone

HRID 2288678노트

반응식

HRID 2288678 반응식
[H-].[Na+].[CH3:3][C:4]1[CH:8]=[CH:7][NH:6][N:5]=1.[Br:9][C:10]1[CH:15]=[C:14](F)[CH:13]=[CH:12][C:11]=1[C:17]([N:19]1[C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][C:24]=2[NH:23][C:22]2[N:30]=[CH:31][CH:32]=[CH:33][C:21]=2[CH2:20]1)=[O:18]>CCCCCC>[Br:9][C:10]1[CH:15]=[C:14]([N:6]2[CH:7]=[CH:8][C:4]([CH3:3])=[N:5]2)[CH:13]=[CH:12][C:11]=1[C:17]([N:19]1[C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][C:24]=2[NH:23][C:22]2[N:30]=[CH:31][CH:32]=[CH:33][C:21]=2[CH2:20]1)=[O:18]

참가 물질

5

반응물 3

HCID 24758Sodium hydrideHCID 15513329[2-Bromo-4-fluorophenyl]-(6,11-dihydro-5H-pyrido[2,3-b][1,5]benzodiazepin-6-yl)-methanoneHCID 178428694HCID 178428694, 화합물

생성물 1

HCID 9868852[2-Bromo-4-(3-methyl-pyrazol-1-yl)-phenyl]-(5,11-dihydro-benzo[b]pyrido[2,3-e][1,4]diazepin-6-yl)-methanone수율 46.5%

시약·촉매·용매 1

HCID 8058Hexane용매

실험 절차

Sodium hydride (60% suspension in oil, 1.2 g, 30.15 mmol) was washed with hexane, dried under nitrogen and resuspended in dry dimethylformamide (110 mL). Neat 3-methylpyrazole (2.47 g, 30.15 mmol) was added dropwise at 0° C. After the gas evolution subsided the cooling bath was removed and stirring was continued at room temperature. The [2-bromo-4-fluorophenyl]- (5,11-dihydro-pyrido [2,3-b][1,5]benzodiazepin-6-yl)-methanone of Step B (6 g, 18.07 mmol) was added in one portion to the clear solution. The mixture was placed in an oil bath (preheated at 130° C.) for 40 minutes, cooled and partitioned between water and ethyl acetate. The organic extracts were dried over magnesium sulfate and evaporated to dryness. The crude material was dissolved in dichloromethane and absorbed onto a silica Merck-60 flash column. Elution with a hexane-ethyl acetate gradient (from 95:5 to 75:25) provided the less polar title compound (3.87 g) along with a mixture of 3- and 5-methylpyrazole regioisomers (0.860 g). The title compound (3.5 g, 51%) crystallized by sonication from hexane-ethanol, m.p. 208-209° C. (dec).

후처리

  1. customdried under nitrogen
  2. customwas removed
  3. customwas continued at room temperature
  4. customThe mixture was placed in an oil bath
  5. temperaturecooled
  6. custompartitioned between water and ethyl acetate
  7. dry with materialThe organic extracts were dried over magnesium sulfate
  8. customevaporated to dryness
  9. dissolutionThe crude material was dissolved in dichloromethane
  10. customabsorbed onto a silica Merck-60 flash column
  11. washElution with a hexane-ethyl acetate gradient (from 95:5 to 75:25)

출처 및 근거

ORD 기록
ord-2f035f582e64477b8a2b94c7fc87efb0
출처 데이터셋
uspto-grants-2000_07
특허 번호
US06090803

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