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 2288678

反応式

HRID 2288678 の反応式
[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]

参加物

5

反応物 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、化合物

生成物 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)-methanone収率 46.5%

試薬・触媒・溶媒 1

HCID 8058Hexane溶媒

実験手順

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).

後処理

  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)

出典と根拠

ORDレコード
ord-2f035f582e64477b8a2b94c7fc87efb0
出典データセット
uspto-grants-2000_07
特許番号
US06090803

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