18-Crown-6 → (+/-)-tert-Butyl 4-(1-(5-cyanobenzo[d]oxazol-2-yl)-3-methoxy-3-oxopropyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate

HRID 2174117ノート

反応式

HRID 2174117 の反応式
CC(C)([O-])C.[K+].[C:7]([C:9]1[CH:10]=[CH:11][C:12]2[O:16][C:15]([CH2:17][C:18]3[C:26]([O:27][CH3:28])=[CH:25][C:24]([CH3:29])=[C:23]4[C:19]=3[CH:20]=[CH:21][N:22]4[C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[N:14][C:13]=2[CH:37]=1)#[N:8].C1OCCOCCOCCOCCOCCOC1.Br[CH2:57][C:58]([O:60][CH3:61])=[O:59]>C1COCC1>[C:7]([C:9]1[CH:10]=[CH:11][C:12]2[O:16][C:15]([CH:17]([C:18]3[C:26]([O:27][CH3:28])=[CH:25][C:24]([CH3:29])=[C:23]4[C:19]=3[CH:20]=[CH:21][N:22]4[C:30]([O:32][C:33]([CH3:34])([CH3:36])[CH3:35])=[O:31])[CH2:57][C:58]([O:60][CH3:61])=[O:59])=[N:14][C:13]=2[CH:37]=1)#[N:8]

参加物

6

反応物 4

HCID 2855718-Crown-6HCID 60984Methyl bromoacetateHCID 23665647Potassium tert-butoxideHCID 86701743tert-Butyl 4-((5-cyanobenzo[d]oxazol-2-yl)methyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate

生成物 1

HCID 86701760(+/-)-tert-Butyl 4-(1-(5-cyanobenzo[d]oxazol-2-yl)-3-methoxy-3-oxopropyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒4 回

実験手順

To a mixture of potassium tert-butoxide (108 mg, 0.958 mmol) in THF (0.715 mL) at −78° C. under nitrogen was added tert-butyl 4-((5-cyanobenzo[d]oxazol-2-yl)methyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate (Example 144-A) (200 mg, 0.479 mmol) in THF (4.3 mL) under nitrogen. After stirring for 15 min a solution of 18-crown-6 (12.66 mg, 0.048 mmol) in THF (1.430 mL) was added to the mixture at the same temperature and stirred for another 15 min. Then a solution of methyl bromoacetate (0.618 mL, 6.71 mmol) in THF (0.715 mL) was degassed and added dropwise and stirred at the same temp for 10 min. The reaction mixture was quenched with a saturated solution of ammonium chloride, extracted with EtOAc (2×), passed through a phase separator and concentrated to give the title compound. MS (ESI+) m/z 490.32 (M+H).

後処理

  1. additionwas added to the mixture at the same temperature
  2. additionadded dropwise
  3. stirringstirred at the same temp for 10 min
  4. customThe reaction mixture was quenched with a saturated solution of ammonium chloride
  5. extractionextracted with EtOAc (2×)
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-19d17045b65f4b0f9efc60df25395c25
出典データセット
uspto-grants-2015_06
特許番号
US09056874B2

反応ノート

読み込み中…