Phenylboronic Acid → Ethyl 4,6-diphenyl-3-(3-ethoxy-3-oxopropyl)-1H-indole-2-carboxylate

HRID 1950682노트

반응식

HRID 1950682 반응식
Br[C:2]1[CH:10]=[C:9](Br)[CH:8]=[C:7]2[C:3]=1[C:4]([CH2:17][CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20])=[C:5]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[NH:6]2.[C:24]1(B(O)O)[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.O.O.O.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O1CCOCC1>[C:24]1([C:2]2[CH:10]=[C:9]([C:2]3[CH:10]=[CH:9][CH:8]=[CH:7][CH:3]=3)[CH:8]=[C:7]3[C:3]=2[C:4]([CH2:17][CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20])=[C:5]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[NH:6]3)[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1

참가 물질

6

반응물 3

HCID 66827Phenylboronic AcidHCID 18407952Tripotassium phosphate trihydrateHCID 71280731ethyl 4,6-dibromo-3-(3-ethoxy-3-oxopropyl)-1H-indole-2-carboxylate

생성물 1

HCID 71281244Ethyl 4,6-diphenyl-3-(3-ethoxy-3-oxopropyl)-1H-indole-2-carboxylate

시약·촉매·용매 2

HCID 178418476HCID 178418476, 화합물촉매HCID 312751,4-Dioxane용매

실험 절차

Ethyl 4,6-dibromo-3-(3-ethoxy-3-oxopropyl)-1H-indole-2-carboxylate (0.244 g, 0.5 mmol), phenylboronic acid (0.147 g, 1.2 mmol, 2.4 equiv.) and potassium phosphate trihydrate (0.400 g, 1.5 mmol, 3.0 equiv.) were mixed together in a 10 ml microwave vial. The vial was purged with Argon and trans-dichlorobis(triphenylphosphine)-palladium (II) (0.021, 0.03 mmol, 6 mol %) and 5 ml of dry dioxane were added to the mixture. The microwave vial was capped and irradiated at 100 watt, 150° C., under pressure up to 10 bars. Then it was allowed to cool down to rt, and toluene was removed under reduced pressure and the residue was dissolved in dichloromethane and washed with water. The organic layer was dried over magnesium sulfate, filtered, and evaporated to dryness. The residue was purified by silica gel column chromatography using 20% of ethyl acetate/cyclohexane as eluent to yield a light-beige-colored solid in 60-70%. 1H-NMR (DMSO-d6) δ 1.09, 1.32 (each t, 3H, 3J=7.1 Hz, CH3); 2.11 (m, 2H, 2′-H); 2.84 (m, 2H, 1′-H); 3.89, 4.33 (each q, 2H, 4J=7.1 Hz, CH2); 7.12 (d, 1H, 2J=1.6 Hz, 7-H); 7.35 (t, 1H, 3J=7.4 Hz, Ph-ring); 7.43 (m, 7H, Ph-ring); 7.67 (d, 1H, 2J=0.9 Hz, 5-H); 7.68 (d, 1H, 2J=1.6 Hz, Phenyl-ring); 11.84 (s, 1H, NH). 13C-NMR (DMSO-d6) δ 14.2, 14.3 (2CH3, each C═OOCH2CH3); 20.5 (C-2′); 34.8 (C-1′); 59.5, 60.5 (2CH2, each C═OOCH2CH3); 109.6 (C-5); 121.1 (C-7); 121.8 (C-3); 123.6 (C-2); 124.7 (C-3a); 127.0 (C-2″, C-6″); 127.4 (C-4″′); 127.5 (C-4″); 128.0 (C-3′″, C-5″′); 129.0 (C-3″, C-5″); 129.1 (C-2′″, C-6″′); 136.7 (C-7a); 137.4 (C-4), 137.6 (C-6); 140.7 (C-1″); 140.8 (C-1′″); 161.5 (2′-CO2Et); 171.7 (2-CO2Et). LC-MS (m/z): 442 [M]+, 440 [M]−. Purity (LC-MS): 96%.

후처리

  1. additionwere added to the mixture
  2. customThe microwave vial was capped
  3. customirradiated at 100 watt, 150° C., under pressure up to 10 bars
  4. customtoluene was removed under reduced pressure
  5. dissolutionthe residue was dissolved in dichloromethane
  6. washwashed with water
  7. dry with materialThe organic layer was dried over magnesium sulfate
  8. filtrationfiltered
  9. customevaporated to dryness
  10. customThe residue was purified by silica gel column chromatography
  11. customto yield a light-beige-colored solid in 60-70%

출처 및 근거

ORD 기록
ord-86e36fa87ffa4f9f9edbbe849b314c7a
출처 데이터셋
uspto-grants-2013_03
특허 번호
US08404436B1

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