Sodium Carbonate → HCID 90411390, 화합물

HRID 2175945노트

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HRID 2175945 반응식
Br[C:2]1[CH:12]=[CH:11][CH:10]=[C:9]([O:13][CH3:14])[C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5].[CH3:15][N:16]1[C:20](B2OC(C)(C)C(C)(C)O2)=[C:19]([CH3:30])[CH:18]=[N:17]1.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:15][N:16]1[C:20]([C:2]2[CH:12]=[CH:11][CH:10]=[C:9]([O:13][CH3:14])[C:3]=2[C:4]([O:6][CH2:7][CH3:8])=[O:5])=[C:19]([CH3:30])[CH:18]=[N:17]1

참가 물질

7

반응물 3

HCID 10340Sodium CarbonateHCID 46311273Ethyl 2-bromo-6-methoxybenzoateHCID 578266761,4-dimethyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

생성물 1

HCID 90411390HCID 90411390, 화합물수율 95.2%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 962Water용매HCID 80711,2-Dimethoxyethane용매

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온도
100 °C

실험 절차

In a microwave vial was dissolved ethyl 2-bromo-6-methoxybenzoate (500 mg, 1.54 mmol) and 1,4-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (377 mg, 1.70 mmol) in DME (10 mL) and water (2 mL). Na2CO3 (259 mg, 3.09 mmol) was then added followed by Pd(PPh3)4 (89 mg, 0.077 mmol) and the reaction mixture was degassed with N2 for 10 minutes. The reaction mixture was then heated at 100° C. for 1 h in the microwave. The mixture was cooled to room temperature, filtered through Celite and washed with EtOAc and DCM. The crude solution was concentrated in vacuo and directly purified via silica gel chromatography (10-80% EtOAc in hexanes) to afford the title compound (402 mg, 95%). MS (ESI) mass calcd. for C15H18N2O3, 274.1; m/z found 275.2 [M+H]+. 1H NMR (400 MHz, Chloroform-d) 7.45 (dd, J=8.4, 7.6 Hz, 1H), 7.29 (s, 1H), 7.04 (dd, J=8.5, 0.9 Hz, 1H), 6.84 (dd, J=7.6, 0.9 Hz, 1H), 4.07 (qd, J=7.2, 1.5 Hz, 2H), 3.90 (s, 3H), 3.61 (s, 3H), 1.86 (s, 3H), 1.01 (t, J=7.1 Hz, 3H).

후처리

  1. customthe reaction mixture was degassed with N2 for 10 minutes
  2. temperatureThe mixture was cooled to room temperature
  3. filtrationfiltered through Celite
  4. washwashed with EtOAc and DCM
  5. concentrationThe crude solution was concentrated in vacuo
  6. customdirectly purified via silica gel chromatography (10-80% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-b93ddc4577a34e5fbfec4ab884b79ef5
출처 데이터셋
uspto-grants-2015_06
특허 번호
US09062078B2

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