Sodium Carbonate → HCID 58827084, 화합물

HRID 76870노트

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HRID 76870 반응식
Br[C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[CH:10]1[N:14]2[CH:15]=[N:16][CH:17]=[C:13]2[CH2:12][CH2:11]1)[C:5]#[N:6].[CH3:18]B1OB(C)OB(C)O1.C([O-])([O-])=O.[Na+].[Na+].[OH-].[K+]>COCCOC.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>[CH:17]1[N:16]=[CH:15][N:14]2[CH:10]([C:9]3[CH:8]=[CH:7][C:4]([C:5]#[N:6])=[CH:3][C:2]=3[CH3:18])[CH2:11][CH2:12][C:13]=12

참가 물질

7

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HCID 10340Sodium CarbonateHCID 14797Potassium HydroxideHCID 574072TrimethylboroxineHCID 588270573-bromo-4-(6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-5-yl)benzonitrile

생성물 1

HCID 58827084HCID 58827084, 화합물

시약·촉매·용매 2

HCID 178418397HCID 178418397, 화합물촉매HCID 80711,2-Dimethoxyethane용매

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온도
130 °C

실험 절차

To a solution of 3-bromo-4-(6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-5-yl)benzonitrile (0.100 g, 0.347 mmol) given in Example 3 (table 2) and trimethylboroxine (0.145 g, 1.04 mmol) in DME (3 mL); aqueous solutions of Na2CO3 (0.69 mL, 2 M) and KOH (0.17 mL, 2 M) are added. After degassing with nitrogen, Pd(PPh3)4 (0.040 g, 0.035 mmol) is added. The mixture is heated in a microwave reactor at 130° C. 1.5 h. At that point LCMS showed consumption of the starting material. The solution is diluted with ethyl acetate and saturated sodium bicarbonate. The resulting aqueous layer is extracted further with ethyl acetate (3×). The combined organic layers are washed with brine and dried over anhydrous sodium sulfate. After concentration the crude product is filtered through 0.45 μm filter and then purified by preparative HPLC (0% for 5 minutes and 0-34% acetonitrile with 0.1% TFA in 17 minutes). MS (ESI) m/z 224.0 (M+H); 1H NMR (400 MHz, CDCl3) δ ppm 2.33-2.42 (m, 1H), 2.43 (s, 3H), 2.84-2.95 (m, 2H), 3.07-3.18 (m, 1H), 5.54 (dd, J=8.1, 4.8 Hz, 1H), 6.65 (d, J=8.1 Hz, 1H), 6.83 (s, 1H), 7.32 (s, 1H), 7.41 (d, J=8:1 Hz, 1H), 7.50 (s, 1H). Resolution of the (R) and (S) enantiomers of the title compound is achieved by chiral HPLC using ChiralPak AS-H column and 9:1 hexane/EtOH to give enantiomer A (tr=84 min) and enantiomer B (tr=104 min).

후처리

  1. additionis added
  2. custom1.5 h
  3. customconsumption of the starting material
  4. additionThe solution is diluted with ethyl acetate and saturated sodium bicarbonate
  5. extractionThe resulting aqueous layer is extracted further with ethyl acetate (3×)
  6. washThe combined organic layers are washed with brine
  7. dry with materialdried over anhydrous sodium sulfate
  8. concentrationAfter concentration the crude product
  9. filtrationis filtered through 0.45 μm
  10. filtrationfilter
  11. custompurified by preparative HPLC (0% for 5 minutes and 0-34% acetonitrile with 0.1% TFA in 17 minutes)
  12. customto give enantiomer A (tr=84 min) and enantiomer B (tr=104 min)

출처 및 근거

ORD 기록
ord-2bb54e06432246238f878e58536f5fac
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08835646B2

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