Ethyl Acetate → (S)-tert-butyl 3-(3-carbamoyl-6-phenylpyrrolo[1,2-b]pyridazin-4-ylamino)piperidine-1-carboxylate

HRID 877725노트

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HRID 877725 반응식
Br[C:2]1[CH:3]=[C:4]2[C:9]([NH:10][C@H:11]3[CH2:16][CH2:15][CH2:14][N:13]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:12]3)=[C:8]([C:24](=[O:26])[NH2:25])[CH:7]=[N:6][N:5]2[CH:27]=1.[C:28]1(B(O)O)[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+].C(OCC)(=O)C>CN(C=O)C.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[C:24]([C:8]1[CH:7]=[N:6][N:5]2[CH:27]=[C:2]([C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=3)[CH:3]=[C:4]2[C:9]=1[NH:10][C@H:11]1[CH2:16][CH2:15][CH2:14][N:13]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:12]1)(=[O:26])[NH2:25]

참가 물질

7

반응물 4

HCID 8857Ethyl AcetateHCID 62657Potassium Phosphate, TribasicHCID 66827Phenylboronic AcidHCID 68291502(S)-tert-butyl 3-(6-bromo-3-carbamoylpyrrolo[1,2-b]pyridazin-4-ylamino)piperidine-1-carboxylate

생성물 1

HCID 68291570(S)-tert-butyl 3-(3-carbamoyl-6-phenylpyrrolo[1,2-b]pyridazin-4-ylamino)piperidine-1-carboxylate수율 85.1%

시약·촉매·용매 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 6228Dimethylformamide용매

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온도
130 °C

실험 절차

A solution of (S)-tert-butyl 3-(6-bromo-3-carbamoylpyrrolo[1,2-b]pyridazin-4-ylamino)piperidine-1-carboxylate (75 mg, 0.17 mmol), phenylboronic acid (31.3 mg, 0.26 mmol), and PdCl2(dppf) 6.3 mg, (0.009 mmol) in DMF (1.5 mL) was added aq. K3PO4 (2M, 0.26 mL) then heated at 130° C. for 25 min. The mixture was poured into ethyl acetate (with 20% heptane) and washed with water then sat. aq. NaHCO3. The organic layer was dried over Na2SO4, filtered and concentrated. The crude product was purified via column chromatography (50-75% ethyl acetate in heptane) to afford the title compound (63 mg, 85% yield). LCMS 436.16 (M+H)+; HPLC (conditions L): retention time=4.02 min.

후처리

  1. washwashed with water
  2. dry with materialThe organic layer was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe crude product was purified via column chromatography (50-75% ethyl acetate in heptane)

출처 및 근거

ORD 기록
ord-0e2edb18cfec491eaf24570dc83d7091
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08987268B2

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