Water → 1-BOC-3-(2-(imidazo[1,2-b]pyridazin-3-yl)ethynyl)piperidine

HRID 706847

반응식

HRID 706847 반응식
Br[C:2]1[N:6]2[N:7]=[CH:8][CH:9]=[CH:10][C:5]2=[N:4][CH:3]=1.[C:11]([N:18]1[CH2:23][CH2:22][CH2:21][CH:20]([C:24]#[CH:25])[CH2:19]1)([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12].CCN(C(C)C)C(C)C.O>CN(C=O)C.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.[Cu]I>[C:11]([N:18]1[CH2:23][CH2:22][CH2:21][CH:20]([C:24]#[C:25][C:2]2[N:6]3[N:7]=[CH:8][CH:9]=[CH:10][C:5]3=[N:4][CH:3]=2)[CH2:19]1)([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12]

참가 물질

8

반응물 4

HCID 962WaterHCID 81531DiisopropylethylamineHCID 128723193-Bromoimidazo(1,2-b)pyridazineHCID 21963855tert-Butyl 3-ethynylpiperidine-1-carboxylate

생성물 1

HCID 867095651-BOC-3-(2-(imidazo[1,2-b]pyridazin-3-yl)ethynyl)piperidine수율 60%

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 178418476HCID 178418476, 화합물촉매HCID 6228Dimethylformamide용매

실험 절차

A solution of 3-bromoimidazo[1,2-b]pyridazine (0.40 g, 2 mmol), 1-BOC-3-ethynylpiperidine (0.55 g, 2.6 mmol), Pd(PPh3)2Cl2 (70 mg, 0.1 mmol), CuI (29 mg, 0.15 mmol), and DIPEA (0.39 g, 3 mmol) in DMF (20 mL) was stirred at 80° C. under Ar2 for 6 hrs. The mixture was poured into 100 mL water, extracted with EtOAc (60 mL×3), organic layer was washed with brine, dried with Na2SO4, filtered, and the filtrate was evaporated in vacuo. The crude product was purified by chromatography on silica gel (PE/EtOAc 7:3 to 3:2) to give 0.39 g product as yellow oil (60.0%). 1H NMR (300 MHz, CDCl3) δ: 8.50 (1 H, d, J=4.2 Hz), 7.98-8.08 (2 H, m), 7.13-7.17 (1 H, dd, J=4.5 and 8.7 Hz), 4.09 (1 H, brs), 3.76-3.82 (1 H, m), 3.19 (1 H, brs), 3.02-3.09 (1 H, m), 2.81-2.88 (1 H, m), 2.32 (1 H, brs), 2.11-2.15 (1 H, m), 1.67-1.81 (2 H, m), 1.46 (9 H, s). LCMS: m/z [M+H]+ 327.2112.

후처리

  1. extractionextracted with EtOAc (60 mL×3), organic layer
  2. washwas washed with brine
  3. dry with materialdried with Na2SO4
  4. filtrationfiltered
  5. customthe filtrate was evaporated in vacuo
  6. customThe crude product was purified by chromatography on silica gel (PE/EtOAc 7:3 to 3:2)

출처 및 근거

ORD 기록
ord-72f5bbf20e1e4a2fb0d011f19aef1de5
출처 데이터셋
uspto-grants-2015_11
특허 번호
US09174996B2

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