Potassium Carbonate → tert-butyl 4-(2-(piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 1429576노트

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HRID 1429576 반응식
Br[C:2]1[CH:17]=[CH:16][C:5]2[N:6]=[C:7]([O:9][CH:10]3[CH2:15][CH2:14][NH:13][CH2:12][CH2:11]3)[S:8][C:4]=2[CH:3]=1.CC1(C)C(C)(C)OB([C:26]2[CH2:31][CH2:30][N:29]([C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[CH2:28][CH:27]=2)O1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.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>[NH:13]1[CH2:14][CH2:15][CH:10]([O:9][C:7]2[S:8][C:4]3[CH:3]=[C:2]([C:26]4[CH2:31][CH2:30][N:29]([C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[CH2:28][CH:27]=4)[CH:17]=[CH:16][C:5]=3[N:6]=2)[CH2:11][CH2:12]1

참가 물질

7

반응물 3

HCID 11430Potassium CarbonateHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 674668246-Bromo-2-(piperidin-4-yloxy)-benzothiazole

생성물 1

HCID 67468425tert-butyl 4-(2-(piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate수율 87.1%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 962Water용매2회HCID 312751,4-Dioxane용매

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온도
100 °C

실험 절차

To a degassed solution of 6-bromo-2-(piperidin-4-yloxy)benzo[d]thiazole (800 mg, 2.55 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (1.185 g, 3.83 mmol) and potassium carbonate (1.412 g, 10.22 mmol) in dioxane (21 mL) and water (7 mL) was added Pd(Ph3P)4 (148 mg, 0.128 mmol). The reaction mixture was stirred at 100° C. overnight. The mixture was cooled to rt, diluted with water (60 mL), and extracted with CH2Cl2 (3×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated. The residue was purified by column chromatography (silica gel, CH2Cl2-MeOH gradient 0 to 20% MeOH) to afford tert-butyl 4-(2-(piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridine-1(2H)-carboxylate (923 mg, 2.221 mmol, 87% yield) as a white foam. LCMS (m/z)=416 (M+H)+.

후처리

  1. temperatureThe mixture was cooled to rt
  2. extractionextracted with CH2Cl2 (3×30 mL)
  3. dry with materialThe combined organic layers were dried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by column chromatography (silica gel, CH2Cl2-MeOH gradient 0 to 20% MeOH)

출처 및 근거

ORD 기록
ord-1f420a8354524ec2a7f7ca9e1320c39b
출처 데이터셋
uspto-grants-2015_01
특허 번호
US08940716B2

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