Potassium Carbonate → 4-{2-[2-(2-Methyl-pyrrolidin-1-yl)-ethyl]-benzothiazol-5-yl}-benzonitrile

HRID 424939

반응식

HRID 424939 반응식
C([O-])([O-])=O.[K+].[K+].[F-].[Cs+].[C:9]([C:11]1[CH:16]=[CH:15][C:14](B(O)O)=[CH:13][CH:12]=1)#[N:10].Br[C:21]1[CH:22]=[CH:23][C:24]2[S:28][C:27]([CH2:29][CH2:30][N:31]3[CH2:35][CH2:34][CH2:33][CH:32]3[CH3:36])=[N:26][C:25]=2[CH:37]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C=CC=CC=2)CCCCC1>C1(C)C=CC=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:36][CH:32]1[CH2:33][CH2:34][CH2:35][N:31]1[CH2:30][CH2:29][C:27]1[S:28][C:24]2[CH:23]=[CH:22][C:21]([C:14]3[CH:15]=[CH:16][C:11]([C:9]#[N:10])=[CH:12][CH:13]=3)=[CH:37][C:25]=2[N:26]=1

참가 물질

8

반응물 5

HCID 11430Potassium CarbonateHCID 25953Cesium fluorideHCID 27342162-(Dicyclohexylphosphino)biphenylHCID 27343264-Cyanophenylboronic acidHCID 219800005-Bromo-2-[2-(2-methyl-pyrrolidin-1-yl)-ethyl]benzothiazole

생성물 1

HCID 219800314-{2-[2-(2-Methyl-pyrrolidin-1-yl)-ethyl]-benzothiazol-5-yl}-benzonitrile수율 31.5%

시약·촉매·용매 2

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 1140Toluene용매

반응 조건

온도
90 °C

실험 절차

To a reaction flask containing K2CO3 (0.326 g, 1.5 mmol), CsF (0.233 g, 1.5 mmol), and (0.19 g, 1.3 mmol) of 4-cyanophenyl boronic acid was added a solution of 5-bromo-2-[2-(2-methyl-pyrrolidin-1-yl)-ethyl]-benzothiazole (0.25 g, 0.77 mmol) in 3 mL of toluene. The resulting mixture was purged with nitrogen, and then 2-dicyclohexylphosphinobiphenyl (54 mg, 0.15 mmol) and Pd2(dba)3 (70 mg, 0.08 mmol) were added. The resulting reaction mixture was then heated at 90° C. for 2 hr. At completion, the reaction was washed with water, then diluted with CH2Cl2, and purified by column chromatography (silica gel, 10% MeOH/CH2Cl2), to give 4-{2-[2-(2-methyl-pyrrolidin-1-yl)-ethyl]-benzothiazol-5-yl}-benzonitrile in an isolated yield of 31.5%. The hydrochloride salt of the product was formed by adding 6N HCl (2 equivalents) in isopropanol solution and then diluting with 1 mL of isopropanol, followed by removal of solvent. 1H NMR (400 MHz, Methanol d4) δ 1.47 (d, J=6.45 Hz, 3 H) 1.72 (dd, J=12.76, 8.37 Hz, 1 H) 2.29 (m, 2 H) 3.23 (m, 3 H) 3.36 (t, J=7.14 Hz, 1 H) 3.62 (m, 3 H) 3.99 (m, 1 H) 7.68 (dd, J=8.44, 1.72 Hz, 1 H) 7.77 (m, 4 H) 8.01 (d, J=8.37 Hz, 1 H) 8.17 (d, J=1.51 Hz, 1 H) [M+H]+ at m/z 348.

후처리

  1. customThe resulting mixture was purged with nitrogen
  2. customThe resulting reaction mixture
  3. washAt completion, the reaction was washed with water
  4. additiondiluted with CH2Cl2
  5. custompurified by column chromatography (silica gel, 10% MeOH/CH2Cl2)

출처 및 근거

ORD 기록
ord-a6d269d1bfe849bf8614ad01fdcaf476
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08106088B2

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