Potassium Iodide → 2-{[(4-tert-Butoxycarbonylamino-butyl)-(3,4-dihydro-2H-pyrano[3,2-b]pyridin-4-yl)-amino]-methyl}-benzimidazole-1-carboxylic acid tert-butyl ester

HRID 899671노트

반응식

HRID 899671 반응식
[C:1]([O:5][C:6](=[O:23])[NH:7][CH2:8][CH2:9][CH2:10][CH2:11][NH:12][CH:13]1[C:18]2=[N:19][CH:20]=[CH:21][CH:22]=[C:17]2[O:16][CH2:15][CH2:14]1)([CH3:4])([CH3:3])[CH3:2].C(N(CC)C(C)C)(C)C.[C:33]([O:37][C:38]([N:40]1[C:44]2[CH:45]=[CH:46][CH:47]=[CH:48][C:43]=2[N:42]=[C:41]1[CH2:49]Cl)=[O:39])([CH3:36])([CH3:35])[CH3:34].[I-].[K+]>CC#N>[C:33]([O:37][C:38]([N:40]1[C:44]2[CH:45]=[CH:46][CH:47]=[CH:48][C:43]=2[N:42]=[C:41]1[CH2:49][N:12]([CH2:11][CH2:10][CH2:9][CH2:8][NH:7][C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:23])[CH:13]1[C:18]2=[N:19][CH:20]=[CH:21][CH:22]=[C:17]2[O:16][CH2:15][CH2:14]1)=[O:39])([CH3:36])([CH3:35])[CH3:34]

참가 물질

6

반응물 4

HCID 4875Potassium IodideHCID 81531DiisopropylethylamineHCID 15829159tert-Butyl 2-(chloromethyl)-1H-benzimidazole-1-carboxylateHCID 69296245[4-(3,4-Dihydro-2H-pyrano[3,2-b]pyridin-4-ylamino)-butyl]-carbamic acid tert-butyl ester

생성물 1

HCID 691565352-{[(4-tert-Butoxycarbonylamino-butyl)-(3,4-dihydro-2H-pyrano[3,2-b]pyridin-4-yl)-amino]-methyl}-benzimidazole-1-carboxylic acid tert-butyl ester수율 67.5%

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

To a solution of [4-(3,4-Dihydro-2H-pyrano[3,2-b]pyridin-4-ylamino)-butyl]-carbamic acid tert-butyl ester (329 mg, 1.02 mmol) in CH3CN (5 mL) was added N,N-diisopropylethylamine (0.28 mL, 1.63 mmol) followed by 2-chloromethyl-benzimidazole-1-carboxylic acid tert-butyl ester (328 mg, 1.23 mmol) and potassium iodide (20 mg, 0.1 mmol). The resultant mixture was heated to 60° C. for 16 hours then cooled to room temperature. The mixture was concentrated and the residue was partitioned between CH2Cl2 (25 mL) and saturated aqueous NaHCO3 (20 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (2×15 mL). The combined organic extracts were dried (Na2SO4), filtered, and concentrated. Purification of the crude material by flash column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 95:4:1) provided 2-{[(4-tert-Butoxycarbonylamino-butyl)-(3,4-dihydro-2H-pyrano[3,2-b]pyridin-4-yl)-amino]-methyl}-benzimidazole-1-carboxylic acid tert-butyl ester (380 mg, 67%) as a white foam.

후처리

  1. concentrationThe mixture was concentrated
  2. customthe residue was partitioned between CH2Cl2 (25 mL) and saturated aqueous NaHCO3 (20 mL)
  3. customThe phases were separated
  4. extractionthe aqueous phase was extracted with CH2Cl2 (2×15 mL)
  5. dry with materialThe combined organic extracts were dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customPurification of the crude material by flash column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 95:4:1)

출처 및 근거

ORD 기록
ord-eb5458fd479f4eacafcc48202422c1a6
출처 데이터셋
uspto-grants-2008_04
특허 번호
US07354932B2

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