Hydrochloric Acid → 5-Bromo-4'-methoxy-3H-spiro[benzofuran-2,1'-cyclohexan]-3-imine

HRID 1770958

반응식

HRID 1770958 반응식
[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:16][C:8]3([CH2:13][CH2:12][CH:11]([O:14][CH3:15])[CH2:10][CH2:9]3)[C:7](=[N:17]S(C(C)(C)C)=O)[C:6]=2[CH:24]=1.Cl.CCOCC>O1CCOCC1>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:16][C:8]3([CH2:9][CH2:10][CH:11]([O:14][CH3:15])[CH2:12][CH2:13]3)[C:7](=[NH:17])[C:6]=2[CH:24]=1

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 3283Diethyl EtherHCID 67979520N-(5-Bromo-4'-methoxy-3H-spiro[benzofuran-2,1'-cyclohexane]-3-ylidene)-2-methylpropane-2-sulfinamide

생성물 1

HCID 679795445-Bromo-4'-methoxy-3H-spiro[benzofuran-2,1'-cyclohexan]-3-imine수율 91.4%

시약·촉매·용매 1

HCID 312751,4-Dioxane용매2회

실험 절차

To a solution of N-(5-bromo-4′-methoxy-3H-spiro[benzofuran-2,1′-cyclohexane]-3-ylidene)-2-methylpropane-2-sulfinamide (Example 29 Step 1, 2 g, 4.83 mmol) in anhydrous 1,4-dioxane (40 mL) was added 4M HCl in 1,4-dioxane (12.07 mL, 48.27 mmol) and the resulting mixture was stirred under a nitrogen atmosphere at rt overnight. Et2O (30 mL) was added and the precipitate was filtered off and washed with Et2O, then partitioned between DCM (40 mL) and sat. aq. NaHCO3 (40 mL). The phases were separated and the organic layer concentrated, yielding 1.37 g of the crude title compound which was used immediately in the next step: MS (EI) m/z 309 M+.

후처리

  1. filtrationthe precipitate was filtered off
  2. washwashed with Et2O
  3. custompartitioned between DCM (40 mL) and sat. aq. NaHCO3 (40 mL)
  4. customThe phases were separated
  5. concentrationthe organic layer concentrated

출처 및 근거

ORD 기록
ord-3febc73c012241a58e39d24b34a7cb37
출처 데이터셋
uspto-grants-2016_02
특허 번호
US09248129B2

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