Nitromethane → HCID 11446856, 화합물

HRID 1796837노트

반응식

HRID 1796837 반응식
[CH3:1][O:2][C:3](=[O:13])[C:4]([C:11]#[N:12])=[C:5]1[CH2:10][CH2:9][CH2:8][CH2:7][CH2:6]1.[N+]([CH3:17])([O-])=O.C1CCN2C(=NCCC2)CC1>C(#N)C.CCOCC>[CH3:1][O:2][C:3]([C:4]1([C:11]#[N:12])[C:5]2([CH2:6][CH2:7][CH2:8][CH2:9][CH2:10]2)[CH2:17]1)=[O:13]

참가 물질

6

반응물 3

HCID 6375NitromethaneHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 11229121CYANO-CYCLOHEXYLIDENE-ACETIC ACID METHYL ESTER

생성물 1

HCID 11446856HCID 11446856, 화합물수율 86%

시약·촉매·용매 2

HCID 3283Diethyl Ether용매HCID 6342Acetonitrile용매

실험 절차

To a solution of cyano-cyclohexylidene-acetic acid methyl ester (20.0 g, 112 mmol) in acetonitrile (400 mL) was added nitromethane (30 mL, 558 mmol) followed by dropwise addition of DBU (16.9 mL, 113 mmol) over five minutes. The solution went from clear to orange and was stirred at room temperature for 5.5 hours. The solution was diluted with ether (1 L), washed with 1N HCl (2×250 mL) and then brine (2×250 mL). The organic layer was dried over sodium sulfate, filtered and evaporated. The residue was chromatographed on a wet-packed silica gel column (6.5×40 cm) eluting with 95:5 hexanes/ethyl acetate. The appropriate fractions were combined and evaporated to give 18.6 g (86%) of 1-cyano-spiro[2.5]octane-1-carboxylic acid methyl ester as a clear oil: 1H NMR (300 MHz, CDCl3) δ 1.35 (m, 1H), 1.49 (d, J=5.0 Hz, 1H), 1.5–1.75 (m, 9H), 1.82 (d, J=5.0 Hz, 1H), 3.83 (s, 3H).

후처리

  1. washwashed with 1N HCl (2×250 mL)
  2. dry with materialThe organic layer was dried over sodium sulfate
  3. filtrationfiltered
  4. customevaporated
  5. customThe residue was chromatographed on a wet-packed silica gel column (6.5×40 cm)
  6. washeluting with 95:5 hexanes/ethyl acetate
  7. customevaporated

출처 및 근거

ORD 기록
ord-f503274519404b21ae8dc96ef98500b3
출처 데이터셋
uspto-grants-2006_04
특허 번호
US07030267B2

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