Formaldehyde → 5-Acetyl-2,6-dimethyl-1,4-dihydro-pyridine-3-carbonitrile

HRID 551559노트

반응식

HRID 551559 반응식
[CH3:1]/[C:2](/[NH2:6])=[CH:3]\[C:4]#[N:5].[CH3:7][C:8](=O)[CH2:9][C:10](=[O:12])[CH3:11].[CH2:14]=O>N1CCCCC1.C(O)C>[C:10]([C:9]1[CH2:14][C:3]([C:4]#[N:5])=[C:2]([CH3:1])[NH:6][C:8]=1[CH3:7])(=[O:12])[CH3:11]

참가 물질

6

반응물 3

HCID 712FormaldehydeHCID 31261AcetylacetoneHCID 53247203-Aminocrotonitrile

생성물 1

HCID 671047185-Acetyl-2,6-dimethyl-1,4-dihydro-pyridine-3-carbonitrile수율 59.1%

시약·촉매·용매 2

HCID 8082Piperidine촉매HCID 702Ethanol용매

실험 절차

A mixture of 3-aminocrotonitrile (2.0 g, 24 mmol), 2,4-pentanedione (4.9 g, 49 mmol), paraformaldehyde (1.5 g, 49 mmol) and piperidine (12 drops) in ethanol (100 mL) was heated to reflux for 4 hours, cooled and concentrated to dryness. The residue was treated with diethyl ether (150 mL). The solid was collected and washed with ether. The solid was triturated with dichloromethane (2×100 mL). The combined dichloromethane triturations were concentrated to provide 2.5 g of the title compound. 1H NMR (DMSO-d6) δ ppm 1.92 (t, J=1.02 Hz, 3 H), 2.09 (s, 3 H), 2.10 (s, 3 H), 3.20 (s, 2 H), 8.65 (s, 1 H). MS (DCl-NH3) [M+H]+ at 177.

후처리

  1. temperaturewas heated
  2. temperatureto reflux for 4 hours
  3. temperaturecooled
  4. concentrationconcentrated to dryness
  5. additionThe residue was treated with diethyl ether (150 mL)
  6. customThe solid was collected
  7. washwashed with ether
  8. customThe solid was triturated with dichloromethane (2×100 mL)
  9. concentrationThe combined dichloromethane triturations were concentrated

출처 및 근거

ORD 기록
ord-6a20b9beb454439492f40b3cf539b7e2
출처 데이터셋
uspto-grants-2011_05
특허 번호
US07947711B2

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