Hydrochloric Acid → 2-Amino-6-methyl-4-oxo-4H-pyran-3-carbonitrile

HRID 1501215노트

반응식

HRID 1501215 반응식
[C:1](#[N:5])[CH2:2][C:3]#[N:4].[H-].[Na+].[CH2:8]=[C:9]1[O:13][C:11](=[O:12])[CH2:10]1.Cl>O1CCCC1>[NH2:4][C:3]1[O:13][C:9]([CH3:8])=[CH:10][C:11](=[O:12])[C:2]=1[C:1]#[N:5]

참가 물질

6

반응물 4

HCID 313Hydrochloric AcidHCID 8010MalononitrileHCID 12661DiketeneHCID 24758Sodium hydride

생성물 1

HCID 114805352-Amino-6-methyl-4-oxo-4H-pyran-3-carbonitrile

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of malononitrile (3.3 g, 50 mmol) in 100 mL of anhydrous tetrahydrofuran was added sodium hydride (60%, 2.2 g, 55 mmol) at −10° C. The resulting reaction mixture was stirred for 2 hours. Then diketene (4.2 g, 50 mmol) was added dropwise to the solution. The reaction mixture was allowed to warmed to room temperature and continued to stir for 30 minutes. The mixture was neutralized with diluted hydrochloric acid, and then concentrated in vacuo to give crude 2-amino-6-methyl-4-oxo-4H-pyran-3-carbonitrile as red solid, which was used in the next step without further purification.

후처리

  1. customThe resulting reaction mixture
  2. stirringto stir for 30 minutes
  3. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-a2069df2caf245e5a399ef5c3c617da0
출처 데이터셋
uspto-grants-2015_12
특허 번호
US09206128B2

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