Acetic Acid → 3-Methyl-2,6-piperidinedione

HRID 75946노트

반응식

HRID 75946 반응식
OS(O)(=O)=O.[C:6]([OH:9])(=O)[CH3:7].[CH3:10][CH:11]([CH2:14]CC#N)[C:12]#[N:13].C([O-])([O-])=[O:19].[Na+].[Na+]>O>[CH3:10][CH:11]1[CH2:14][CH2:7][C:6](=[O:9])[NH:13][C:12]1=[O:19]

참가 물질

6

반응물 4

HCID 176Acetic Acid2회HCID 1118Sulfuric AcidHCID 10340Sodium CarbonateHCID 206862-Methylpentanedinitrile

생성물 1

HCID 346293-Methyl-2,6-piperidinedione수율 67%

시약·촉매·용매 1

HCID 962Water용매

반응 조건

온도
130 °C

실험 절차

A solution of H2SO4 (80 ml), acetic acid (500 ml) and 2-methylpentanedinitrile (128.0 g, 1184 mmol) was stirred at room temperature. An aqueous solution of acetic acid (100 ml in 32 ml water) was then added dropwise. Upon completion of the addition, the reaction was heated to 130° C. for 1 hour. The reaction was then allowed to cool to room temperature and filtered to remove solids, which were washed with acetic acid (100 ml). The filtrate was then concentrated until a residue resulted. This residue was poured into water (0.75 l), and adjusted to pH 5 with Na2CO3. The resulting solid was collected by filtration and washed with cold water to give the title compound (101 g, 67%) which was used without further purification.

후처리

  1. additionUpon completion of the addition
  2. temperatureto cool to room temperature
  3. filtrationfiltered
  4. customto remove solids, which
  5. washwere washed with acetic acid (100 ml)
  6. concentrationThe filtrate was then concentrated until a residue
  7. customresulted
  8. filtrationThe resulting solid was collected by filtration
  9. washwashed with cold water

출처 및 근거

ORD 기록
ord-faca0af8e1974591a4fb020f2178728c
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08835465B2

반응 노트

불러오는 중…