1,3-Butadiene → 2,6-Dimethylnaphthalene

HRID 617625

반응식

HRID 617625 반응식
[CH3:1][C:2]1[C:7]2[CH:8]=CC=C(C)[C:6]=2[CH:5]=[CH:4][CH:3]=1.[CH2:13]=[CH:14][CH:15]=[CH2:16]>CC1C=CC=CC=1C>[CH3:13][C:14]1[CH:6]=[CH:5][C:4]2[CH:3]=[C:2]([CH3:1])[CH:7]=[CH:8][C:16]=2[CH:15]=1

참가 물질

4

반응물 2

HCID 78451,3-ButadieneHCID 113061,5-Dimethylnaphthalene2회

생성물 1

HCID 113872,6-Dimethylnaphthalene

시약·촉매·용매 1

HCID 7237O-Xylene용매

실험 절차

The present inventors synthesized 1,5-DMN from o-xylene and butadiene as the starting raw materials and isomerized the resultant 1,5-DMN to obtain the mixture of isomers consisting essentially of 1,5-, 1,6- and 2,6-DMNs, which was cooled as it is to precipitate 2,6-DMN crystal in the form of scale. The crystal thus obtained was poor in the efficiency of separation from the mother liquor at the time of filtration, whereby it was difficult to obtain highly pure 2,6-DMN. As is the case with the foregoing, 2,6-DMN crystal in the form of scale was obtained from the mixture of isomers containing 2,7-, 1,7-DMN, etc. other than 1,5-, 1,6- and 2,6-DMN as the starting raw material for crystallization, but it was extremely poor in filtration efficiency.

후처리

  1. customto obtain
  2. additionthe mixture of isomers
  3. temperature2,6-DMNs, which was cooled as it
  4. customto precipitate 2,6-DMN crystal in the form of scale
  5. customThe crystal thus obtained
  6. customwas poor in the efficiency of separation from the mother liquor at the time of filtration, whereby it

출처 및 근거

ORD 기록
ord-a4e82ec4219f4f7aa3863c06354f3ddf
출처 데이터셋
uspto-grants-1999_09
특허 번호
US05948949

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