Dimethyl-2,6-naphthalenedicarboxylate → 2,6-Naphthalenedicarboxylic acid

HRID 864683

반응식

HRID 864683 반응식
C[O:2][C:3]([C:5]1[CH:14]=[CH:13][C:12]2[C:7](=[CH:8][CH:9]=[C:10]([C:15]([O:17]C)=[O:16])[CH:11]=2)[CH:6]=1)=[O:4]>[Cr].[Co]>[CH:11]1[C:12]2[C:7](=[CH:6][C:5]([C:3]([OH:4])=[O:2])=[CH:14][CH:13]=2)[CH:8]=[CH:9][C:10]=1[C:15]([OH:17])=[O:16]

참가 물질

3

반응물 1

HCID 61225Dimethyl-2,6-naphthalenedicarboxylate2회

생성물 1

HCID 143572,6-Naphthalenedicarboxylic acid

시약·촉매·용매 1

HCID 11332432Hastelloy C촉매

실험 절차

Dimethyl-2,6-naphthalenedicarboxylate was hydrolyzed at elevated temperatures and elevated pressures in the batch-mode in a stirred, 300 ml Hastelloy C autoclave reactor. 37.5 Grams of dimethyl-2,6-naphthalenedicarboxylate were charged to the reactor. No catalyst was used. The 2,6-NDA product was separated from the mother liquor by filtration at room temperature followed by washing with about 150 grams of water. The reaction time, temperature, pressure and analysis of the resulting 2,6-naphthalenedicarboxylic acid are provided in Table 2. Dudng each of the runs reported in Table 2, approximately one-half of the solvent was unintentionally lost. This loss of solvent likely caused the removal of methanol from the reaction mixture thereby shifting the equilibrium towards 2,6-naphthalenedicarboxylic acid. Runs 1, 2 and 3 reported in Table 2 were run consecutively in the same autoclave reactor.

후처리

  1. customThe 2,6-NDA product was separated from the mother liquor by filtration at room temperature
  2. washby washing with about 150 grams of water

출처 및 근거

ORD 기록
ord-85a7d68a964140e780424db42621ee73
출처 데이터셋
uspto-grants-1996_10
특허 번호
US05563294

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