Lithium Hydroxide → 8-(Aminomethyl)naphthalene-2-carboxylic acid

HRID 1682522

Reaktionsgleichung

Reaktionsgleichung von HRID 1682522
[NH2:1][CH2:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[CH:11]=[C:10]([C:13]([O:15]C)=[O:14])[CH:9]=[CH:8]2.[OH-].[Li+]>O1CCCC1>[NH2:1][CH2:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[CH:11]=[C:10]([C:13]([OH:15])=[O:14])[CH:9]=[CH:8]2

Komponenten

4

Edukt 2

HCID 3939Lithium Hydroxide2×HCID 14731550Methyl 8-(aminomethyl)naphthalene-2-carboxylate

Produkt 1

HCID 147565638-(Aminomethyl)naphthalene-2-carboxylic acidAusbeute 95 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

Part C--To a solution of methyl 8-aminomethyl-2-naphthoate (0.75 g, 0.0035 mol) in dry tetrahydrofuran (50 mL), cooled to 0° C., was added a solution of lithium hydroxide (0.5M, 5.83 mL). All was stirred at ambient temperature over 20 hours. Another aliquot of lithium hydroxide was added and all was stirred for an additional 20 hours. The solid was collected and the filtrate was evaporated to dryness under reduced pressure. The solids were triturated with diethyl ether to give 8-aminomethyl-2-naphthoic acid (0.67 g, 0.0033 mol, 95%) as a white solid. mp=223°-225° C.; 1H NMR (DMSO) d 8.6 (s, 1H), 8.1-7.9 (m, 1H), 7.8-7.7 (m, 4H), 7.55-7.5 (m, 1H), 7,45-7.35 (m, 2H), 4.2 (s, 2H).

Aufarbeitung

  1. stirringall was stirred for an additional 20 hours
  2. customThe solid was collected
  3. customthe filtrate was evaporated to dryness under reduced pressure
  4. customThe solids were triturated with diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-79ebdd1e04094765b5db59826dd52fe3
Quelldatensatz
uspto-grants-1997_06
Patentnummer
US05635477

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