Benzylamine → Diethyl 3-benzylamino-2-pentenedioate

HRID 1577072

Reaktionsgleichung

Reaktionsgleichung von HRID 1577072
[CH2:1]([NH2:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:9][CH2:10][O:11][C:12]([CH2:14][C:15]([CH2:17][C:18]([O:20][CH2:21][CH3:22])=[O:19])=O)=[O:13]>C1(C)C=CC=CC=1>[CH2:10]([O:11][C:12](=[O:13])[CH:14]=[C:15]([NH:8][CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)[CH2:17][C:18]([O:20][CH2:21][CH3:22])=[O:19])[CH3:9]

Komponenten

4

Edukt 2

HCID 7504BenzylamineHCID 66045Diethyl acetonedicarboxylate

Produkt 1

HCID 70353029Diethyl 3-benzylamino-2-pentenedioate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

Benzylamine (89.1 g, 0.83 moles) is added over 10 minutes to a suspension of 5A powdered molecular sieves (270 g) and diethyl 1,3-acetonedicarboxylate (160 g) (0.79 moles) in 350 ml toluene (external cooling applied to control exotherm). The suspension is stirred at room temperature for 14-17 hours and then filtered to provide 2. The filter cake is washed with three portions of toluene. The combined filtrates may be used as is in the subsequent ketene reaction.

Aufarbeitung

  1. filtrationfiltered
  2. customto provide 2
  3. washThe filter cake is washed with three portions of toluene
  4. customas is in the subsequent ketene reaction

Quellen und Nachweise

ORD-Eintrag
ord-1aabf18154c549f8913e6c10dcaffbcd
Quelldatensatz
uspto-grants-1981_09
Patentnummer
US04287123

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