Dimethyl acetylenedicarboxylate → 1-(3,4-Diethoxyphenyl)-2,3-bis(methoxycarbonyl)-4-hydroxy-6,7,8-trimethoxynaphthalene

HRID 622459

Reaktionsgleichung

Reaktionsgleichung von HRID 622459
CO[CH:3]([O:17]C)[C:4]1[CH:9]=[C:8]([O:10][CH3:11])[C:7]([O:12][CH3:13])=[C:6]([O:14][CH3:15])[C:5]=1Br.[CH2:19]([O:21][C:22]1[CH:23]=[C:24]([CH:27]=[CH:28][C:29]=1[O:30][CH2:31][CH3:32])[CH:25]=O)[CH3:20].[C:33]([C:39]([O:41][CH3:42])=[O:40])#[C:34][C:35]([O:37][CH3:38])=[O:36]>>[CH2:19]([O:21][C:22]1[CH:23]=[C:24]([C:25]2[C:5]3[C:4](=[CH:9][C:8]([O:10][CH3:11])=[C:7]([O:12][CH3:13])[C:6]=3[O:14][CH3:15])[C:3]([OH:17])=[C:34]([C:35]([O:37][CH3:38])=[O:36])[C:33]=2[C:39]([O:41][CH3:42])=[O:40])[CH:27]=[CH:28][C:29]=1[O:30][CH2:31][CH3:32])[CH3:20]

Komponenten

4

Edukt 3

HCID 12980Dimethyl acetylenedicarboxylateHCID 748473,4-DiethoxybenzaldehydeHCID 159144582-Bromo-3,4,5-trimethoxybenzaldehyde dimethylacetal

Produkt 1

HCID 139108231-(3,4-Diethoxyphenyl)-2,3-bis(methoxycarbonyl)-4-hydroxy-6,7,8-trimethoxynaphthalene

Versuchsvorschrift

2-Bromo-3,4,5-trimethoxybenzaldehyde dimethylacetal, 3,4-diethoxybenzaldehyde and dimethyl acetylenedicarboxylate are treated in the same manner as described in Example 1-(1) and (2), whereby 1-(3,4-diethoxyphenyl)-2,3-bis(methoxycarbonyl)-4-hydroxy-6,7,8-trimethoxynaphthalene is obtained as colorless crystals.

Quellen und Nachweise

ORD-Eintrag
ord-085c0ebf95bc4c4e87c79cc86b6cb75a
Quelldatensatz
uspto-grants-1988_09
Patentnummer
US04771072

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