Methyl iodide → Butanoic acid, 2-ethyl-2-methyl-, methyl ester

HRID 1534050

Reaktionsgleichung

[CH2:1]([CH:3]([CH2:8][CH3:9])[C:4]([O:6][CH3:7])=[O:5])[CH3:2].[CH2:10]([Li])CCC.C(NC(C)C)(C)C.CI>>[CH2:1]([C:3]([CH3:10])([CH2:8][CH3:9])[C:4]([O:6][CH3:7])=[O:5])[CH3:2]

Komponenten

Edukt 4

HCID 6328Methyl iodide

HCID 7912Diisopropylamine

HCID 69951Methyl 2-ethylbutyrate

HCID 178418339Butyllithium

Produkt 1

HCID 521437Butanoic acid, 2-ethyl-2-methyl-, methyl ester

Versuchsvorschrift

A 16.5 Kg portion of methyl 2-ethylbutyrate was reacted with 60 Kg of n-butyl lithium, diisopropylamine, and 19.1 Kg of methyl iodide to provide 17.4 Kg of methyl 2-ethyl-2-methylbutyrate. A 7.5 Kg portion of the ester thus formed was reacted with 3.25 Kg of acetonitrile and 5.03 g of sodium hydride in 33 liters of tetrahydrofuran to provide 1-ethyl-1-methylpropyl cyanomethyl ketone. The ketone thus formed was reacted with 4.35 Kg of hydroxylamine hydrochloride and 2.54 Kg of sodium hydroxide in 44 liters of water to provide 5.65 Kg of 5-amino-3-(1-ethyl-1-methylpropyl)isoxazole.

Quellen und Nachweise

ORD-Eintrag: ord-6f1bc0f7cc94476ab4162da65e3d8eec
Quelldatensatz: uspto-grants-1992_02
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US05086184

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