Method for ethinylation of methyl iso-amyl ketone
Described is a method for the preparation of 2,5,8,11-tetramethyl-6-dodecyne-5,8-diol and/or 3,6-dimethyl-1- heptine-3-ol from methyl isoamyl ketone and acetylenic hydrocarbon. Reaction is performed in the presence of potassium alcoholate suspension in the environment of aromatic hydrocarbon at a te...
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Format | Patent |
Language | English Slovak |
Published |
07.12.2009
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Abstract | Described is a method for the preparation of 2,5,8,11-tetramethyl-6-dodecyne-5,8-diol and/or 3,6-dimethyl-1- heptine-3-ol from methyl isoamyl ketone and acetylenic hydrocarbon. Reaction is performed in the presence of potassium alcoholate suspension in the environment of aromatic hydrocarbon at a temperature of 0 to 60 °C and pressure of 70 to 130 kPa, whereby the molar ratio of potassium alcoholate to ketone or ketone and acetylenic hydrocarbon mixture is lower than 0.822. After ending reaction the mixture being hydrolyzed, neutralized and fractionated at a reduced pressure, whereby both products being isolated.
Je opísaný spôsob výroby 2,5,8,11-tetrametyl-6-dodecín-5,8- diolu a/alebo 3,6-dimetyl-1-heptin-3-olu z metylizoamylketónu a acetylénického uhľovodíka. Reakcia sa uskutočňuje v prítomnosti suspenzie alkoholátu draselného v prostredí aromatického uhľovodíka, pri teplote 0 až 60 °C a tlaku 70 až 130 kPa, pričom mólový pomer alkoholátu draselného ku ketónu alebo zmesi ketónu a acetylenického uhľovodíka je menší ako 0,822. Po ukončení reakcie sa zmes hydrolyzuje, neutralizuje a destiluje pri zníženom tlaku, pričom sa izolujú oba produkty. |
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AbstractList | Described is a method for the preparation of 2,5,8,11-tetramethyl-6-dodecyne-5,8-diol and/or 3,6-dimethyl-1- heptine-3-ol from methyl isoamyl ketone and acetylenic hydrocarbon. Reaction is performed in the presence of potassium alcoholate suspension in the environment of aromatic hydrocarbon at a temperature of 0 to 60 °C and pressure of 70 to 130 kPa, whereby the molar ratio of potassium alcoholate to ketone or ketone and acetylenic hydrocarbon mixture is lower than 0.822. After ending reaction the mixture being hydrolyzed, neutralized and fractionated at a reduced pressure, whereby both products being isolated.
Je opísaný spôsob výroby 2,5,8,11-tetrametyl-6-dodecín-5,8- diolu a/alebo 3,6-dimetyl-1-heptin-3-olu z metylizoamylketónu a acetylénického uhľovodíka. Reakcia sa uskutočňuje v prítomnosti suspenzie alkoholátu draselného v prostredí aromatického uhľovodíka, pri teplote 0 až 60 °C a tlaku 70 až 130 kPa, pričom mólový pomer alkoholátu draselného ku ketónu alebo zmesi ketónu a acetylenického uhľovodíka je menší ako 0,822. Po ukončení reakcie sa zmes hydrolyzuje, neutralizuje a destiluje pri zníženom tlaku, pričom sa izolujú oba produkty. |
Author | HOJC JAN JANCICH JOZEF MATISOVA MARTA HOMOLOVA IVANA BORISEK IGOR CHROMA VIOLA BENO LUBOS KAVALA MIROSLAV GROLMUS PETER KOMORA LADISLAV |
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DocumentTitleAlternate | Spôsob etinylácie metylizoamylketónu |
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Snippet | Described is a method for the preparation of 2,5,8,11-tetramethyl-6-dodecyne-5,8-diol and/or 3,6-dimethyl-1- heptine-3-ol from methyl isoamyl ketone and... |
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Title | Method for ethinylation of methyl iso-amyl ketone |
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