DE1049841B - Process for the preparation of 1,1,3,3-tetramethylolbutanol- (2) - Google Patents
Process for the preparation of 1,1,3,3-tetramethylolbutanol- (2)Info
- Publication number
- DE1049841B DE1049841B DENDAT1049841D DE1049841DA DE1049841B DE 1049841 B DE1049841 B DE 1049841B DE NDAT1049841 D DENDAT1049841 D DE NDAT1049841D DE 1049841D A DE1049841D A DE 1049841DA DE 1049841 B DE1049841 B DE 1049841B
- Authority
- DE
- Germany
- Prior art keywords
- dioxane
- formaldehyde
- metli3
- draws
- meth3
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 36
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 125000000468 ketone group Chemical group 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 150000000185 1,3-diols Chemical class 0.000 claims description 3
- 125000000532 dioxanyl group Chemical group 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 claims description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims 2
- 150000007513 acids Chemical class 0.000 claims 1
- 150000002009 diols Chemical class 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000003638 reducing agent Substances 0.000 claims 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N acetic acid ethyl ester Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N iso-propanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QCDYQQDYXPDABM-UHFFFAOYSA-N Phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 235000019437 butane-1,3-diol Nutrition 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N butylene glycol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 3
- VDFVNEFVBPFDSB-UHFFFAOYSA-N 1,3-dioxane Chemical group C1COCOC1 VDFVNEFVBPFDSB-UHFFFAOYSA-N 0.000 description 2
- UHJLFCXOYRLBEO-UHFFFAOYSA-N 1-(5-methyl-1,3-dioxan-5-yl)ethanone Chemical compound CC(=O)C1(C)COCOC1 UHJLFCXOYRLBEO-UHFFFAOYSA-N 0.000 description 2
- 229960001553 Phloroglucinol Drugs 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N glycolaldehyde Chemical compound OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N Butanol Natural products CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L Mercury(I) chloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- RNCXCPUOPDATPU-UHFFFAOYSA-N [O-2].[Cr+3].[Cu]=O.[O-2].[O-2].[Cr+3] Chemical compound [O-2].[Cr+3].[Cu]=O.[O-2].[O-2].[Cr+3] RNCXCPUOPDATPU-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 methyl ethyl ketone 5-acetyl-5-methyl-1,3-dioxane Chemical compound 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 125000003198 secondary alcohol group Chemical group 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
- C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
Description
Verfahren zur Herstellung von 1,1,3,3-Tetramethylolbutanol-(2) Die Herstellung von 1,1,3,3-Tetramethylolbutanol-(2) ist bisher unbekannt. Die erschöpfende Oxyrnethylierung von Nlethyläthylketon in Gegenwart von mindestens 1 äquivalent Alkali- oder Erdalkalihydroxyd führt dagegen zu einem Gemisch verschiedener höherer Kondensationsprodukte, in denen 3,3,5-Trimethylol-5-methyltetrahydropyranol-(4) als Hauptprodukt vertreten ist.Process for the preparation of 1,1,3,3-tetramethylolbutanol- (2) Die The production of 1,1,3,3-tetramethylolbutanol- (2) is not yet known. The exhaustive one Oxyrnethylation of Nlethyläthylketon in the presence of at least 1 equivalent Alkali or alkaline earth hydroxide, on the other hand, leads to a mixture of different higher ones Condensation products in which 3,3,5-trimethylol-5-methyltetrahydropyranol- (4) is represented as the main product.
Es wurde nun gefunden, daß man zu einheitlichem 1,1,3,3-Tetrarrlethylolbutanol-(2) gelangt, wenn man das auf einfachem Wege und in guter ausbeute aus Methyläthylketon und Formaldehyd herstellbare 5-Acetyl-5-methyl-1,3-dioxan mit Formaldehyd zu 5-(a-Oxymethylfl-ox@propionyl)-5-methyl-1,3-dioxan umsetzt, die Ketogruppe zur sekundären Alkoholgruppe reduziert und den Dioxanring des erhaltenen 5-(a,y-Dioxy-/3-oxymethylpropyl)-5-methyl-1,3-dioxan öffnet.It has now been found that uniform 1,1,3,3-tetrarrlethylolbutanol- (2) if you get it in a simple way and in good yield from methyl ethyl ketone 5-acetyl-5-methyl-1,3-dioxane which can be prepared and formaldehyde with formaldehyde to give 5- (a-oxymethylfl-ox @ propionyl) -5-methyl-1,3-dioxane converts the keto group to the secondary alcohol group and the dioxane ring of the 5- (a, y-dioxy- / 3-oxymethylpropyl) -5-methyl-1,3-dioxane obtained opens.
Die Kondensation erfolgte erfindungsgemäß in einem Molverhältnis von 1 1Io1 5-Acetyl-5-methyl-1,3-dioxan zu 2 Mol Formaldehyd innerhalb eines alkalischen p"-Bereiches vom prt 9,5 bis 11 und bei niedrigen Temperaturen, vorzugsweise bei 10 bis 20°C in verdünnter wäßriger Lösung. Bei Nichtbeachtung dieser Arbeitsvorschrift wird ein uneinheitliches Kondensationsprodukt erhalten, das für den weiteren Synthesegang nicht verwendbar ist. Es ist überraschend, daß die Kondensation nach der Anlagerung von 2 1'1o1 Formaldehyd stehenbleibt, obwohl noch ein weiteres, zur Ketogruppe a-ständiges, aktives Wasserstoffatom vorhanden ist.According to the invention, the condensation was carried out in a molar ratio of 1 1Io1 5-acetyl-5-methyl-1,3-dioxane to 2 moles of formaldehyde within an alkaline p "range from prt 9.5 to 11 and at low temperatures, preferably at 10 to 20 ° C in dilute aqueous solution. If this work instruction is not observed a non-uniform condensation product is obtained, which is necessary for the further course of the synthesis is not usable. It is surprising that the condensation occurs after the addition of 2 1'1o1 formaldehyde remains, although there is still another, a-to the keto group, active hydrogen atom is present.
Die Reduktion der Ketogruppe des 5-(a-Oxymethyl-/3-oxy-propionyl)-5-methyl-1,3-dioxans kann entweder nach bekannten Verfahren, z. B. durch Druckhydrierung mit Wasserstoff und Kupferoxyd-Chromoxyd als Katalysator, oder erfindungsgemäß durch Umsatz mit Formaldehyd und Alkali- oder Erdalkahhydroxyd erfolgen. Überrasclien(-lerweise erfolgt unter diesen Reaktionsbedingungen außer der Reduktion der Ketogruppe keine «eitere Oxyniethylicrung des 5-(rc-Oxynietliyl-ß-oxypropiony,1)-5-metliyl-1,3-dioxans.The reduction of the keto group of 5- (a-oxymethyl- / 3-oxy-propionyl) -5-methyl-1,3-dioxane can either by known methods, e.g. B. by pressure hydrogenation with hydrogen and copper oxide-chromium oxide as a catalyst, or according to the invention by reacting with Formaldehyde and alkali or alkaline earth hydroxide. Überrasclien (- usually done under these reaction conditions, apart from the reduction of the keto group, no purulent ones Oxyniethylication of 5- (rc-Oxynietliyl-ß-oxypropiony, 1) -5-methyl-1,3-dioxane.
Die Aufspaltung von 1,3-Dioxanringen ist an sich bekannt. Sie kann z. B. durch Kochen der Ringverbindung mit Phloroglucin und einer verdünnten Säure vorgenommen werden, wobei eine Abspaltung von Formaldehyd erfolgt. Doch ist dieses Verfahren wegen des hohen Preises von Phloroglucin nur für analytische Zwecke anwendbar. Es -,rllrde gefunden, daß es sehr vorteilhaft ist, die Abspaltung von Formaldehyd aus dem 1,3-Dioxanring in der weise vorzunehmen, daß man 5-(a,y-Dioxy-fl-oxymethylpropyl)-5-methyl-1,3 - dioxan mit einem 1,3-Diol, wie 1,3-Butandiol, 2-1lethylbtltandiol-(1,3) oder anderer niedrigmolekularer 1,3-Diole, einer verdünnten Säure, wie 2 n-Schwefelsäure, kocht, wobei das aus dem frei gewordenen Formaldehyd und dem Glykol gebildete Formal als azeotropes Gemisch mit Wasser übergeht und als obere Schicht abgetrennt werden kann. Auf diese Weise gelingt es, das Formaldehyd praktisch quantitativ aus der Ringverbindung frei zu machen. Das aus Formaldehyd und 1,3-Butandiol gebildete Formal bildet mit Wasser ein bei 89°C siedendes azeotropes Gemisch. Das als Nebenprodukt gewonnene Formal läßt sich in einfacher Weise nach bekannten Verfahren in das Glykol und Formaldehyd zurückverwandeln.The splitting of 1,3-dioxane rings is known per se. she can z. B. by boiling the ring compound with phloroglucinol and a dilute acid be carried out, with an elimination of formaldehyde takes place. Yet this is The method can only be used for analytical purposes because of the high price of phloroglucine. It -, rllrde found that it is very beneficial to the elimination of formaldehyde to undertake from the 1,3-dioxane ring in such a way that 5- (a, y-dioxy-fl-oxymethylpropyl) -5-methyl-1,3 - Dioxane with a 1,3-diol, such as 1,3-butanediol, 2-1lethylbtanediol- (1,3) or others low molecular weight 1,3-diols, a dilute acid such as 2N-sulfuric acid, boils, where the formal formed from the formaldehyde released and the glycol as azeotropic mixture passes over with water and can be separated as an upper layer. In this way it is possible to remove the formaldehyde practically quantitatively from the ring compound to make free. The formal formed from formaldehyde and 1,3-butanediol also forms Water is an azeotropic mixture boiling at 89 ° C. That obtained as a by-product Formally, the glycol and formaldehyde can be converted into the glycol and formaldehyde in a simple manner by known processes transform back.
Beispiel Eine 'Mischung von 1440g 5-Acetyl-5-lnethyl-1,3-Dioxan (10
Mol), 2000 g 30°oiges Formaldehyd (20 11o1) und 151 Wasser wird auf 14°C abgekühlt
und unter Rühren durch Zutropfen von 2 n-Natronlalige ein prl-Wert von 10,5 eingestellt.
Die p "-Messung erfolgt durch ein in die Reaktio-islösung tauchendes Glas-Kalomel-Elektrodenpaar.
Nachdem der p11-Wert von 10,5 durch Nachgeben von 2 n-Natronlauge und eine Temperatur
von 1-1°C 38 Stunden lang aufrechterhalten worden sind, bringt man die Reaktion
durch Einstellen eines pil-@@'ertes von 6,5 mit 2 n-Schwefelsäure zum Stillstand.
Die Reaktionslösung wird im Vakuum eingedampft, wobei ein Rückstand von 2243g an
rohem 5-(a-Oxymetliyl-l3-oxypropio)iyl)-5-metliyl-1,3-dioxan erhalten wird. Nach
dem Vermischen mit 21 Essigester wird warm filtriert. Beim Abkühlen kristallisi^ren
aus dem Filtrat 1435 g (70,2°/o der Theorie) an reinem 5-(a-Oxymethyl-l3-oxypropionyl)-5-m2thyl-1,3-dioxan
(Fp. 107 bis 108°C, nach dreimaligem Umkristallisieren aus Isopropanol). Aus der
Mutterlauge kristallisieren noch 208 g (10,1 °i o der Theorie) an 5-(a,ß-Dioxy-ß-oxymethyl)-5-methyl-1,3-dioxan,
welches schon während der Kondensation durch Reduktion des 5-(a-Oxymethyl-f3-oxypropionyl)-5-methyl-1,3-dioxan
entstanden ist.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE1049841B true DE1049841B (en) | 1959-02-05 |
Family
ID=590395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT1049841D Pending DE1049841B (en) | Process for the preparation of 1,1,3,3-tetramethylolbutanol- (2) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1049841B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0065774A1 (en) * | 1981-05-22 | 1982-12-01 | Montedison S.p.A. | Method for the recovery of pentaerythritol from the residual mixtures of the synthesis from acetaldehyde and formaldehyde |
-
0
- DE DENDAT1049841D patent/DE1049841B/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0065774A1 (en) * | 1981-05-22 | 1982-12-01 | Montedison S.p.A. | Method for the recovery of pentaerythritol from the residual mixtures of the synthesis from acetaldehyde and formaldehyde |
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