BR9904064A - Processo para a clivagem redutora de acetais lineares e cìclicos, especialmente formais - Google Patents
Processo para a clivagem redutora de acetais lineares e cìclicos, especialmente formaisInfo
- Publication number
- BR9904064A BR9904064A BR9904064-6A BR9904064A BR9904064A BR 9904064 A BR9904064 A BR 9904064A BR 9904064 A BR9904064 A BR 9904064A BR 9904064 A BR9904064 A BR 9904064A
- Authority
- BR
- Brazil
- Prior art keywords
- linear
- reducing
- formal
- cyclic acetals
- less
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000003776 cleavage reaction Methods 0.000 title abstract 2
- -1 cyclic acetals Chemical class 0.000 title abstract 2
- 230000007017 scission Effects 0.000 title abstract 2
- 150000001241 acetals Chemical class 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000009904 heterogeneous catalytic hydrogenation reaction Methods 0.000 abstract 1
- 238000005984 hydrogenation reaction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000000607 poisoning effect Effects 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/88—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound
- C07C29/90—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound using hydrogen only
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
Patente de Invenção: <B>"PROCESSO PARA A CLIVAGEM REDUTORA DE ACETAIS LINEARES E CìCLICOS, ESPECIALMENTE FORMAIS"<D>. A clivagem redutora de acetais lineares e cíclios, especialmente formais, em um meio aquoso contendo um formato ocorre por hidrogenação na presença de um catalisador de hidrogenação heterogêneo em um valor de pH de menos que 7 em uma temperatura de acima de 200°C. O efeito de envenenamento de catalisador do formato é superado em acima de 200 a 300°C, especialmente a partir de acima de 200 a 280°C, de modo que, em um procedimento em suspensão, a razão em peso de metal tendo atividade hidrogenante a acetal pode ser muito menor do que na técnica anterior, por exemplo, menos que 0,1.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19840276A DE19840276C2 (de) | 1998-09-04 | 1998-09-04 | Verfahren zur reduzierenden Spaltung von linearen und cyclischen Acetalen, insbesondere Formalen |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9904064A true BR9904064A (pt) | 2000-09-19 |
Family
ID=7879744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9904064-6A BR9904064A (pt) | 1998-09-04 | 1999-09-02 | Processo para a clivagem redutora de acetais lineares e cìclicos, especialmente formais |
Country Status (7)
Country | Link |
---|---|
US (1) | US6265623B1 (pt) |
EP (1) | EP0983984A3 (pt) |
JP (1) | JP2000086551A (pt) |
BR (1) | BR9904064A (pt) |
CA (1) | CA2281364A1 (pt) |
DE (1) | DE19840276C2 (pt) |
TW (1) | TW460443B (pt) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1040870A3 (en) | 1999-03-29 | 2002-02-06 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Noble metal based catalyst functioning at ordinary temperature and method for destroying noxious gaseous compounds using the same |
EP1162178A3 (en) * | 2000-06-06 | 2003-10-15 | BP Köln GmbH | Process for removing cyclic acetals from wastewater streams |
DE10223054A1 (de) * | 2002-05-24 | 2003-12-04 | Basf Ag | Verfahren zur Herstellung von Polyetherolen |
US8227640B2 (en) * | 2007-03-23 | 2012-07-24 | Institute Of Bioengineering And Nanotechnology | Palladium catalysts |
JP5702284B2 (ja) * | 2008-08-25 | 2015-04-15 | ダウ グローバル テクノロジーズ エルエルシー | ポリオールエーテルおよびその製法 |
US20110207969A1 (en) * | 2010-02-23 | 2011-08-25 | Olken Michael M | Process for making polyol ethers |
DE102010033844B4 (de) | 2010-08-11 | 2013-01-03 | Oxea Gmbh | Verfahren zur Gewinnung von Di-Trimethylolpropan und mit Trimethylolpropan angereicherten Produktströmen aus den Nebenströmen der Trimethylolpropanherstellung |
US8829206B2 (en) | 2011-06-24 | 2014-09-09 | Eastman Chemical Company | Production of cyclic acetals or ketals using solid acid catalysts |
US8969598B2 (en) | 2011-06-24 | 2015-03-03 | Eastman Chemical Company | Production of cyclic acetals or ketals using liquid-phase acid catalysts |
US8829207B2 (en) | 2011-06-24 | 2014-09-09 | Eastman Chemical Company | Production of cyclic acetals by reactive distillation |
US9056313B2 (en) | 2011-06-24 | 2015-06-16 | Eastman Chemical Company | Catalysts for the production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals |
US9000229B2 (en) | 2011-06-24 | 2015-04-07 | Eastman Chemical Company | Production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals |
US8785697B2 (en) | 2011-06-24 | 2014-07-22 | Eastman Chemical Company | Nickel modified catalyst for the production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals |
US9388105B2 (en) | 2011-06-24 | 2016-07-12 | Eastman Chemical Company | Production of hydroxy ether hydrocarbons by liquid phase hydrogenolysis of cyclic acetals or cyclic ketals |
DE102011118953B4 (de) | 2011-11-19 | 2014-06-05 | Oxea Gmbh | Destillatives Verfahren zur Gewinnung von Di-Trimethylolpropan |
DE102011118956A1 (de) | 2011-11-19 | 2013-05-23 | Oxea Gmbh | Verfahren zur Gewinnung von Di-Trimethylolpropan und mit Trimethylolpropan angereicherten Produktströmen aus den Nebenströmen der Trimethylolpropanherstellung |
DE102011118993A1 (de) * | 2011-11-19 | 2013-05-23 | Oxea Gmbh | Verfahren zur Gewinnung von Di-Trimethylpropan und mit Trimethylpropan angereicherten Produktströmen aus den Nebenströmen der Trimethylolpropanherstellung |
DE102011122356A1 (de) | 2011-12-23 | 2013-06-27 | Oxea Gmbh | Verfahren zur Gewinnung von mit Trimethylolpropan angereicherten Produktströmen aus den Nebenströmen der Trimethylolpropanherstellung |
US8921618B2 (en) | 2012-09-17 | 2014-12-30 | Oxea Bishop Llc | Recovery of trimethylolpropane from purification residue |
US8759593B2 (en) | 2012-09-17 | 2014-06-24 | Oxea Bishop Llc | Recovery of alcohols from purification residue |
US11198074B2 (en) | 2015-05-27 | 2021-12-14 | Newsouth Innovations Pty Limited | Method for assisting thermally-induced changes |
WO2023009952A1 (en) | 2021-07-30 | 2023-02-02 | Noel Armand J | Solvents, methods, and systems for isolating cannabinoids from plants extracts or from synthetic pathways |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7116417A (pt) * | 1971-11-30 | 1973-06-04 | ||
DE4220939A1 (de) * | 1992-06-26 | 1994-01-05 | Huels Chemische Werke Ag | Verfahren zur Herstellung von 2-Aryl-ethanolen |
DE4414274A1 (de) * | 1994-04-23 | 1995-10-26 | Chemie Linz Deutschland | Hydrogenolytische Reduktion eines Aldehyds oder dessen Halbacetals oder dessen Vollacetals zu einem Alkohol |
SE9502355L (sv) * | 1995-06-29 | 1996-12-30 | Perstorp Ab | Spaltning av cykloalkyletrar |
-
1998
- 1998-09-04 DE DE19840276A patent/DE19840276C2/de not_active Expired - Fee Related
-
1999
- 1999-08-25 EP EP99116581A patent/EP0983984A3/de not_active Ceased
- 1999-08-26 US US09/384,058 patent/US6265623B1/en not_active Expired - Fee Related
- 1999-08-31 TW TW088114984A patent/TW460443B/zh not_active IP Right Cessation
- 1999-09-01 JP JP11247604A patent/JP2000086551A/ja active Pending
- 1999-09-02 BR BR9904064-6A patent/BR9904064A/pt not_active IP Right Cessation
- 1999-09-03 CA CA002281364A patent/CA2281364A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP0983984A3 (de) | 2000-05-17 |
EP0983984A2 (de) | 2000-03-08 |
US6265623B1 (en) | 2001-07-24 |
TW460443B (en) | 2001-10-21 |
CA2281364A1 (en) | 2000-03-04 |
DE19840276C2 (de) | 2002-10-31 |
JP2000086551A (ja) | 2000-03-28 |
DE19840276A1 (de) | 2000-03-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR9904064A (pt) | Processo para a clivagem redutora de acetais lineares e cìclicos, especialmente formais | |
TR200103844T2 (tr) | 3-Hidroksipropanal'ın 1,3-Propandiyol'e katalitik hidrojenasyonu | |
BR0101856A (pt) | Processo para craqueamento catalìtico de uma alimentação de hidrocarboneto | |
BR9913475A (pt) | Processo para a produção de 1,3-propanodiol | |
BR8800627A (pt) | Catalisador usado para producao por oxidacao catalitica em fase gasosa,de uma olefina ou alcool terciario c3-5,processo para preparar um catalisador,catalisador para oxidacao de uma olefina c3-5 e catalisador para oxidacao de isobutileno ou butenol terciario | |
BR0106434A (pt) | Processo e dispositivo para a redução de óxido de dinitrogênio | |
ATE302060T1 (de) | Katalysator und verfahren zur herstellung von 1,3-propandiol | |
PT1112097E (pt) | Processo novo para preparar substancias de modificacao de superficies | |
FR2797639B1 (fr) | Procede de production d'essences a faible teneur en soufre | |
BR0016776A (pt) | Composições de suporte de catalisador de zeólito / alumina e método de produção das mesmas | |
BR0100751A (pt) | Processo aperfeiçoado para a hidroformilação de olefinas por redução da concentração de ácido fórmico | |
ES2177986T3 (es) | Procedimiento de fabricacion de 2,3-dihalopropanoles. | |
BR9911431A (pt) | Processo para produção de uma solução aquosa de ácido monoéster peroxicarboxìlico | |
BR0214603A (pt) | Catalisador suportado, coluna para realizar uma condensação aldólica, e, processo para preparar pseudoionona e para realizar uma condensação aldólica | |
BR9814593A (pt) | " catalisador à base de ferrierita/ferro para a redução catalìtica do teor de gás em protóxido de nitrogênio, seu processo de obtenção e sua aplicação " | |
BR0101169B1 (pt) | processo para a hidrogenação catalìtica de compostos aromáticos nitrados, e, uso de um catalisador compreendendo pelo menos nìquel e possivelmente alumìnio | |
BRPI0506690A (pt) | processo para a preparação de 1,3-butileno glicol | |
BR9405558A (pt) | Método de melhorar a atividade do catalisador, catalisadores aperfeiçoados e seu uso | |
BR0317462A (pt) | Processo para a remoção de so2 em gases de saìda | |
BR9916627A (pt) | Processo para produzir transglutaminase tendoatividade enzimática, e, protéina | |
PT1385850E (pt) | Novo processo para a preparacao de oxabispidinas | |
BR0013977A (pt) | Método para ativar uma liga de armazenamento de hidrogênio, método para ativar um eletrodo de liga de armazenamento de hidrogênio para uma célula eletroquìmica alcalina, liga de armazenamento de hidrogênio, eletrodo de liga de armazenamento de hidrogênio, e , processo para fabricar um eletrodo de liga de absorção de hidrogênio | |
BR0014456A (pt) | Processos para ativação por hidrogênio em alta temperatupa e alta pressão de ferro passivado, e para hidrogenação na presença d um catalizador heterogênio, métodos para uso de nitrilas, e para uso de ferro, e, ferro catalìtico | |
FR2688223B1 (fr) | Nouveau procede d'adoucissement de coupes petrolieres sans adjonction reguliere de solution aqueuse alcaline, utilisant un catalyseur solide basique. | |
BG49826A3 (en) | Method for preparing derivatives of thilosine and 10, 11, 12, 13- tetrahydrothilosine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B25A | Requested transfer of rights approved |
Free format text: DEGUSSA AG (DE) |
|
B25A | Requested transfer of rights approved |
Free format text: PERSTORP SPECIALTY CHEMICALS AB (SE) |
|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 8A E 9A ANUIDADES |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1990 DE 25/02/2009. |