CAS: 3178-22-1; Tert-Butylcyclohexane

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CAS号41780-53-4 N'-(4-(叔丁基)环己基亚... | CAS号109275-16-3 2-((4-(tert-but... | CAS号2228-98-0 4-(叔丁基)-1-环己烯 | CAS号24424-99-5 二碳酸二叔丁酯 | CAS号110-83-8 环己烯 | CAS号98-54-4 对叔丁基苯酚 | CAS号543-27-1 氯甲酸异丁酯 | CAS号98-52-2 4-叔丁基环己醇 (顺反混合物) | CAS号3178-22-1 叔丁基环已烷 | CAS号462-06-6 氟苯 | CAS号943-29-3 反-4-叔丁基环己甲酸 | CAS号943-28-2 顺-4-叔丁基环己甲酸 | CAS号936-99-2 3-(叔丁基)环己酮 | CAS号98-53-3 4-叔丁基环己酮 | CAS号21862-63-5 反-4-叔丁基环己醇 | CAS号10488-10-5 cis-3-tert-buty... | CAS号20344-52-9 顺式-对叔丁基环己醇

专利信息

专利号:US-10308588-B2
优先权日:2014-12-15
标 题 :Synthesis of amides and amines from aldehydes or ketones by heterogeneous metal catalysis
发明人：CÓRDOVA ARMANDO; PALO-NIETO CARLOS; AFEWERKI SAMSON
权利人:ORGANOFUEL SWEDEN AB
摘要:A mild and efficient synthesis of primary amines and amides from aldehydes or ketones using a heterogeneous metal catalyst and amine donor is disclosed. The initial heterogeneous metal-catalyzed reaction between the carbonyl and the amine donor components is followed by the addition of a suitable acylating agent component in one-pot, thus providing a catalytic one-pot three-component synthesis of amides. Integration of enzyme catalysis allows for eco-friendly one-pot co-catalytic synthesis of amides from aldehyde and ketone substrates, respectively. The process can be applied to asymmetric synthesis or to the co-catalytic one-pot three-component synthesis of capsaicin and its analogues from vanillin or vanillyl alcohol. A co-catalytic reductive amination/dynamic kinetic resolution (dkr) relay sequence for the asymmetric synthesis of optically active amides from ketones is disclosed. Implementation of a catalytic reductive amination/kinetic resolution (kr) relay sequence produces the corresponding optically active amide product and optical active primary amine product with the opposite stereochemistry from the starting ketones.

专利号:WO-2012153162-A1
优先权日:2011-05-12
标题 :Novel method for preparation of atovaquone
发明人：ROY BHAIRAB NATH; SINGH GIRIJ PAL; LATHI PIYUSH SURESH; AGRAWAL MANOJ KUNJABIHARI; MITRA RANGAN; TRIVEDI ANURAG
权利人:LUPIN LTD; ROY BHAIRAB NATH; SINGH GIRIJ PAL; LATHI PIYUSH SURESH; AGRAWAL MANOJ KUNJABIHARI; MITRA RANGAN; TRIVEDI ANURAG
摘要:Provided is a process of preparation of 2-[ trans ,-4-(4'-chlorophenyl)cyclohexyl]-3-hydroxy- 1,4-naphthoquinone, i.e. Atovaquone [I] which is cost effective, green, and eco-friendly process, without separation of any diastereomers or geometric isomers of intermediates obtained during the reactions. Also provided is separation of ' cis ' and ' trans ' isomer of intermediates VI, VII and VIII through selective crystallization in an appropriate solvent. A method for converting 2-[ cis ,-4-(4'-chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthoquinone to 2-[ trans -4-(4'-chlorophenyl)cyclohexyl]-3-hydroxy-l,4-naphthoquinone in presence of Lewis/ Bronsted acid is also provided. A process for preparation of compound 2-(4-(4- chlorophenyl)- 1 -hydroxy cyclohexyl)-3,4-dihydronaphthalen- 1 (2H)-one [IV] comprising condensation of (1,2-dihydronaphthalen-4-yloxy)trimethylsilane [II] with 4-(4- chlorophenyl)cyclohexanone [III] in presence of Lewis acid in organic solvent. The invention also encompasses a highly efficient and atomeconomic process for synthesis of compound [III] i.e. 4-(4-chlorophenyl)cyclohexanone as well as a process for synthesis of 2-[ cis -4-(4'- chlorophenyl)cyclohexyl]-3-hydroxy-l,4-naphthoquinone. Further provided is a process for isomerization of cis- Atovaquone i.e. 2-[ cis -4-(4'-chlorophenyl)cyclohexyl]-3-hydroxy-l,4- naphthoquinone to tnms-Atovaquone i.e. 2-[ trans -4-(4'-chlorophenyl)cyclohexyl]-3- hydroxy- 1,4-naphthoquinone in presence of Lewis acid.

专利号:US-4033949-A
优先权日:1976-04-14
标 题:Analogs of thromboxane B2 and processes for their synthesis
发明人：KELLY ROBERT C; NELSON NORMAN A
权利人:UPJOHN CO
摘要:The present specification provides novel intermediates and novel processes for the synthesis of various side chain and skeletal analogs of Thromboxane B 2 (11β-homo-11a-oxa-PGF 2 .sub.α). These analogs are particularly and especially useful as reproductive cycle control agents.

专利号:US-2023348707-A1
优先权日:2022-04-28
标题:Random bipolymers of controlled molecular mass based on hydroxyacrylates and their use as destabilizers of water/oil emulsions in crude oils
发明人：SANDOVAL CÉSAR ANDRÉS FLORES; MORENO FLAVIO SALVADOR VÃ?ZQUEZ; OLIVARES GERARDO ZAVALA; RAMÃ?REZ FERNANDO Ã?LVAREZ; SANTIAGO JESSICA VALERIA FUENTES; ZAMORA GUERRERO EDGAR BENEDICTO; MAYA ENRIQUE CEVADA
权利人:MEXICANO INST PETROL
摘要:The present disclosure provide bipolymers, based on alkyl acrylate and hydroxyalkyl acrylate, with high randomness and controlled molecular mass, that are useful as demulsifying and dehydrating agents for crude oil. The synthesis of these bipolymers is carried out in a single stage by emulsion polymerization, a process that, in addition to having moderate reaction conditions, allows the control of the homogeneity of the chain size, the molecular mass, and the demulsifying efficiency. These random bipolymers are soluble in organic phase; therefore, these cannot be carried away by the removed water, and are eliminated in the atmospheric distillation stage. An additional advantage is the superior demulsifying and clarifying efficiency of these random bipolymers compared with the polyether formulations widely used at industrial level. In addition, these random bipolymers provide single molecule that performs three functions: breaker, coalescer and clarifier, in contrast to formulations based on at least three different polyethers.

专利号:US-5218097-A
优先权日:1988-12-07
标题:Process for the preparation of protected mono-sugar and oligo-sugar halides
发明人：ERNST BEAT
权利人:CIBA GEIGY CORP
摘要:The reaction of protected monosaccharides or oligosaccharides or protected monosaccharide and oligosaccharide derivatives containing an anomeric hydroxyl group with secondary α-haloenamines affords high yields of protected glycosyl halides, which are valuable intermediates for the introduction of sugar groups in the synthesis of oligosaccharides, glycolipids or glycopeptides.

专利号:US-6664282-B2
优先权日:1999-09-17
标 题:Synthesis of [3,5,7]-1H-imidazo [1,5-a]imidazol-2 (3H)- one compounds
发明人：ELABDELLAOUI HASSAN M; OSTRESH JOHN M; HOUGHTEN RICHARD A
权利人:TORREY PINES INST
摘要:Individual substituted [3,5,7]-1H-imidazo[1,5-a]imidazol-2(3H)-one compounds and their pharmaceutically-acceptable salts are disclosed, as are libraries of such compounds. Methods of preparing and using the libraries of compounds as well as individual compounds of the libraries are also disclosed.