CAS: 4130-42-1; 2,6-Di-Tert-Butyl-4-Ethylphenol

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CAS号4309-85-7 5,7-ditert-buty... | CAS号14681-20-0 2,6-Di-tert-but... | CAS号64-17-5 乙醇 | CAS号128-39-2 2,6-二叔丁基苯酚 | CAS号123-07-9 4-乙基苯酚 | CAS号115-11-7 2-甲基丙烯 | CAS号123-63-7 三聚乙醛 | CAS号123-73-9 2-丁烯醛 | CAS号75-07-0 乙醛 | CAS号75-03-6 碘乙烷 | CAS号123-07-9 4-乙基苯酚 | CAS号96-70-8 2-叔丁基-4-乙基苯酚 | CAS号115-11-7 2-甲基丙烯 | CAS号14035-33-7 3',5'-二叔丁基-4'-羟基苯乙酮 | CAS号3673-68-5 2,6-di-tert-but... | CAS号6738-27-8 4-ethylidene-2,...

3,5-二叔丁基-4-羟基苯乙酮置于palladium 10% On Activated Carbon,氢气体系中,用 乙醇 作为反应溶剂,化学反应 2.0H,以80%的收率获得产物2,6-二叔丁基-4-乙基苯酚
参考文献:α-膦酰氧基烯醇化物与对醌甲基化物的非对映选择性 1,6-加成
标题:α-膦酰氧基烯醇化物与对醌甲基化物的非对映选择性 1,6-加成
摘要:探索了在有机碱 1,8-二氮杂双环 (5.4.0)Undec-7-Ene (Dbu) 存在下,将α-酮酰胺加入到由亚磷酸二烷基酯引发的对醌甲基化物中.在碱存在下,二烷基亚磷酸酯与 α-酮酰胺的偶联遵循 [1,2]-Phospha-Brook 重排,反应生成相应的 α-膦酰氧基烯醇化物,随后被对醌甲基化物 (P-Qms) 捕获.两步一锅法 1,6-缀合物添加提供了对一系列含有靛红的磷酸盐的 1,6-加合物的有效访问,这些加合物具有两个邻位叔碳,产率高达 90% 和 >20:1 Dr.
DOI:10.1021/acs.Joc.2C00030

专利信息

专利号:US-8129521-B2
优先权日:2005-12-14
标 题 :One pot synthesis of tetrazole derivatives of rapamycin
发明人：DHAON MADHUP K; HSIAO CHI-NUNG; PATEL SUBHASH R; BONK PETER J; CHEMBURKAR SANJAY R; CHEN YONG Y
权利人:DHAON MADHUP K; HSIAO CHI-NUNG; PATEL SUBHASH R; BONK PETER J; CHEMBURKAR SANJAY R; CHEN YONG Y; ABBOTT LAB
摘要:A single-step, one-pot process to obtain zotarolimus and other rapamycin derivatives on large scale is presented, which improves currently available synthesis schemes. In one embodiment, dried rapamycin is dissolved in isopropylacetate (IPAc). The solution is cooled, and 2,6-Lutidine is added, followed slowly adding triflic anhydride at −30° C. Salts are then removed by filtration. Tetrazole, followed by a tert-base diisopropylethylamine (DIEA) is added to the triflate solution. After incubation at room temperature, the product is concentrated and purified by a silica gel column using THF/heptane as eluant. The fractions containing the product are collected, concentrated, and purified again using an acetone/heptane column. The product containing fractions are concentrated. The product is dissolved in t-BME and precipitated with heptane. The solids are dissolved in acetone, treated with butylated-hydroxy toluene (BHT), and the solution concentrated. The process is repeated twice with acetone to remove solvents. At least one stabilizing agent is added, such as BHT at 0.5% before drying.

专利号:US-2009318592-A1
优先权日:2005-10-11
标 题 :Process for the Synthesis of Amine Ethers
发明人：FREY MARKUS; BROENNIMANN VALERIE
权利人:CIBA GEIGY CORP
摘要:The present invention relates to novel processes for the preparation of a sterically hindered amine ether by reacting a corresponding sterically hindered amine oxide with a ketone or an aldehyde with at least one reactive H in the presence of a peroxydisulphate. Products obtained by this process may be hydrogenated. The compounds made by these processes are particularly effective in the stabilization of polymer compositions against harmful effects of light, oxygen and/or heat and as flame-retardants for polymers.

专利号:US-7402675-B2
优先权日:2000-05-26
标题 :Process for the synthesis of amine ethers from secondary amino oxides
发明人：HAFNER ANDREAS; KIRNER HANS JUERG; SCHWARZENBACH FRANZ; VAN DER SCHAAF PAUL ADRIAAN; NESVADBA PETER
权利人:CIBA SC HOLDING AG
摘要:An amine ether of formula A n nwherein a is 1 or 2; and when a is 1, E is E′; when a is 2, E is L;n E′ is C 1 -C 36 alkyl; C 3 -C 18 alkenyl; C 2 -C 18 alkinyl; C 5 -C 18 cycloalkyl; C 5 -C 18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or tricyclic hydrocarbon of 7 to 12 carbon atoms; C 2 -C 7 alkyl or C 3 -C 7 alkenyl substituted by halogen; C 7 -C 15 aralkyl or C 7 -C 15 aralkyl substituted by C 1 -C 4 alkyl or phenyl; or E′ is a radical of formula (VII) as explained in claim 1; T′ is tertiary C 4 -C 18 alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR 21 or C(O)—R 22 ; or T′ is C 5 -C 12 cycloalkyl; C 5 -C 12 cycloalkyl which is interrupted by at least one O or —NR 18 —; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR 18 —; or T′ is —C(G 1 )(G 2 )-T″; or C 1 -C 18 alkyl or C 5 -C 12 cycloalkyl substituted by n n n n n n n n n n n n T″ is hydrogen, halogen, NO 2 , cyano, or is a monovalent organic radical comprising 1-50 carbon atoms; n or T″ and T′ together form a divalent organic linking group completing, together with the hindered amine nitrogen atom and the quaternary carbon atom substituted by G 1 and G 2 , an optionally substituted five- or six-membered ring structure; and all other residues are as defined in claim 1, n are obtained in good yield from the corresponding N-oxyl hindered amine precursor by reaction with a hydrocarbon E 1 -H or H-L-H in the presence of an organic hydroperoxide and a catalytic amount of copper or a copper compound. n n n n n The products of present process find utility as polymerization regulators and/or light stabilizers for organic material.

专利号:WO-2014060252-A1
优先权日:2012-10-16
标题 :Process for the synthesis of disentangled uhmw-pe using a cr or ti catalyst
发明人：ROMANO DARIO; RONCA SARA; BOS JOHAN; RASTOGI SANJAY
权利人:TEIJIN ARAMID BV; UNIV LOUGHBOROUGH
摘要:The invention pertains to a process for the manufacture of disentangled ultra-high molecular weight polyethylene in the presence of a co-catalyst comprising trialkylaluminum and a catalyst which is a substituted monocyclopentadienyl, monoindenyl, monofluorenyl or heterocyclopentadienyl complex of chromium or titanium in which at least one of the substituents on the cyclopentadienyl ring carries a neutral donor function which is bonded rigidly, not exclusively via sp 3 -hybridized carbon or silicon atoms, characterized in that the process comprises the following steps in the given order: i) a solvent and a trialkylaluminum-scavenger and optionally co-catalyst are added to a reaction vessel, ii) ethylene is added to the reaction vessel, iii) a mixture of the catalyst and co-catalyst is added to the reaction vessel. UHMW-PE obtainable by this process is also claimed, as are fibers, films tapes and moldings comprising this material, and their use in penetration-resistant articles, gloves, biaxial films, cables, slings, ropes, nets, pipes and prostheses.

专利号:EP-1633799-B1
优先权日:2003-06-03
标 题 :Production of polyether alcohols by using dmc catalysis
发明人：OSTROWSKI THOMAS; RUPPEL RAIMUND; BAUM EVA; HARRE KATHRIN
权利人:BASF SE
摘要:The present invention relates to polyetherols are prepared by a process comprising the reaction of at least one alkylene oxide with at least one initiator compound in the presence of at least one double metal cyanide compound to give a polyetherol and the treatment of the resulting polyetherol with steam or with an inert gas and steam, and the polyetherols obtainable by such a process as well as the use thereof for the synthesis of polyurethanes.

专利号:US-5629394-A
优先权日:1992-12-17
标 题 :Direct synthesis by living cationic polymerization of nitrogen-containing polymers
发明人：CHERADAME HERVE M; CHEN FRANK J; STANAT JON E R; NGUYEN HUNG A; TABAR BEHROOZ R
权利人:EXXON CHEMICAL PATENTS INC
摘要:A method is provided for the direct synthesis by living cationic polymerization of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino, cyanato, thiocyanato or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.