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CAS号201230-82-2 carbon monoxide | CAS号84098-44-2 trimethyl-(1-pr... | CAS号54509-73-8 ethene | CAS号67-63-0 异丙醇 | CAS号3068-88-0 B-丁内酯 | CAS号74-88-4 碘甲烷 | CAS号79-03-8 丙酰氯 | CAS号123-62-6 丙酸酐 | CAS号187737-37-7 propene | CAS号67-64-1 丙酮 | CAS号75-65-0 叔丁醇 | CAS号187737-37-7 propene | CAS号75-07-0 乙醛 | CAS号67-63-0 异丙醇 | CAS号140703-35-1 trimethyl(1-pro...

📜(S)-(-)-乳酸异丙酯置于氢气体系中,220.0 °C,5.0 Mpa 条件下,反应 12.0H,以71%的收率获得产物丙酸异丙酯
参考文献:铁基双金属负载催化剂将乳酸烷基酯选择性加氢脱氧为丙酸烷基酯
标题:铁基双金属负载催化剂将乳酸烷基酯选择性加氢脱氧为丙酸烷基酯
摘要:用各种贱金属负载的催化剂将乳酸甲酯(ml)加氢脱氧(hdo)变成丙酸甲酯(mp).在220oc和50 Bar H 2的条件下,在甲醇中使用双金属fe-ni / Zro 2可获得77%的高收率.使用的fe-Ni /的zro在ni的协同效果提高mp的收率显著2代替的fe /的zro 2单独.此外,Zro 2载体有助于提高产率,因为金属掺杂后zro 2从四方晶向单斜晶发生了相变,从而导致fe和ni在zro 2上的精细分散,从而提高了材料的催化活性. .有趣的是,观测到fe-Ni / Zro2还有效催化甲醇重整以原位产生h 2,然后进行ml的hdo,在220oc下用50 Bar N 2代替h 2产生60%mp .fe-ni / Zro 2还可将其他短链烷基乳酸酯的hdo催化为相应的丙酸烷基酯,产率约为70%.fe-Ni / Zro 2的活性在连续五个反应运行中均未发生损失,这表明催化剂体系具有很高的耐久性.
DOI:10.1002/cssc.201702411

专利信息

专利号:US-8153839-B2
优先权日:2005-09-14
标题:Method for synthesis of keto acids or amino acids by hydration of acetylene compound
发明人：OGO SEIJI; FUKUZUMI SHUN-ICHI
权利人:OGO SEIJI; FUKUZUMI SHUN-ICHI; JAPAN SCIENCE & TECH AGENCY
摘要:An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1), n nwhere M 1 represents an element in Group VIII, IX, or X of the periodic table, and X 1 , X 2 , or X 3 ligand represents halogen, H 2 O, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k×m=L×n.

专利号:US-9469614-B2
优先权日:2011-10-27
标 题:Synthesis of triazolopyrimidine compounds
发明人：ZUPANCIC BORUT; MARAS NENAD; STERK DAMJAN
权利人:LEK PHARMACEUTICALS
摘要:The present invention relates to the field of organic synthesis and describes the synthesis of specific triazolopyrimidine compounds and intermediates thereof as well as related derivatives.

专利号:US-10995093-B2
优先权日:2016-04-07
标 题 :Synthesis of 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA) and 2′-fluoro-6′methylene-carbocyclic guanosine (FMCG)
发明人：CHU CHUNG K; MULAMOOTTTIL VARUGHESE ALEXANDER; MISHRA RAM C; SINGH UMA SHARAN
权利人:UNIV GEORGIA
摘要:The invention provides a new convergent approach for the synthesis of 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA) and 2′-fluoro-6′-methylene-carbocyclic guanosine (FMCG) from a readily available starting material in eight steps. An efficient and practical methodology for stereospecific preparation of a versatile carbocyclic key intermediate, (1S,3R, 4R)-3-tert-butoxy-4-(tert-butoxymethyl)-2-fluoro-5-methylenecyclopentanol (compound 8 of scheme 1A or a) in only six (6) steps is also provided. Prodrugs of these compounds are also prepared.

专利号:US-3887490-A
优先权日:1970-08-27
标 题 :Process for regenerating noble metal catalyst for the synthesis of hydrogen peroxide according to the anthraquinone process
发明人：SCHREYER GERD; THEISSEN FERDINAND; WEIBERG OTTO; WEIGERT WOLFGANG
权利人:DEGUSSA
摘要:In situ regeneration of noble metal catalysts for the synthesis of hydrogen peroxide by the anthraquinone process is provided by employing as the working solution coming from the extraction or desorption step and being introduced into the hydrogenation step a solution which contains at least 250 mg/liter of hydrogen peroxide, to thereby completely regenerate the noble metal catalyst by full capacity of the hydrogenation step.

专利号:US-5702928-A
优先权日:1994-07-18
标题 :Process for producing optically active triazole compounds and method of racemizing optically active triazole compounds
发明人：KAWADA NAOKI; YAMAZAKI NORITSUGU; IMOTO TAKAFUMI; IKURA KIYOSHI
权利人:DAICEL CHEM
摘要:PCT No. PCT/JP95/01416 Sec. 371 Date May 24, 1996 Sec. 102(e) Date May 24, 1996 PCT Filed Jul. 17, 1995 PCT Pub. No. WO96/02664 PCT Pub. Date Feb. 1, 1996A process for the asymmetric synthesis of a compound represented by general formula (II-R) easily at a low cost by using a lipase, and a process for producing a compound to be utilized in the above synthesis. (II-R)

专利号:US-2023303611-A1
优先权日:2022-01-21
标题:Synthesis of an antiviral azasugar triphosphate
发明人：KOTIAN PRAVIN L; Dang zhao; WU MINWAN
权利人:BIOCRYST PHARM INC
摘要:Provided are methods of making the active 5′-triphosphate form of galidesivir (compound 1) and the active 5′-triphosphate form of azasugar nucleoside analogues (compound 2):a potent anti-viral compound useful for broad spectrum treatment, suppression, and prevention of viral infections. The syntheses of compound 1 and compound 2 can be achieved via selective formation of protected intermediate 1b and protected intermediate 2b, respectively: