CAS: 110-88-3; 1,3,5-Trioxane

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CAS号50-00-0 甲醛 | CAS号67-56-1 甲醇 | CAS号1670-46-8 2-乙酰环戊酮 | CAS号80653-57-2 N,O-Dimesyl-N-m... | CAS号7664-93-9 硫酸 | CAS号99-94-5 对甲基苯甲酸 | CAS号67-64-1 丙酮 | CAS号93-58-3 苯甲酸甲酯 | CAS号4382-76-7 乙酸甲氧基甲酯 | CAS号7732-18-5 水 | CAS号111297-80-4 5-[[(3-carboxy-... | CAS号111013-41-3 iodomethyl °Ctanoate | CAS号4104-44-3 N,3-二甲基丁-1-胺 | CAS号2315-43-7 N,N,3-trimethyl... | CAS号17945-72-1 N,N,3-trimethyl... | CAS号3587-60-8 苄基氯甲基醚 | CAS号5464-28-8 甘油缩甲醛 | CAS号4740-78-7 甘油缩甲醛 | CAS号5368-70-7 噻吩-2-碳酸酯 | CAS号3587-58-4 氯甲基异丙基醚

聚合甲醛置于iron(III) Chloride,硫酸,水体系中,97.99 °C,1.0 Mpa 条件下,反应 0.5H,反应生成三聚甲醛
参考文献:The Salt Effect On The Yields Of Trioxane In Reaction Solution And In Distillate
标题:The Salt Effect On The Yields Of Trioxane In Reaction Solution And In Distillate
摘要:报道了盐对硫酸催化的三氧杂环合成反应的影响及其机理.
Doi:10.1039/c5Ra02821C

专利信息

专利号:WO-2023102600-A1
优先权日:2021-12-06
标题:Synthesis of amphiphilic block copolymers and polymeric nanofibers produced therefrom
发明人：ZETTERLUND PER B; ISHIZUKA FUMI; KIM HYUN JIN; CHATANI SHUNSUKE; NIINO HIROSHI
权利人:NEWSOUTH INNOVATIONS PTY LTD
摘要:The present disclosure relates to the field of synthesis of block copolymers, and polymeric nanofibers having a core-shell morphology produced therefrom. The present disclosure relates to the field of synthesis of block copolymers where one block is more hydrophobic than the other block and is a different composition. The disclosure also relates to uses of these polymeric nanofibers in various applications, such as reinforcing a polymeric matrix and for coatings applications.

专利号:US-9242925-B2
优先权日:2011-08-29
标题:Versatile and stereospecific synthesis of γ,δ-unsaturated amino acids by Wittig reaction
发明人：JUGE SYLVAIN; BAYARDON JEROME; REMOND EMMANUELLE; ONDEL-EYMIN MARIE-JOELLE
权利人:JUGE SYLVAIN; BAYARDON JEROME; REMOND EMMANUELLE; ONDEL-EYMIN MARIE-JOELLE; CENTRE NAT RECH SCIENT; UNIV BOURGOGNE
摘要:The γ,δ-unsaturated α-amino acids of general formula (I). Also, a versatile process for the stereospecific synthesis of said compounds of formula (I), involving a Wittig reaction. Further, intermediate products of general formulae (II) and (III), as shown below, which are involved in the synthesis of compounds (I). n n n n n n n n n n n n Compounds of general formula (I) may be useful as therapeutic substances, or as reagents or intermediates for fine chemistry.

专利号:US-8791287-B2
优先权日:2010-07-02
标 题:Process for the synthesis of tapentadol and intermediates thereof
发明人：MOTTA GIUSEPPE; VERGANI DOMENICO; BERTOLINI GIORGIO; LANDONI NICOLA
权利人:MOTTA GIUSEPPE; VERGANI DOMENICO; BERTOLINI GIORGIO; LANDONI NICOLA; EUTICALS SPA
摘要:The object of the present invention is a new process for the synthesis of tapentadol, both as free base and in hydrochloride form, which comprises the step of alkylation of the ketone (VII) to yield the compound (VIII), as reported in Diagram 1, with high stereoselectivity due to the presence of the benzyl group as substituent of the amino group. It was surprisingly found that this substitution shifts the keto-enol equilibrium towards the desired enantiomer and amplifies the capacity of the stereocenter present in the compound (VII) to orient the nucleophilic addition of the organometallic compound at the carbonyl towards the desired stereoisomer. This substitution thus allows obtaining a considerable increase of the yields in this step, and consequently allows significantly increasing the overall yield of the entire tapentadol synthesis process. n A further object of the present invention is constituted by the tapentadol free base in solid form, obtainable by means of the process of the invention. n Still another object of the invention is represented by the crystalline forms I and II of the tapentadol free base. n A further object of the present invention is the mixture of the crystalline forms I and II of the tapentadol free base.

专利号:EP-0439404-B1
优先权日:1990-01-25
标题 :Preparation of 2-(2'-thienyl) alkylamines and derivatives thereof and synthesis of 4,5,6,7- thieno [3,2-c] pyridine derivatives therefrom
发明人：KHATRI HIRALAL N; DEHOFF BRADLEY S
权利人:SANOFI SA
摘要:An improved process for the synthesis of 2-(2 min -thienyl)ethylamine from suitably functionalized derivatives of 2-(2 min -thienyl)ethanol employing ammonia gas in the presence of a metal salt or liquid ammonia and alkyl ketone as a solvent. The 2-(2 min -thienyl)ethylamine produced by this process is advantageously converted to the carbamic acid salt, which is suitably reconverted to 2-(2 min -thienyl)ethylamine, a useful intermediate in the synthesis of ticlopidine.

专利号:US-9943544-B2
优先权日:2015-03-18
标 题:Process for bio synthesis of nano arsenic trioxide and its use in treatment of diseases including cancer
发明人：BENDALE YOGESH NARAYAN; BENDALE VINEETA YOGESH
权利人:BENDALE YOGESH NARAYAN; BENDALE VINEETA YOGESH
摘要:The present invention is a process for bio synthesis of nano arsenic trioxide defined by its low toxicity, higher bio availability and nano particle size with the aid of buttermilk, goat urine, dolichos biflorous and other plant materials such as ginger, momordica charantia and musa paradisiaca . The invention is carried out in different steps involving purification of crude form of arsenic trioxide by boiling it with buttermilk, goat urine and extract of dolichos biflorous in subsequent steps, followed by the trituration of the bio purified arsenic trioxide with extracts of ginger and momordica charantia in subsequent steps and heating of the dry product obtained after trituration with musa paradisiaca resulting in the production of novel nano arsenic trioxide. The product is effective in the treatment of various diseases including different types of cancer in animals and humans. The product obtained through the process is less toxic with higher bio availability.

专利号:US-4051153-A
优先权日:1975-01-27
标题 :Intermediates in the synthesis of vitamin E
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A synthesis of vitamin E in racemic or optically active forms from methacryolein or beta-hydroxyisobutyric acid including intermediates in this synthesis.