CAS: 109-94-4; Ethyl Formate

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CAS号64-17-5 乙醇 | CAS号124-38-9 二氧化碳 | CAS号201230-82-2 carbon monoxide | CAS号617-35-6 丙酮酸乙酯 | CAS号122-51-0 原甲酸三乙酯 | CAS号539-88-8 乙酰丙酸乙酯 | CAS号39689-37-7 sodium salt of ... | CAS号104-01-8 4-甲氧基苯乙酸 | CAS号64-18-6 甲酸 | CAS号454-31-9 二氟乙酸乙酯 | CAS号1064678-66-5 3-溴-5-氯吡啶-4-羧醛 | CAS号104556-86-7 4,7-二氢-7-氧代吡唑并[... | CAS号112044-12-9 tris(trimethyls... | CAS号10472-09-0 2-(chloromethyl... | CAS号111651-85-5 1-(3-hexoxyphen... | CAS号1117-72-2 Formamide,N-but... | CAS号1113049-90-3 6-氯-5-(三氟甲基)烟醛 | CAS号111129-64-7 5-ethyl-4-hydro... | CAS号110339-54-3 N-(3-甲氧基苯乙基)甲酰胺 | CAS号112129-25-6 N-Formyl-2-meth...

1,3-二氧戊环置于二叔丁基过氧化物体系中,化学反应生成甲酸乙酯
参考文献:Zorin,V. V.; Kalashnikov,S. M.; Lapshova,A. A.,Doklady Chemistry,1982,Vol. 262,P. 38-39
标题:Zorin,V. V.; Kalashnikov,S. M.; Lapshova,A. A.,Doklady Chemistry,1982,Vol. 262,P. 38-39

专利信息

专利号:US-2024294462-A1
优先权日:2023-02-15
标题:Method for the Synthesis of Ionizable Lipids Using a Doubly Alkylated Intermediate
发明人：SAADATI FARIBA; TRAN HUY; CIUFOLINI MARCO; ATMURI N D PRASAD
权利人:NANOVATION THERAPEUTICS INC
摘要:Provided herein is a method for the preparation of ionizable, cationic amino lipids using a doubly alkylated nucleophilic intermediate to produce a ketone. The ketone, or a corresponding alcohol, is subjected to one or more synthesis steps to add an ionizable moiety thereto. The method can be advantageously employed for the synthesis of unsymmetrical analogues of the above lipids that would be considerably more difficult to make by alternative strategies. The method can also be used to prepare symmetrical ionizable, cationic amino lipids with fewer steps and/or with the use of fewer hazardous chemicals than known synthesis methods.

专利号:US-8853220-B1
优先权日:2011-02-25
标题 :Synthesis of 2,6,9-tri-substituted-4,8-dinitro-2,6,9-triazabicyclo[3.3.1]nona-3,7-diene intermediates toward the preparation of polyaza-adamantanes
发明人：STERN ALFRED G; DIAMOND CRAIG J
权利人:STERN ALFRED G; DIAMOND CRAIG J; US NAVY
摘要:The present invention relates to methods for synthesizing energetic compounds and intermediates thereof. Specifically, the present invention relates to methods for synthesizing adamantanes and intermediates that are useful in such synthesis. Synthesized intermediates are useful in the synthesis of bicyclic and tricyclic substituted adamantanes. Examples of various intermediates are: acyclic 2-nitromalonaldehyde intermediates, 2,6,9-tri-substituted-4,8-dinitro-2,6,9-triazabicyclo[3.3.1]nona-3,7-dienes and 2,6-dinitro-4,8,9,10-tetra-aza-4,8,9,10-tetra-substituted adamantanes. Intermediates synthesized according to the methods of the present invention are useful toward the synthesis of tetraaza-adamantanes, which can serve as precursors to potentially superior new high-energy-density compounds (HEDCs). The tricyclic intermediate compound has a structure of Formula III: n n n n n n n n n n n n where R is one of a benzyl, 4-methoxybenzyl, acetyl, nitro, formyl, allyl, and a carboethoxyl group.

专利号:WO-2013008044-A1
优先权日:2011-07-08
标题:Synthesis of (+) and (-) 1 -(5,5-diphenyltetrahydrofuran-3- yl)-n,n-dimethylmethanamine, (+) and (-) 1-(2,2-diphenyltetrahydrofuran-3-yl)-n,n- dimethylmethanamine and (+) and (-) 1-(2,2- dffhenyltetrahydrofuran-3-yl)-n-metihylmethanamine
发明人：WAMVAKIDES ALEXANDRE; MOUTSOS VASSILIOS; SCHMITT MARTINE
权利人:ANAVEX LIFE SCIENCES CORP; WAMVAKIDES ALEXANDRE; MOUTSOS VASSILIOS; SCHMITT MARTINE
摘要:The current invention covers the synthesis of (+) and (-) l-(5,5-diphenyItetrahydrofuran-3- yl)-N,N-dimethylmethanamine [(±)1] and [(-)1] respectively, including their pharmacologically acceptable acid addition salts. The new products can be synthesized starting from 5,5-diphenyltetrahydrofuran-2(3H)-one (4) after insertion of an aldehyde group in the α-position, reduction to the prochiral 3-(hydroxymethyl)-1, 1-diphenylbutane-1,4-diol (6), chemoenzymatic desymmetrization using the enzyme Amano Lipase PS30, tosylation, intramolecular nucleophilic attack, hydrolysis, reaction with trifluoromethanesulfonic anhydride and substitution by dimethylamine, thus producing (+) 1-(5,5-diphenyl- tetrahydrofuran-3-yl)-N,N-dimethylmethanamine [(+)1]. Protection of the product of the chemoenzymatic desymmetrization with tert-butyldimethylsilyl chloride, hydrolysis, tosylation, intramolecular nucleophilic attack, removal of tert-butyldimethylsilyl group, reaction with trifluoromethanesulfonic anhydride and substitution by dimethylamine produces (-) 1-(5,5-diphenyltetrahydrofuran-3-yl)-N,N-dimethylmethanamine [(-)1]. It also covers the synthesis of (+) and (-) 1-(2,2-diphenyltetrahydrofuran-3-yl)-N,N- dimethylmethanamine [(+)2] and [(-)2] respectively and (+) and (-) 1-(2,2-diphenyl- tetrahydrofuran-3-yl)-N-methylmethanamine \\(+)3] and [(-)3] respectively, including their pharmacologically acceptable acid addition salts. The new products can be synthesized either starting from the reduction of 5-oxo-2,2-diphenyltetrahydrofuran-3-carboxylic acid (13) with LiA1H 4 , followed by the cyclization of the obtained triol (14) under acidic conditions, reaction with 1S-(-) or1R-(+)camphanic chloride, recrystallization, hydrolysis, reaction with trifluoromethanesulfonic anhydride and substitution by dimethylamine or methylamine, or by the reaction of R-(-) or S-(+) Mandelic acid and acetic acid with racemic 1-(2,2-diphenyltetrahydrofuran-3-yl)-N,N-dimethylmethanamine (2), recrystallization, followed by reaction with an aqueous solution of NaOH. The compounds mentioned in the invention present neuroprotective, antiepileptic and antidepressant activity and can be used as therapeutic agents.

专利号:US-12410140-B2
优先权日:2020-06-19
标题:Method for synthesis of roxadustat and intermediate thereof, and intermediate thereof
发明人：ZHANG YONG; WANG GUO; YANG FEI; LIU FENGWEI; ZHOU CHUNDONG; ZHANG ZITONG
权利人:JUMPCAN SHANGHAI MEDICAL TECH CO LTD
摘要:Disclosed are a method for the synthesis of roxadustat and an intermediate thereof, and an intermediate thereof. In particular, disclosed is a method for the synthesis of compound M1, the method comprising the following steps: carrying out a reaction as shown below between compound SM and compound SM-A under the action of an oxidizing agent. The method of the present invention uses cheap and easily available raw materials, has short reaction steps, produces a high yield, has simple and convenient post-treatment procedures, and is suitable for industrial production.

专利号:US-4277610-A
优先权日:1975-01-27
标 题 :Synthesis of 2,6,10-trimethyl-undecan-1-ol
发明人：COHEN NOAL; SAUCY GABRIEL
权利人:HOFFMANN LA ROCHE
摘要:A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.

专利号:US-7872143-B2
优先权日:2007-06-11
标题 :Facile synthesis of a series of liquid crystalline 2-(4′-alkoxyphenyl)-5-cyanopyridines
发明人：CHIA WIN-LONG; CHENG YU-WEI
权利人:UNIV FU JEN CATHOLIC
摘要:The invention relates to a facile synthesis of a series of 2-(4′-alkoxyphenyl)-5-cyanopyridine liquid crystal compounds which are represented by the following formula (I): n n n n n n n n n n wherein C n H 2n+1 is a linear alkyl group having 2-12 carbon atoms. The synthesis of the liquid crystalline 2-(4′-alkoxyphenyl)-5-cyanopyridine is completed in a two-step reaction. First, a Grignard reagent (such as 4-alkoxyphenylmagnesium bromide) is added to a 3-cyanopyridinium salt (such as N-phenyloxycarbonyl-3-cyanopyridinium chloride) to get a 1,2-dihydropyridine. Then, the 1,2-dihydropyridine is oxidized with o-chloronil to obtain the 2-(4′-alkoxyphenyl)-5-cyanopyridine.