CAS: 1191-99-7; 2,3-Dihydrofuran

上下游产品

CAS号1708-29-8 2,5-二氢呋喃 | CAS号72800-48-7 1,1,1-trichloro... | CAS号109-99-9 四氢呋喃 | CAS号557-40-4 烯丙基醚 | CAS号187737-37-7 propene | CAS号74-98-6 丙烷 | CAS号64-17-5 乙醇 | CAS号201230-82-2 carbon monoxide | CAS号1057260-27-1 7-氟-1H-吲哚-3-乙醇 | CAS号1004-30-4 2-prop-2-enoxyo... | CAS号105773-93-1 2-氨基-5-(2-羟乙基)噻唑 | CAS号111833-32-0 5-hex-5-enyl-2,... | CAS号1046812-03-6 4,5-二氢呋喃-3-硼酸频那醇酯 | CAS号1046812-02-5 2,3-二氢-5-呋喃基硼酸频哪醇酯 | CAS号101349-12-6 5-氟色醇 | CAS号32774-29-1 5-溴色醇 | CAS号5371-52-8 2-羟基四氢呋喃 | CAS号25714-71-0 4-羟基丁醛

2,5-二氢呋喃置于lanthanum(III) Oxide体系中,化学反应 0.5H,反应生成2,3-二氢呋喃
参考文献:Double Bond Migration Of Allyl Ethers Over Solid Base Catalysts
标题:Double Bond Migration Of Allyl Ethers Over Solid Base Catalysts
摘要:多种固体碱催化剂上进行了烯丙基醚的双键迁移反应.氧化镁,Cao,Sro,和la2O3表现出高活性.产物中高的顺/反比表明反应通过顺式-π-烯丙基负离子作为中间体进行.
Doi:10.1246/cl.1981.341

专利信息

专利号:WO-2023233371-A1
优先权日:2022-06-03
标 题:A continuous flow process for synthesis of organic azides
发明人：GNANAPRAKASAM BOOPATHY; PANDEY AKANKSHA M; MONDAL SHANKHAJIT
权利人:INDIAN INSTITUTE OF SCIENCE EDUCATION AND RES PUNE IISER PUNE
摘要:The present disclosure relates generally to the field of synthetic organic chemistry. More specifically, the disclosure is directed to a continuous flow process for synthesis of azides from alcohols and peroxides, wherein the process comprises azidation with trimethylsilyl azide and a catalyst Amberlyst-15. It is a non-hazardous, mild and controlled reaction giving good yields of azides. The azides can be further employed for synthesis of medicinally and industrially useful chemicals.

专利号:US-11548898-B2
优先权日:2017-07-06
标题 :Synthesis of halichondrins
发明人：KISHI YOSHITO; AI YANRAN; YE NING; WANG QIAOYI; YAHATA KENZO; ISO Kentaro; NAINI SANTHOSH REDDY; YAMASHITA SHUJI; LEE JIHOON; OHASHI ISAO; FUKUYAMA TAKASHI
权利人:HARVARD COLLEGE; EISAI R&D MAN CO LTD
摘要:The present invention provides methods for the synthesis of ketones involving a Ni/Zr-mediated coupling reaction. The Ni/Zr-mediated ketolization reactions can be used in the synthesis of halichondrins (e.g., halichondrin A, B, C; homohalichondrin A, B, C; norhalichondrin A, B, C), and analogs thereof. Therefore, the present invention also provides synthetic methods useful for the synthesis of halichondrins, and analogs thereof. Also provided herein are compounds (i.e., intermediates) useful in the synthesis of halichondrins, and analogs thereof. In particular, the present invention provides methods and compounds useful in the synthesis of compound of Formula (H3-A).

专利号:WO-2009104605-A1
优先权日:2008-02-18
标 题 :Novel intermediate for synthesis of ascofranone having various physiological activities, and novel shortened total synthesis method for ascofranone using the same
发明人：SAIMOTO HIROYUKI; HAGA YASUSHI
权利人:ARIGEN PHARMACEUTICALS INC; SAIMOTO HIROYUKI; HAGA YASUSHI
摘要:In the synthesis of ascofranone, a compound represented by formula (III), (IV), (V) or (VII) or an optical isomer thereof is used as an intermediate for the synthesis. [In the formulae, R 1 and R 2 independently represent a hydrogen atom, a C 1-7 alkyl group, a phenoxyalkyl group having a halogen atom on a carbon atom in a benzene ring therein, or a phenyl group having a C 1-7 alkoxy group or a C 1-7 alkoxycarbonyl group on a carbon atom in a benzene ring therein; and X represents a halogen atom or a group R 5 SO 3 (wherein R 5 represents a C 1-7 alkyl group or a phenyl group having a C 1-7 alkyl group on a carbon atom in a benzene ring therein).] By using the compound, it becomes possible to reduce the number of steps required for the total synthesis of ascofranone to 7 or 8 from 12 which is a number of the steps required for the conventional ascofranone total synthesis processes.

专利号:US-9388131-B2
优先权日:2011-04-27
标题:Automated synthesis of small molecules using chiral, non-racemic boronates
发明人：BURKE MARTIN D; LI JUNQI; GILLIS ERIC P
权利人:UNIV ILLINOIS
摘要:Provided are methods for making and using chiral, non-racemic protected organoboronic acids, including pinene-derived iminodiacetic acid (PIDA) boronates, to direct and enable stereoselective synthesis of organic molecules. Also provided are methods for purifying PIDA boronates from solution. Also provided are methods for deprotection of boronic acids from their PIDA ligands. The purification and deprotection methods may be used in conjunction with methods for coupling or otherwise reacting boronic acids. Iterative cycles of deprotection, coupling, and purification can be performed to synthesize chiral, non-racemic compounds. The methods are suitable for use in an automated chemical synthesis process. Also provided is an automated small molecule synthesizer apparatus for performing automated stereoselective synthesis of chiral, non-racemic small molecules using iterative cycles of deprotection, coupling, and purification.

专利号:US-2024116890-A1
优先权日:2022-09-28
标 题 :Large scale synthesis of cannabinol
发明人：COLLINS ARIANNA C; CRUCES IVAN; RAY KYLE; CRUCES WESTLEY
权利人:COLORADO CHROMATOGRAPY LLC
摘要:Methods for producing cannabinol, cannabivarin, or derivatives thereof are disclosed. The methods disclosed herein can be employed for large scale synthesis or semi-synthesis of the compounds, including multi-kilogram quantities of the compounds.

专利号:US-9012625-B2
优先权日:2009-04-07
标 题 :Method for the synthesis of a trisaccharide
发明人：DÉKANY GYULA; Ã?GOSTON KÃ?ROLY; BAJZA ISTVAN; BOUTET JULIEN; BØJSTRUP MARIE; FANEFJORD METTE; PÉREZ FIGUEROA IGNACIO; HEDEROS MARKUS; HORVATH FERENC; KOVÃ?CS-PÉNZES PIROSKA; KRÖGER LARS; OLSSON JOHAN; RÖHRIG CHRISTOPH; SCHROVEN ANDREAS; VRASIDAS IOANNIS
权利人:DÉKANY GYULA; Ã?GOSTON KÃ?ROLY; BAJZA ISTVAN; BOUTET JULIEN; BØJSTRUP MARIE; FANEFJORD METTE; PÉREZ FIGUEROA IGNACIO; HEDEROS MARKUS; HORVATH FERENC; KOVÃ?CS-PÉNZES PIROSKA; KRÖGER LARS; OLSSON JOHAN; RÖHRIG CHRISTOPH; SCHROVEN ANDREAS; VRASIDAS IOANNIS; GLYCOM AS
摘要:The present invention relates to an improved synthesis of a trisaccharide of the formula (1), novel intermediates used in the synthesis and the preparation of the intermediates.