Reaction of perfluorinated nitriles with benz-and terephthalamidoximes for the isolation of mixed 1,2,4-oxadiazoles
摘要:
The reaction of perfluorinated nitriles with benz- and terephthalamidoximes afforded amidoximimidates which can form mixed 1,2,4-oxadiazoles in high yield under mild conditions by the action of acid fluorides of perfluorocarboxylic acids. The structure of the compounds obtained was confirmed by the methods of C-13, F-19, and H-1 NMR, and by IR spectroscopy.
[EN] 2, 3, 6-TRISUBSTITUTED-4-PYRIMIDONE DERIVATIVES<br/>[FR] DERIVES DE 2,3,6-TRISUBSTITUE 4-PYRIMIDONE
申请人:MITSUBISHI PHARMA CORP
公开号:WO2004085408A1
公开(公告)日:2004-10-07
A pyrimidone derivative having tau protein kinase 1 inhibitory activity which is represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof; useful for prventive and/or therapeutic treatment of diseass such as neurodegenerative diseases (e.g. Alzheimer disease); wherein Q represents CH or nitrogen atom; R represents a C1-C12 alkyl group; the ring of Formula (I): represents piperazine ring or piperidine ring; each X independently represents a C1-C8 alkyl group, an optionally partially hydrogenated C6-C10 aryl ring, an indan ring or the like; m represents an integer of 1 to 3; each Y independently represents a halogen atom, a hydroxy group, a cyano group, a C1-C6 alkyl group or the like; n represents an integer of 0 to 8; when X and Y or two Y groups are attached on the same carbon atom, they may combine to each other to form a C2-C6 alkylene group.
O-Fluoromethyl carboxylates and O-fluoromethyl carbamates
作者:Manfred Schlosser、Dominique Limat
DOI:10.1016/0040-4020(95)00251-3
日期:1995.5
The fluoride catalyzed reaction between acyl fluorides and monomeric formaldehyde affords fluoromethyl carboxylates in acceptable yields. - Fluoromethyl fluoroformate, readily accessible from the corresponding dichloro compound, condenses with amines to give fluoromethyl carbamates.
The selective O-acylation of enolates providing a simple entry to O-enesters
作者:Dominique Limat、Manfred Schlosser
DOI:10.1016/0040-4020(95)00250-c
日期:1995.5
In the presence of catalytic amounts of a fluoride source, O-trimethylsilyl enethers undergo condensation with acyl fluorides to afford O-enesters with high yields. The intermediates and final products are pure (Z) isomers if only one double bound is in conjugation with the oxygen atom whereas (E) isomers prevail if silyl dienethers or trienethers and O-dienesters or O-trienesters are formed.
Elemental fluorine. Part 19: Electrophilic fluorination of hexyl derivatives bearing electron withdrawing groups
作者:Richard D. Chambers、Mandy Parsons、Graham Sandford、Emmanuelle Thomas、Jelena Trmcic、John S. Moilliet
DOI:10.1016/j.tet.2006.03.113
日期:2006.7
Reaction of a series of model hexyl derivatives of the form C6H13–X (X=Cl, Br, I, CO2Me, COMe, CHO) with both elemental fluorine and Selectfluor™ was studied in order to assess the impact of electron withdrawing functional groups upon fluorination of an alkyl chain. Fluorination generally occurs at secondary sites, with a slight preference for those that are furthest removed from the electron withdrawing
研究了一系列形式为C 6 H 13 –X(X = Cl,Br,I,CO 2 Me,COMe,CHO)的模型己基衍生物与元素氟和Selectfluor™的反应,以评估氟的影响。烷基链氟化时的吸电子官能团。氟化通常发生在次要位置,与亲电子取代过程一致,略微偏爱从吸电子基团离得最远的位置,尽管在大多数情况下会获得氟化产物的混合物。
Synthetic methods and reactions. 46. Oxidation of organic compounds with uranium hexafluoride in haloalkane solutions
作者:George A. Olah、John Welch
DOI:10.1021/ja00485a024
日期:1978.8
Uraniumhexafluoride was found to be an active, yet selective, oxidizing agent for organic compounds. It is very effective in oxidizing methyl ethers, benzylic bromides, N,N-dimethylalkylamines, hydrazenes, benzylic alcohols, and oximes to carbonyl compounds. Benzyl and benzhydryl ethers were cleaved to the parent alcohols. The intermediate oxonium ions formed in the oxidation of ethers were trapped