<i>C</i>
-Bridged Bispyrrolidines and Bispiperidines as New Ligands
作者:Tim-Daniel J. Stumpf、Manfred Steinbach、Magdalene Höltke、Gerold Heuger、Franka Grasemann、Roland Fröhlich、Siegfried Schindler、Richard Göttlich
DOI:10.1002/ejoc.201801075
日期:2018.11.1
The preparation of methylene‐bridged C2‐symmetric nitrogen‐heterocycles as a new class of ligands is described, including aliphatic and aromatic systems. The separation of diastereomers and the application of the copper complexes of these ligands for cyclopropanation‐reactions proves the applicability of these new types of ligands
An ionic liquid as reaction medium for the synthesis of halo-containing β-enaminones at room temperature
作者:Marcos A. P. Martins、Emerson A. Guarda、Clarissa P. Frizzo、Mara R. B. Marzari、Dayse N. Moreira、Nilo Zanatta、Helio G. Bonacorso
DOI:10.1007/s00706-008-0923-3
日期:2008.11
, Et , Bu , allyl, tert -amyl, CH2CH2OH, Bn , Ph ] were synthesized using the ionic liquid [bmim]BF4 at roomtemperature. It is demonstrated that this ionic liquid is a reaction medium suitable for the amination of β-alkoxyvinyl halomethyl ketones. The advantages of this method are the absence of solvents, short reaction times, and good yields.
一系列二十个卤代甲基化的β-烯酮[ R C(O)CH = C( R 1)N R 3 R 4,其中 R = CF 3,CCl 3,CHCl 2; R 1= H, Me , Ph ; R 3 = H, Me , Bu , Et ; R 4 = Me , Et , Bu ,烯丙基, 叔 戊基,CH 2在室温下使用离子液体[bmim] BF 4合成CH 2 OH, Bn 和 Ph ] 。已经证明该离子液体是适合于β-烷氧基乙烯基卤代甲基酮的胺化的反应介质。该方法的优点是无溶剂,反应时间短,产率高。
[EN] HALOGEN SUBSTITUTED DIKETONES, PYRAZOLE COMPOUNDS AND PROCESSES FOR THE MANUFACTURE OF PYRAZOLE COMPOUNDS<br/>[FR] DICÉTONES SUBSTITUÉES PAR UN HALOGÈNE, COMPOSÉS DE PYRAZOLE ET LEURS PROCÉDÉS DE PRODUCTION
申请人:SOLVAY
公开号:WO2017129759A1
公开(公告)日:2017-08-03
The present invention concerns new halogen substituted diketone compounds, new pyrazole compounds, processes for the manufacture of pyrazole compounds and processes for the manufacture of agrochemical or pharmaceutical compounds.
[EN] DEUTERATED HETEROCYCLIC COMPOUNDS AND THEIR USE AS IMAGING AGENTS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES DEUTÉRÉS ET LEUR UTILISATION COMME AGENTS D'IMAGERIE
申请人:HOFFMANN LA ROCHE
公开号:WO2015173225A1
公开(公告)日:2015-11-19
The present invention relates to deuterated and optionally detectably labeled compounds of formula (I): R1-A-R2 and formula (V) and salts thereof, wherein Rl, R2, A, and X10-X19 have any of the values defined in the specification. Also included are pharmaceutical compositions comprising such compounds and salts, and methods of using such compounds and salts as imaging agents, in particular in measuring the radioactive signal of the compound associated with amyloid deposits and/or tau protein aggregates.
Regioselective Synthesis of Rare 3-Halomethylphenols Based on Formal [3+3] Cyclizations of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes
作者:Peter Langer、Mathias Lubbe、Constantin Mamat
DOI:10.1055/s-2008-1077877
日期:——
The cyclization of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with halo-substituted enones afforded 3-difluorochloromethyl-, 3-difluorobromomethyl-, 3-dichloromethyl-, and 3-trichloro-methylphenols with very good regioselectivity. The hydrolysis of the dichloromethyl group gave functionalized 3-formylphenols, which are not readily available by other methods.