Verfahren zur Herstellung von gegebenenfalls substituiertem Trifluormethylphenacylbromid
申请人:Saltigo GmbH
公开号:EP1752438A2
公开(公告)日:2007-02-14
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von gegebenenfalls substituiertem Trifluormethylphenacylbromid, insbesondere von 3-Trifluormethylphenacylbromid der Formel (I-a)
本发明涉及一种制备任选取代的三氟甲基苯乙酰溴,特别是式 (I-a) 的 3-三氟甲基苯乙酰溴的方法
Rapid Development and Scale-Up of a 1<i>H</i>-4-Substituted Imidazole Intermediate Enabled by Chemistry in Continuous Plug Flow Reactors
作者:Scott A. May、Martin D. Johnson、Timothy M. Braden、Joel R. Calvin、Brian D. Haeberle、Amy R. Jines、Richard D. Miller、Edward F. Plocharczyk、Gregory A. Rener、Rachel N. Richey、Christopher R. Schmid、Radhe K. Vaid、Hannah Yu
DOI:10.1021/op200351g
日期:2012.5.18
The development of reactions in a continuous fashion in plug flow tube reactors (PFR) offers unique advantages to the drug development and scale-up process and can also enable chemistry that would be difficult to perform via batch processing. Herein, we report the development of two different continuous flow approaches to a key 1H-4-substituted imidazole intermediate (5). In a first generation approach, rapid optimization and scale-up of a challenging cyclization reaction was demonstrated in a PFR under GMP conditions to afford 29 kg of protected product 2. This material was further processed in batch equipment to deliver di-HCl salt 4. This first generation approach highlights the rapid development of chemistry in research-scale PFRs and speed to material delivery through linear scale up to a pilot-scale PFR under GMP conditions. In a second generation effort, a more efficient synthetic route was developed, and PFRs with automated sampling, dilution, and analytical analysis allowed for rapid and data-rich reaction optimization of both a key cyclization reaction and thermal removal of a Boc protecting group. This work culminated in 1 kg demonstration runs in a 0.22 L PFR for both continuous steps and shows the potential of commercialization from a lab hood footprint (1-2 MT/year).
[EN] ANTI VIRAL COMPOUNDS<br/>[FR] COMPOSÉS ANTIVIRAUX
申请人:PASTEUR INSTITUT KOREA
公开号:WO2010046780A2
公开(公告)日:2010-04-29
There is provided small molecule anti-human immunodeficiency virus (anti-HIV) compounds as well as a phenotypic cell-based high throughput screening (HTS) assay for their identification.
Selective Debromination of α,α,α‐Tribromomethylketones with HBr–H
<sub>2</sub>
O Reductive Catalytic System
A debrominationreaction to synthesize α‐mono‐ and α,α‐dibromomethylketones with high selectivity from α,α,α‐tribromomethylketones by the controlling of H2OHBr reductive conditions was developed.