Continuous Flow Synthesis of Ketones from Carbon Dioxide and Organolithium or Grignard Reagents
作者:Jie Wu、Xiaoqing Yang、Zhi He、Xianwen Mao、T. Alan Hatton、Timothy F. Jamison
DOI:10.1002/anie.201405014
日期:2014.8.4
describe an efficient continuousflowsynthesis of ketones from CO2 and organolithium or Grignard reagents that exhibits significant advantages over conventional batch conditions in suppressing undesired symmetric ketone and tertiary alcohol byproducts. We observed an unprecedented solvent‐dependence of the organolithium reactivity, the key factor in governing selectivity during the flow process. A facile
atom efficient ‘trifluoroacetic ester/ketone metathesis’ has been sincerely witnessed. Enolizable alkyl (at least two non-hydrogen atoms) aryl ketones were found to react readily with ethyl trifluoroacetate under the promotion of NaH to afford trifluoroacetic ester/ketone exchange products, trifluoromethyl ketones (TFMKs), and aromatic acid esters, which were quite different from the general Claisen
Treating neuropathic pain with neuropeptide FF receptor 2 agonists
申请人:Scully L. Audra
公开号:US20050136444A1
公开(公告)日:2005-06-23
The invention described below relates to the discovery of the neuropeptide FF receptor subtype that mediates acute nociception and chronic neuropathic pain, compounds that selectively interact with this receptor subtype and methods for treating acute pain and chronic neuropathic pain.
Photosensitive compositions containing carbonylic halides as activators
申请人:Dynachem Corporation
公开号:EP0005379A2
公开(公告)日:1979-11-14
Compositions containing a polymerizable, curable or crosslinkable component. a photoinitiator, a colorformer capable of changing color upon contact with a suitable activator and a latent activator containing an organic halide will become insoluble and change color under the influence of actinic radiation. The organic halide is a carbonylic compound such as an aliphatic or cycloaliphatic ketone or an ester or amide of a dicarboxylic acid. The compositions are useful to make resists used in the electronics industry to manufacture printed circuits.
Phototropic photosensitive compositions containing a fluoran colorformer
申请人:Dynachem Corporation
公开号:EP0005380A2
公开(公告)日:1979-11-14
Compositions containing a polymerizable, curable or crosslinkable component, a photoinitiator, a fluoran colorformer and a latent activator that releases or promotes the release of a Lewis acid, will become insoluble and change color under the influence of actinic radiation. These compositions are particularly useful to make dry film photoresists, which are widely used in the electronics industry to manufacture printed circuits.