Process for Producing 3,3,3-Trifluoropropionaldehyde
申请人:Komata Takeo
公开号:US20090105506A1
公开(公告)日:2009-04-23
There is provided a process for producing 3,3,3-trifluoropropionaldehyde, including the step of hydrolyzing a benzyl vinyl ether of the formula [1] in the presence of a catalyst selected from the group consisting of Arrhenius acids and Lewis acids,
where R represents phenyl or phenyl having a substituent R
1
selected from the group consisting of alkyl groups, alkoxy groups, halogen atoms, nitro groups and amino groups.
PROCESS FOR PRODUCING 3,3,3-TRIFLUOROPROPIONALDEHYDE
申请人:Central Glass Co., Ltd.
公开号:EP1930310B1
公开(公告)日:2011-11-16
Process For Producing 3,3,3-Trifluoropropionic Acid
申请人:Komata Takeo
公开号:US20090247786A1
公开(公告)日:2009-10-01
A benzyl vinyl ether represented by the following formula
is hydrolyzed in the presence of a catalyst selected among Arrhenius acids and Lewis acids to obtain 3,3,3-trifluoropropionaldehyde. Subsequently, the 3,3,3-trifluoropropionaldehyde is oxidized with an oxidizing agent. Thus, 3,3,3-trifluoropropionic acid can be more advantageously produced than in conventional techniques from an inexpensive starting material.
ENDOSCOPE DESIGNS AND METHODS OF MANUFACTURE
申请人:Wright George
公开号:US20110263941A1
公开(公告)日:2011-10-27
Various embodiments of the present invention comprise endoscopes for viewing inside a cavity of a body such as a vessel like a vein or artery. These endoscopes may include at least one solid state emitter such as a light emitting diode (LED) that is inserted into the body cavity to provide illumination therein. Certain embodiments of the invention comprise disposable endoscopes that can be fabricated relatively inexpensively such that discarding these endoscopses after a single use is cost-effective. The endoscope may comprise a lens holder on a distal end of the endoscope for collection of light reflected from surfaces within the body in which the endoscope is inserted. This lens holder may have an inner cavity through which light passes along an optical path. Reflective surfaces on sidewalls of the inner cavity may direct light along this optical path. The endoscope may further comprise an elongated support structure for supporting a plurality of lenses disposed along the optical path. This optical path may lead to a detector onto which images are formed.