Regioselective Addition of Alcohols to Internal 1-Aryl-1-alkynes Catalyzed by a Triangular Heterobimetallic Ir<sub>2</sub>Pd Sulfido Cluster
作者:Dai Masui、Youichi Ishii、Masanobu Hidai
DOI:10.1246/cl.1998.717
日期:1998.8
The triangular heterobimetallic sulfido cluster[(Cp*Ir)2(μ3-S)2PdCl2] prepared from [PdCl2(cod)] and [Cp*IrCl(μ-SH)2IrCp*Cl] was found to catalyze the addition of alcohols to alkynes to give the corresponding ketals. In particular, internal 1-aryl-1-alkynes were transformed into the corresponding 2,2-dialkoxy-1-arylalkanes with high regioselectivity. The analogous Ir2PtS2 cluster proved to be much less selective.
A compound of the formula I ##STR1## or a pharmaceutically acceptable salt or hydrate thereof, wherein X, Y, Z and R.sup.1 to R.sup.7 are as defined herein, are inhibitors of H. pylori and therefore of use in the treatment and prevention of peptic ulcers, gastritis, dyspepsia, and gastric cancer.
Balloon for medical tube and medical tube equipped with the same
申请人:——
公开号:US20010016727A1
公开(公告)日:2001-08-23
A cylindrical balloon for medical tubes, which is susceptible to bending operations, comprises a low stretchable section formed, by a partial cross-linking treatment, on the balloon along the circumferential direction thereof. A medical tube equipped with a balloon comprises a shaft tube for being inserted into a living body, a cylindrical balloon liquid-tightly connected to the shaft tube at the periphery on the tip thereof, a first lumen which is formed within the shaft tube and which communicates with the interior of the balloon, and at least one second lumen which is formed within the shaft tube and which is opened at the tip of the shaft tube; or comprises a shaft tube which is inserted into a living body, a cylindrical balloon, one end of which is liquid-tightly connected to the shaft tube at the tip thereof, a long tool for medical treatments or for diagnoses, whose tip portion is liquid-tightly connected to the other end of the balloon directly or indirectly, and a lumen which is formed within the shaft tube and communicates with the interior of the balloon so that a liquid can pass through the balloon and which accommodates the long tool for medical treatments or for diagnoses, wherein the cylindrical balloon is the same as that defined above.
Recording method for printing using two liquids on recording medium
申请人:SEIKO EPSON CORPORATION
公开号:US20030069329A1
公开(公告)日:2003-04-10
There is provided a recording method that can realize images which possess excellent fixation on recording media, excellent rubbing/scratch resistance and good quality. In the recording method, an ink composition comprising at least a colorant, resin emulsion particles, a water-soluble organic solvent, and water and a reaction solution containing a reactant capable of forming coagulate upon contact with the ink composition are deposited onto a recording medium to perform printing. This recording method comprises the steps of: depositing the reaction solution onto the recording medium; depositing the ink composition onto the recording medium to record an image; and washing the recording medium, on which the reaction solution and the ink composition have been deposited to perform printing, with a polar so olar solvent.