Diverse Hetero Atoms In The Polycyclo Ring System Patents (Class 205/425)
-
Patent number: 6969451Abstract: A fluid-type multiple electrochemical system. The system includes a substrate for an electric circuit having a plurality of electrode parts formed at regular intervals. The electrode parts each include a reference electrode and an auxiliary electrode. Also provided is a fluid-type substrate having a fluid injection part, a fluid ejection part and a plurality of fluid storages. The fluid storages are formed at the same regular intervals as the electrode parts of the substrate and are connected with each other through fluid passages. The system also includes a sensor substrate having a plurality of unit sensors formed at the same regular intervals as the electrode parts of the substrate. Each unit sensor has an electrode part, an electrode pad for supplying power voltage simultaneously, and an electrode wiring.Type: GrantFiled: December 30, 2002Date of Patent: November 29, 2005Assignee: Electronics and Telecommunications Research InstituteInventors: Dong-Ho Shin, Sun Kil Kang, Hyokyum Kim, Haesik Yang, Youn Tae Kim
-
Patent number: 6419814Abstract: Organoiodonium salts, including certain novel symmetrical and unsymmetrical diaryliodonium;. polyiodonium and cyclic iodonium salts are synthesized by a significantly improved electrochemical coupling reaction which provides greater control and selectivity over the end product produced. Reaction mixtures comprising aryliodides and/or aromatic substrates are electrolyzed in novel reaction mediums comprising strong acid electrolyte, lower carboxylic acid, and preferably in the presence of acid anhydride in amounts >10 percent by-weight, and up to 50 percent by-weight or more, to provide a high degree of product selectivity, and at yields which can even be quantitative. The methods are conducted by introducing the electrolysis reaction mixture into an undivided electrochemical cell equipped with a cathode and preferably a conductive carbon anode.Type: GrantFiled: November 2, 2000Date of Patent: July 16, 2002Assignee: Cornell Development LLCInventors: Derek Pletcher, Norman L. Weinberg
-
Patent number: 6294069Abstract: A process for the preparation of chiral 2-aryl or 2-heterocyclyl-propionic acids of the formula wherein the substituents are as defined in the specification.Type: GrantFiled: January 27, 2000Date of Patent: September 25, 2001Assignee: Centre National de la Recherche ScientifiqueInventors: Muriel Durandetti, Isabelle Lachaise, Jean-Yves Nedelec, Jacques Perichon
-
Patent number: 6197185Abstract: The present invention provides a process for preparing an exo-methylenepenam compound represented by the general formula (5) characterized in that a &bgr;-lactam halide compound represented by the general formula (2) is subjected to an electroreduction process to obtain the exo-methylenepenam compound.Type: GrantFiled: December 10, 1999Date of Patent: March 6, 2001Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Sigeru Torii, Hideo Tanaka, Michio Sasaoka, Yutaka Kameyama
-
Patent number: 6110348Abstract: A main body of a NOx sensor has a sensor cell and defines a reference gas chamber and a sample gas chamber therein. The sample gas chamber has a wall formed by a solid electrolytic substrate having an oxygen ion conductivity. The sensor cell is disposed between the reference gas chamber and the sample gas chamber for detecting a concentration of a NOx gas. A pump cell body of the NOx sensor has a surface facing to the sample gas chamber and has a pump cell for introducing and exhausting an oxygen gas to and from the sample gas chamber. In manufacturing this NOx sensor, the main body and the pump cell body are fabricated individually as separate items. The main body and the pump cell body are sintered independently. Then, the main body and the pump cell body are assembled into to the NOx sensor.Type: GrantFiled: June 9, 1998Date of Patent: August 29, 2000Assignee: Denso CorporationInventors: Tomio Sugiyama, Naoto Miwa, Masahiro Shibata, deceased, Hiromi Sano
-
Patent number: 5968335Abstract: A process for preparing a 3-alkoxymethylcephem compound represented by the formula (II) ##STR1## where R.sub.1 is a hydrogen atom, amino or protected amino, R.sub.3 is a hydrogen atom or carboxylic acid protective group and R.sub.4 is lower alkyl, which process is characterized in that a 3-thiomethylcephem compound represented by the formula (I) ##STR2## where R.sub.1 and R.sub.3 are as defined above and R.sub.2 is aryl which may have a substituent, is electrolytically oxidized in an electrooxidation reaction system in the presence of a lower alcohol using as a positive electrode, a material selected from the group consisting of platinum, tin, aluminum, stainless steel, nickel, lead oxide, carbon, iron oxide and titanium, to obtain the 3-alkoxymethylcephem compound.Type: GrantFiled: November 7, 1997Date of Patent: October 19, 1999Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Sigeru Torii, Hideo Tanaka, Michio Sasaoka, Yutaka Kameyama
-
Patent number: 5700364Abstract: A process for synthesizing the compounds ##STR1## wherein X is halo, consists of, at a minimum, electrochemical oxidation of the allyl acetonide reactant with halide salt in an aqueous system, the desired compounds being useful as intermediates for the synthesis of inhibitors of renin or HIV protease or other proteases.Type: GrantFiled: October 30, 1996Date of Patent: December 23, 1997Assignee: Merck & Co., Inc.Inventor: Kai Rossen
-
Patent number: 5660711Abstract: A process is described for preparing 3-exomethylene cephalosporanic acid derivatives for use in the synthesis of cephalosporin antibiotics such as ceftibuten. The process comprises electrochemical reduction of a compound of the formula (IV) ##STR1## wherein: R.sup.3 is CH.sub.3 C(O)--; ##STR2## is an optional sulfoxide group; n is 2 or 3; R.sup.1 is H and R is H or NHR.sup.2, where R.sup.2 is H or a protecting group selected from C.sub.6 H.sub.5 CH.sub.2 OC(O)--, C.sub.6 H.sub.5 C(O)-- or C.sub.1 -C.sub.6 alkoxy-C(O)--; or wherein R and R.sup.1 together with the carbon atom to which they are attached comprise --C(O)--, and produces the desired 3-exomethylene compounds with low levels of the corresponding 3-methyl tautomers.Type: GrantFiled: December 8, 1995Date of Patent: August 26, 1997Assignee: Schering CorporationInventors: Derek Walker, Junning Lee, Charles R. Martin, Haiyan Zhang, Loris Sogli, Ermanno Bernasconi, Vinod Parakkal Menon