Suarez, Antonio; Vila, Jose Manuel; Pereira, Maria Teresa, Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 1990, vol. 20, p. 1425 - 1440
Catalyst-Controlled Regioselective Suzuki Couplings at Both Positions of Dihaloimidazoles, Dihalooxazoles, and Dihalothiazoles
作者:Neil A. Strotman、Harry R. Chobanian、Jiafang He、Yan Guo、Peter G. Dormer、Christina M. Jones、Janelle E. Steves
DOI:10.1021/jo100148x
日期:2010.3.5
dihaloazoles can be monoarylated at a single C−X bond with high selectivity via Suzukicoupling. By changing the palladium catalyst employed, the selectivity can be switched for some dihaloazoles, allowing for Suzukicoupling at the other, traditionally less reactive C−X bond. These conditions are applicable to coupling of a wide variety of aryl-, heteroaryl-, cyclopropyl-, and vinylboronic acids with
Positive photoresist composition for exposure to far ultraviolet ray
申请人:——
公开号:US20010008739A1
公开(公告)日:2001-07-19
A positive photoresist composition for exposure to a far ultraviolet ray which comprises (A) a compound which generates an acid upon irradiation with an actinic ray or radiation, (B) a resin which contains a repeating unit corresponding to hydroxystyrene and solubility of which increases in an alkaline developing solution by the action of an acid, and (C) (1) at least one solvent selected from the group consisting of propylene glycol monomethyl ether acetate and propylene glycol monomethyl ether propionate, and (2) at least one solvent selected from the group consisting of propylene glycol monomethyl ether and ethoxyethyl propionate. The positive photoresist composition of the present invention is suitable for exposure to a far ultraviolet ray, particularly a KrF excimer laser beam, is improved in line edge roughness and micro grain, is excellent in uniformity of carting on a substrate and has less particles in its resist solution.
A positive photoresist composition comprising the components of: (a) a resin which decomposes by the action of an acid, thereby having an increased solubility in an alkali developer; and (b) a compound which is represented by the formula (1) and generates an acid by exposure to active rays or radiation, and a compound which is represented by the formula (2) and generates an acid by exposure to active rays or radiation.
Derivatives of 3-methyl-imidazo [4,5-c]pyrazole having therapeutic activity and a process for the preparation theref
申请人:CAMILLO CORVI S.p.A.
公开号:EP0190457A1
公开(公告)日:1986-08-13
The present invention concerns novel derivatives of 3-methyl-imidazo [4,5-c] pyrazole of formula
Said compounds have therapeutical activity, in particular said compounds are endowed with an intense CNS depressant activity. The invention furthermore concerns a process for preparing the compounds of formula (I).
A positive resist composition comprising (A) a resin having a specific structure and capable of decomposing under action of an acid to increase solubility in an alkali developer, and (B) a compound capable of generating an acid upon irradiation with an actinic ray or radiation.