Hunig's base-magnesium chloride mediated carbon alkylation and oxygen acylation of benzoylacetonitrile
作者:Tarek S. Mansour
DOI:10.1016/0040-4039(88)85183-9
日期:1988.1
In the presence of Hunig's base and anhydrous magnesium chloride benzoylacetonitrile (1) reacts with 2-haloketones and -esters to give C-alkylated products which may cyclize to polysubstituted furans whereas with acid chlorides O-acylated products are obtained as separable mixtures of e and Z isomers.
This invention provides novel pyrazole-4-acetic acid derivatives which have utility as therapeutic agents which exhibit anxiolytic, anticonvulsant and muscle relaxant effects in warm blooded animals. Illustrative of an invention compound is 3-(dimethylamino)-5-(4-methylphenyl)-1H-pyrazole-4-acetamide: ##STR1##
(EN) This invention provides novel pyrazole-4-acetic acid derivatives corresponding to formula (I) where Y is hydrogen or halogen, C1-C4 alkyl or C1-C4 alkoxy substituent; Z is a hydroxy, C1-C4 alkoxy or -NRR substituent; and R is hydrogen or a C1-C4 alkyl substituent; and pharmaceutically acceptable salts thereof, which have utility as therapeutic agents which exhibit anxiolytic, anticonvulsant and muscle relaxant effects in warm blooded animals.(FR) Nouveaux dérivés d'acide pyrazole-4-acétique correspondant à la formule (I) dans laquelle Y représente hydrogène ou un substituant halogène, alkyle C1-C4 ou alcoxy C1-C4; Z représente un substituant hydroxy, alcoxy C1-C4 ou -NRR; et R représente hydrogène ou un substituant alkyle C1-C4; et leurs sels pharmaceutiquement acceptables. Il présente une utilité comme agent thérapeutique caractérisé par des effets anxiolytiques, anticonvulsivants et relaxants musculaires chez les animaux à sang chaud.