CAS: 93-70-9; 2'-Chloroacetoacetanilide

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3-氧丁酸,邻氯苯胺置于n,N'-二环己基碳二亚胺体系中,用 二氯甲烷 作为反应溶剂,以80%的收率获得产物2-氯乙酰乙酰替苯胺
参考文献:One-Pot Synthesis Of 3-Hydroxyquinolin-2(1H)-Ones From N-Phenylacetoacetamide Via Phi(ococf3)2-Mediated α-Hydroxylation And H2So4-Promoted Intramolecular Cyclization
标题:One-Pot Synthesis Of 3-Hydroxyquinolin-2(1H)-Ones From N-Phenylacetoacetamide Via Phi(ococf3)2-Mediated α-Hydroxylation And H2So4-Promoted Intramolecular Cyclization
摘要:A Clean,One-Pot Synthesis Of The Biologically Important 3-Hydroxyquinolin-2(1H)-One Compounds Has Been Realized From The Readily Available N-Phenylacetoacetamide Derivatives Through A Phi(ococf3)(2)-Mediated Alpha-Hydroxylation And A H2So4-Promoted Intramolecular Condensation. The Hydroxyl Group In The Generated Alpha-Hydroxylated Intermediate Can Be Well Tolerated In The Second H2So4-Promoted Cyclization Step.
DOI:10.1021/jo400541S

专利信息

专利号:US-4118384-A
优先权日:1976-02-21
标题 :Process for preparation of azo dyestuffs by coupling in presence of aromatic sulphonic acid-formaldehyde reaction product
发明人：MOLLS HANS-HEINZ; SCHIWY WILLY; HORNLE REINHOLD; NEBELING REINHARD
权利人:BAYER AG
摘要:Dyestuff dispersions and dyestuff solutions free from salt or at least having a low salt content are obtained in that the diazotization is carried out with addition of free dispersing agent acid to which, after the synthesis, either no basic agents are added or basic agents are added only up to a pH value of 3. The disclosed process gives dyestuff compositions of low salt content and results in readily dispersible dyestuffs when water insoluble dyestuffs are prepared and stable solutions when water soluble dyestuffs are prepared. The process is widely applicable and chemical constitution of the dyestuffs is conventional.