Preparation method for N-phenyl indolone

The invention especially relates to a preparation method for N-phenyl indolone, belonging to the field of organic synthesis. The preparation method for N-phenyl indolone comprises the following steps:subjecting diphenylamine (a compound as shown in a formula II) and chloroacetyl chloride (a compound...

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Bibliographic Details
Main Authors WANG QINGSHAN, LUO GUANGSHUN, HE QIZHONG
Format Patent
LanguageChinese
English
Published 04.09.2018
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention especially relates to a preparation method for N-phenyl indolone, belonging to the field of organic synthesis. The preparation method for N-phenyl indolone comprises the following steps:subjecting diphenylamine (a compound as shown in a formula II) and chloroacetyl chloride (a compound as shown in a formula III) to a condensation reaction to prepare 2-chloro-N,N-diphenylacetamide (acompound as shown in a formula IV); subjecting 2-chloro-N,N-diphenylacetamide and acetate to an esterification reaction so as to obtain 2-acetoxy-N,N-diphenylacetamide (a compound as shown in a formula V); and subjecting 2-acetoxy-N,N-diphenylacetamide to a ring closure reaction so as to obtain N-phenyl indolone. The preparation method provided by the invention is a clean high-efficiency synthesis method for N-phenyl indolone; in the whole preparation process, high-contamination raw materials are discarded, and reaction temperature is lowered; and the method is friendly to environment and safe and simple to operate, a
Bibliography:Application Number: CN201810171549