89-41-8Relevant articles and documents
Benzimidazole ring-containing propyne amide derivative as well as preparation method and pharmaceutical composition and application thereof
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Paragraph 0145; 0148, (2020/11/13)
The invention relates to a benzimidazole ring-containing propiolamide derivative as shown in the formula I, its medicinal salt and their preparation method, a composition containing one or more of the compounds and an application of the compounds in treating tumor diseases.
PROCESS FOR PRODUCING 3-NITRO-4-ALKOXYBENZOIC ACID
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Page/Page column 4, (2008/06/13)
The present invention provides a process for preparing 3-nitro-4-alkoxybenzoic acid, which comprises the step of subjecting a mixture comprising 4-alkoxybenzoic acid and 40-80% nitric acid, wherein the amount of the 40-80% nitric acid is equal to or more than 8 times that of 4-alkoxybenzoic acid by weight, to a reaction at a temperature of 30-100°C.
Clay supported ammonium nitrate "clayan": A new reagent for selective nitration of arenes
Meshram,Ganesh,Madhavi,Eshwaraiah,Yadav,Gunasekar
, p. 2497 - 2503 (2007/10/03)
The nitration of activated, deactivated and highly functionalized arenes is described using clay-supported ammonium nitrate in the presence of perchloric acid.