25370-10-9Relevant academic research and scientific papers
HIGHLY CHEMOSELECTIVE REACTIONS IN PRESENCE OF AROMATIC AMINO GROUPS
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Page/Page column 28; 29; 30, (2017/11/06)
: The invention discloses a novel process for highly chemoselective reactions of substituted anilines without any detectable reaction at aromatic amino group. The invention also relates to a novel process for preparation of neostigmine methylsulphate via chemoselective reaction of 3-amionphenol and aryl dimethylcarbamates.
A New Convenient Method for the Synthesis of Symmetrical and Unsymmetrical N,N'-Disubstituted Ureas
Izdebski, Jan,Pawlak, Danuta
, p. 423 - 425 (2007/10/02)
A new method is described for the preparation of symmetrically and unsymmetrically disubstituted ureas by aminolysis of bis(4-nitrophenyl) carbonate.The second substitution is slower than the first one, and it is possible to isolate monosubstituted intermediates when equimolar amounts of substrates are used.The reaction of the intermediates with different amines give unsymmetrical derivatives of urea.
