Cu‐ or Fe‐based catalyst systems have been reported to selectively catalyze the N,N‐diarylation or N‐monoarylation of benzoxazoles ring‐opening with aryliodides in the absence of additional added ligand in polyethyleneglycol under an inert atmosphere. Two types of coupling products (triphenylamines and diphenylamines) have been examined and the reaction routes can be simply controlled by changing
Utilizing the dramaticacceleratingeffect of 2-aminophenols, we developed a copper-catalyzed system for the selective synthesis of di- and triphenylamines. In addition, N- and O-arylation could be achieved in coupling reactions between 2-aminophenol and nitroaryl halides.
One-Pot Synthesis of Diarylamines from Two Aromatic Amines via Oxidative Dearomatization–Imino Exchange–Reductive Aromatization
作者:Li Zhang、Weibin Wang、Renhua Fan
DOI:10.1021/ol4007162
日期:2013.4.19
A one-pot synthetic strategy for diarylamines using only aromaticamines as starting materials has been developed. This method involved a PhI(OAc)2-induced oxidative dearomatization of N-sulfonyl protected para-substituted anilines, a Bi(OTf)3-catalyzed imino exchange reaction between N-sulfonyl cyclohexadienimines and aromaticamines, and a CF3COOH/Zn mediated reductive aromatization of the resulting
COMPOUND WHICH INHIBITS TELOMERE-BINDING PROTEIN, AND TELOMERE-BINDING PROTEIN INHIBITOR CONTAINING SAME
申请人:HIROSHIMA UNIVERSITY
公开号:US20210024455A1
公开(公告)日:2021-01-28
The compound according to the present invention is a compound represented by the following chemical formula:
wherein, in the above-described chemical formula, R
1
is oxygen or sulfur, and R
2
to R
6
are each independently selected from hydrogen, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an acyl group having 1 to 6 carbon atoms and a nitro group.