Direct synthesis of 2-substituted benzonitriles <i>via</i> alkylcyanation of arynes with <i>N</i>,<i>N</i>-disubstituted aminomalononitriles
作者:Wen Bao、Zhu-Peng Gao、Da-Ping Jin、Cao-Gen Xue、Huan Liang、Ling-Sheng Lei、Xue-Tao Xu、Kun Zhang、Shao-Hua Wang
DOI:10.1039/d0cc01591a
日期:——
An efficient alkylcyanation of in situ generated arynes by N,N-disubstituted aminomalononitriles is described, enabling the direct synthesis of 2-substituted benzonitriles.
A mild and efficient method for the synthesis of cyanoformamides from N,N-disubstituted aminomalononitriles with CsF as the promoter has been developed. This method features a wide substrate scope and high reaction efficiency, and will facilitate corresponding cyanoformamide-based biological studies and synthetic methodology development.
A Simple One-Pot Reaction to the Bis-dibenzo[<i>b,f</i>][1,5]diazocines: Useful Precursors of Novel Macrocycles
作者:Ying Cheng、Bo Wang、Otto Meth-Cohn
DOI:10.1055/s-2003-42448
日期:——
The title compounds, namely 8,8'-bis-5,6,11,12-tetrahydrodibenzo[b,f][1,5]diazocines, have been synthesized in 36-81% yields through a one-pot reaction by treatment of N,N,N',N'-tetramethylbiphenyldiamine with the Vilsmeier's reagents derived from substituted N-methylformanilides and POCl 3 . This was another application of 't-amino effect' in the synthesis of eight-membered ring systems. These products
The present invention provides a 2,3-dihydro-6-nitroimidazo[2,1-b]oxazole compound represented by the following general formula:
wherein R
1
represents a hydrogen atom or C1-C6 alkyl group, n represents an integer of 0 to 6, R
2
represents a group —OR
3
or the like, and R
3
represents a hydrogen atom, C1-C6 alkyl group or the like, or R
1
and —(CH
2
)
n
R
2
may bind to each other together with carbon atoms adjacent thereto through nitrogen atoms so as to form a spiro ring represented by the general formula (H):
wherein R
41
is hydrogen, C1-C6 alkyl group or the like. The present compound has an excellent bactericidal action against
Mycobacterium tuberculosis
, multi-drug-resistant
Mycobacterium tuberculosis
, and atypical acid-fast bacteria.
2,3-Dihydro-6-Nitroimidazo (2,1-b) Oxazole Compounds for the Treatment of Tuberculosis
申请人:Tsubouchi Hidetsugu
公开号:US20080119478A1
公开(公告)日:2008-05-22
The present invention provides a 2,3-dihydro-6-nitroimidazo[2,1-b]oxazole compound represented by the following general formula: (1) in the above formula (1), R1 represents a hydrogen atom or C1-C6 alkyl group, n represents an integer of 0 to 6, R1 and —(CH2)
n
R2 may form a spiro ring represented by the formula (30) below, together with the adjacent carbon atom (in the formula below, RRR represents a piperidyl group which may have substituents on the piperidine ring), (30) and R2 represents a benzothiazolyloxy group, quinolyloxy group, pyridyloxy group or the like. The present compound has an excellent bactericidal action against
Mycobacterium tuberculosis
, multi-drug-resistant
Mycobacterium tuberculosis
, and atypical acid-fast bacteria.