High nitrogen chemistry: Synthesis and properties of N,N-bis(4,5-dicyano-1-methyl-2-imidazolyl)cyanamide and N,N,N′,N′,N″,N″-hexakis(4,5-dicyano-1-methyl-2-imidazoly)melamine
作者:Ramachandran P Subrayan、Paul G Rasmussen
DOI:10.1016/s0040-4020(98)01058-8
日期:1999.1
midazoly)amine(1) using cyanogen chloride gave N,N-bis(4,5-dicyano-1-methyl-2-imidazolyl)cyanamide(3) as a light yellow solid. Compound 3 is thermally labile and upon heating the NCN bond is cleaved and the reactive amine intermediate readily reacts with the moisture giving 1. Nucleophilic aromatic substitution(SNAr) reaction of the sodium salt of 1 with cyanuric chloride gave N,N,N′,N′,N″,N″-hexakis(4
用氯化氰氰化双(4,5-二氰基-1-甲基-2-咪唑基)胺(1),得到N,N-双(4,5-二氰基-1-甲基-2-咪唑基)氰酰胺(3)为浅黄色固体。化合物3是热不稳定的,并且在加热时,N = CN键断裂并且反应性胺中间体容易与水分反应得到1。1的钠盐与氰尿酰氯的亲核芳族取代(S N Ar)反应得到N,N,N',N',N'',N''-己基(4,5-二氰基-1-甲基-2-咪唑基三聚氰胺(5),为白色微晶固体。化合物5在氮气和空气中最高300°C时具有热稳定性。化合物5在乙腈中的476 nm和DMF中的448 nm处显示出较强的发射带。因此,可以将5用作荧光探针。