A systematic study of the cross-coupling capability of the 4- and 5-positions of 2-phenylthiazoles and -oxazoles under Stille conditions is presented. The azoles were both applied as stannanes and as the halide component. The obtained results were compared regarding the position of the halide and Bu3Sn group. In order to establish a general reactivity platform for those heterocyclic systems, a broad variety of aromatic and heteroaromatic halides were coupled and some significant differences concerning the coupling properties of the investigated systems were observed.
本文系统研究了在Stille条件下
2-苯基噻唑和-
噁唑的4位和5位的交叉偶联能力。
噁唑既可用作
锡烷,也可用作卤化物成分。将所得结果与卤化物和Bu3Sn基团的位置进行了比较。为了建立这些杂环系统的通用反应平台,对多种芳香和杂芳卤化物进行了偶联,并观察到所研究系统的偶联性质存在一些显著差异。