Domino reaction involving the Bestmann–Ohira reagent and α,β-unsaturated aldehydes: efficient synthesis of functionalized pyrazoles
作者:Shakir Ahamad、Ashis Kumar Gupta、Ruchir Kant、Kishor Mohanan
DOI:10.1039/c4ob02365j
日期:——
domino reaction involving the Bestmann–Ohira reagent (BOR) and α,β-unsaturated aldehydes has been developed for the synthesis of densely functionalized vinylpyrazoles. This reaction demonstrates the dual reactivity of BOR as a homologation reagent as well as a cycloaddition partner, thus constituting a domino reaction in an operationally simple procedure. The application of this efficient synthesis of
已经开发出一种温和,有效和快速的多米诺骨牌反应,涉及Bestmann-Ohira试剂(BOR)和α,β-不饱和醛,用于合成高密度官能化的乙烯基吡唑。该反应证明了BOR作为同源试剂以及环加成伴侣的双重反应性,因此在操作简单的程序中构成了多米诺反应。已经证明了该吡唑的有效合成的应用在吡咯并吡唑生物碱的膦酰基类似物的合成中。