Optimized scale up of 3-pyrimidinylpyrazolo[1,5-a]pyridine via Suzuki coupling; a general method of accessing a range of 3-(hetero)arylpyrazolo[1,5-a]pyridines
作者:Paul A. Bethel、Andrew D. Campbell、Frederick W. Goldberg、Paul D. Kemmitt、Gillian M. Lamont、Abid Suleman
DOI:10.1016/j.tet.2012.04.094
日期:2012.7
an improved synthesis of 3-(hetero)aryl pyrazolo[1,5-a]pyridines (such as 3-(2,5-dichloropyrimidin-4-yl)pyrazolo[1,5-a]pyridine (8)) via an optimized synthesis and Suzuki coupling of 3-pyrazolo[1,5-a]pyridine boronic ester 10. These conditions are applicable to both high throughput chemistry and large scale synthesis of these medicinally important compounds. The scope of this chemistry has been further
我们已经开发出3-(杂)芳基吡唑并[1,5- a ]吡啶(例如3-(2,5-二氯嘧啶-4-基)吡唑并[1,5- a ]吡啶(8)的合成方法。)通过优化的合成方法和3-pyrazolo [1,5- a ]吡啶硼酸酯10的Suzuki偶联。这些条件适用于这些医学上重要的化合物的高通量化学和大规模合成。该化学反应的范围已进一步扩展到包括新型硼酸酯3-(4,4,5,5-四甲基-1,3,2-二氧杂硼硼烷-2-基)-6,7的合成和偶联-二氢-5 H-吡唑并[5,1- b ] [1,3]恶嗪(43)。