(cyanomethylene)tributylphosphorane (CMBP, Tsunoda reagent) was demonstrated on two occasions in a drug discovery context. Firstly, the high reactivity of the phosphorane allowed the alkylation of a weakly acidic pyrazole when standard Mitsunobu conditions were unsuccessful. Secondly, the clean reaction profile generally obtained using CMBP allowed the direct use of the crude mixture in a subsequent Suzuki cross coupling
在药物发现的背景下,有两种情况证明了未充分利用的(
氰基亚甲基)三丁基
磷烷(CMBP,Tsunoda试剂)的多功能性。首先,当标准的Mitsunobu条件不成功时,phosphor烷的高反应活性可使弱酸性
吡唑发生烷基化。其次,通常使用CMBP获得的干净的反应曲线允许在随后的Suzuki交叉偶联中直接使用粗混合物。当不希望分离Mitsunobu反应产物(例如含有
硼酸酯)时,该试剂具有实用性。