An Alternate Route to 2-Amino-3-nitro-5-bromo-4-picoline: Regioselective Pyridine Synthesis via 2-Nitramino-picoline Intermediate
作者:Apurba Bhattacharya、Vikram C. Purohit、Prashant Deshpande、Annie Pullockaran、John A. Grosso、John D. DiMarco、Jack Z. Gougoutas
DOI:10.1021/op700114d
日期:2007.9.1
2-nitramino functionality in 2-nitramino-4-picoline was successfully exploited not only as a protecting group but also as a directional handle to afford an efficient, atom-economic, and regioselective synthesis of 2-amino-5-bromo-3-nitro-4-picoline (4), a precursor for a drug candidate in development.
2-nitramino-4-picoline中的2-nitramino官能团不仅被成功地用作保护基,而且还被用作方向性手柄,以提供高效,原子经济和区域选择性的2-amino-5-bromo-3合成-nitro-4-picoline(4),正在研发中的候选药物的前体。