Disclosed is a method for preparing a compound of Formula (1) wherein R1 is H or C1-C3 alkyl, and the use of a compound of Formula (1) in a method for preparing mesoionic compounds, comprising: (A) contacting a compound of Formula (2) with 2-aminopyridine (3) in the presence of an inert solvent, optionally in the presence of an acid catalyst, to form a compound of Formula (4) (Β) contacting the compound of Formula (4) with an alcohol R2OH to form a compound of Formula (5) in the presence of an inert solvent wherein R2 is C1-C4 alkyl; and (C) contacting the compound of Formula (5) with a borohydride reducing agent in the presence of an inert solvent to form a reaction mixture comprising the compound of Formula (1).
揭示了一种制备化合物的方法,该化合物的
化学式为(1),其中R1为H或C1-C3烷基,并且使用化合物的方法的
化学式(1)来制备中间离子化合物,包括:(A)在惰性溶剂的存在下,可选地在酸催化剂的存在下,将
化学式(2)的化合物与2-
氨基吡啶(3)接触,形成
化学式(4)的化合物;(B)在惰性溶剂的存在下,将
化学式(4)的化合物与醇R2OH接触,形成
化学式(5)的化合物,其中R2为C1-C4烷基;以及(C)在惰性溶剂的存在下,将
化学式(5)的化合物与
硼氢化物还原剂接触,形成包含
化学式(1)的反应混合物。