There is described a method for synthesizing 3-nitro-1,2-cyclopentanedione salts which are substituted in the 4-position with an alkyl substituent and in the 5-position with an electron withdrawing substituent. The method comprises the addition and spontaneous cyclization reaction of a nitro olefin with a pyruvate anion. The salts can be converted to the nitro diones or used as intermediates in the preparation of amino reductones.
描述了一种合成4-位取代烷基和5-位带有电子吸引基团的
3-硝基-
1,2-环戊二酮盐的方法。该方法包括将硝基烯烃与
丙酮酸根离子加成和自发环化反应。这些盐可以转化为硝基二酮或用作
氨基还原酮的制备中间体。