Abstract

The reactions of alkyl 3-nitroacrylates with certain heterocyclic CH acids such as 1,3-dimethylpyrimidine-2,4,6(1Н,3Н,5Н)-trione, 5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, 4-hydroxy-6-methyl-2H-pyran-2-one, and 4-hydroxy-2H-chromen-2-one occur in the presence of the Rodionov catalyst to form the Michael adducts. The products structure has been confirmed by ¹H, ¹³C{¹H}, and ¹Н-¹⁵N HMBC NMR as well as IR spectroscopy methods.

中文翻译：

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3-硝基丙烯酸烷基酯与杂环CH酸的反应

摘要

3-硝基丙烯酸烷基酯与某些杂环CH酸的反应，例如1,3-二甲基嘧啶-2,4,6（1Н，3Н，5Н）-三酮，5-甲基-2-苯基-2,4-二氢-3 H-吡唑-3-酮，4-羟基-6-甲基-2 H-吡喃-2-酮和4-羟基-2 H-铬-2--2-酮在Rodionov催化剂存在下发生形成迈克尔加合物。产品结构已经通过确认¹ H，¹³ C {1 ^1个H}，和¹ Н- ¹⁵ ÑHMBC NMR以及IR光谱方法。