Novel Synthesis of Acylaminomethylene Meldrum's Acids and Their Thermolysis to 4-Methylthio-and 4-Amino-2-aryl-6H-1,3-oxazin-6-ones

Xian Huang Department of Chemistry, Hangzhou University, 310028, Hangzhou, People's Republic of China

Bang-Chi Chen Department of Chemistry, Hangzhou University, 310028, Hangzhou, People's Republic of China

Guo-Yong Wu Department of Chemistry, Hangzhou University, 310028, Hangzhou, People's Republic of China

Hong-Bo Chen Department of Chemistry, Hangzhou University, 310028, Hangzhou, People's Republic of China

Abstract

Bismethylthiomethylene Meldrum's acid reacts with amides in the presence of potassium hydroxide to afford methylthioacylaminomethylene Meldrum's acid 5. Aminolysis of 5 gives aminoacylaminomethylene Meldrum's acids 7. Thermolysis of 5 and 7 supplies a novel synthetic method of 4-methylthio- and 4-amino-2-aryl-6H-1,3-oxazin-6-ones.

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Novel Synthesis of Acylaminomethylene Meldrum's Acids and Their Thermolysis to 4-Methylthio-and 4-Amino-2-aryl-6H-1,3-oxazin-6-ones

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Novel Synthesis of Acylaminomethylene Meldrum's Acids and Their Thermolysis to 4-Methylthio-and 4-Amino-2-aryl-6H-1,3-oxazin-6-ones

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