Research on pyranes, their analogs, and related compounds
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By the reaction of 2- acylaminochromones with formaldehyde and secondary amines, we have synthesized 2-acylamino-3-dialkylamino-methylchromones. On the basis of their chemical properties and their UV, IR, and NMR spectra, a hypothesis concerning the fine structure of these compounds has been put forward. When the reaction with formaldehyde is carried out in the presence of bases, 3, 3'-methylenebis-(2-acylaminochromone)s can be obtained.
KeywordsFormaldehyde Organic Chemistry Chemical Property Pyranes Fine Structure
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