143739-35-9

Upstream product

• 77-77-0 Divinyl sulfone 
• 143739-23-5 3-bromo-4-methyl-6-(N-phenylnitron-C-yl)-2-pyrone 
• 141402-08-6 3-bromo-6-bromomethyl-4-methyl-2-pyrone 
• 143739-26-8 Acetic acid 5-bromo-4-methyl-6-oxo-6H-pyran-2-ylmethyl ester 
• 143739-27-9 3-Bromo-6-hydroxymethyl-4-methyl-pyran-2-one 
• 143739-28-0 5-Bromo-4-methyl-6-oxo-6H-pyran-2-carbaldehyde 

Relevant academic research and scientific papers

Preparation of 6-(Nitron-C-yl)- and 6-(1,3-Butadienyl)-2-pyrones and Their Cycloaddition Reactions

6-(N-Substituted nitron-C-yl)-2-pyrones 1 and 6-(4-substituted 1,3-butadienyl)-2-pyrone 2 were prepared and their cycloaddition reactions with three kinds of diene systems were investigated.Namely, the reactions of 1 with methyl acrylate, vinyl crotonate and divinylsulfone took place at the nitrone moiety to afford 3-substituted isoxazolidines 9-14, and that of 2 with maleimide took place at the 2-pyrone moiety to give a bis-adduct 17 via elimination of carbon dioxide.