1,3-Dipolar cycloadditions of cyclic nitrones to γ-bromo α,β-unsaturated esters and lactones

✍ Scribed by Pedro de March; Marta Figueredo; Josep Font; Antonio Salgado

• Publisher: Elsevier Science
• Year: 1998
• Tongue: French
• Weight: 630 KB
• Volume: 54
• Category: Article
• ISSN: 0040-4020
• DOI: 10.1016/s0040-4020(98)00376-7

✦ Synopsis

The 1,3-dipolar cycloaddition of cyclic nitrones to several "t-bromo ct,~unsaturated esters and lactones has been studied. All the reactions have shown high stereoselectivity, with a predominance of the endo or exo transition state for the trans or cis dipolarophiles, respectively.