Generation of the 7-Azabicyclo[4.3.1]decane Ring System via (4 + 3) Cycloaddition of Oxidopyridinium Ions
作者:Chencheng Fu、Steven P. Kelley、Jianzhuo Tu、Michael Harmata
DOI:10.1021/acs.joc.1c00032
日期:2021.5.21
Oxidopyridinium ions bearing an ester group at the 5-position undergo (4 + 3) cycloaddition reaction to afford congeners of 7-azabicyclo[4.3.1]decane. The reaction generally proceeds in high yield, although an excess of diene is often required to achieve such yields. The reaction is highly regioselective, but not endo/exo selective. It appears the cycloaddition process can be either kinetically or
1-Phenylthio-1,3-butadiene derivatives were prepared in good yield via 1,2-elimination reaction of acetoxy and phenylthio group by treating the corresponding 1-[bis(phenylthio)methyl] allyl acetate with dialkylcopper lithium.