Tag : Butadiene Sulfone

DIELS-ALDER SYNTHESIS OF CYCLOHEX-4-ENE-1,2-CIS-DICARBOXYLIC ANHYDRIDE FROM BUTADIENE SULFONE AND MALEIC ANHYDRIDE

Written by Lauren ABSTRACT: New carbon-carbon bonds can be formed from a conjugated diene system heated with a dienophile (alkene or alkyne). It is a concerted cycloaddition reaction between the π-electrons of butadiene sulfone and maleic anhydride to form cyclohex-4-ene-1,2-cis-dicarboxylic anhydride. The product doesn’t need to be recrystallized and its purity is confirmed by a melting point test and 1H NMR analysis. INTRODUCTION: The synthesis of new carbon-carbon bonds between butadiene sulfone and maleic anhydride can be achieved through […]

Preparation of a Cyclic Compound, Cyclohex-4-ene-1,2-cis-dicarboxcylic Anhydride By Diels-Alder Reaction of Butadiene Sulfone with Maleic Anhydride

Written by Hannah Abstract Ring expansion can be achieved through a cyclo addition reaction of a dinophile and a conjugated diene in a concerted reaction where all electrons move at the same time. The experiment takes place in a single step and therefore contamination would stem from overuse of the non-limiting reagent. Cyclohex-4-ene-1,2-cis-dicarboxcylic anhydride was prepared by placing butadiene sulfone (2.0g, 0.0169moles), the diene, with maleic anhydride (1.2g, 0.0122moles), the dinophile, while dissolved in the solvent xylene (.80mL, 0.0075moles) […]