Mass of maleic anhydride used: 5.1296 gram Volume of furan used: 3.25 ml Volume of THF used: approx. 16ml The reaction mixture was allowed to stand undisturbed for one week, whereupon, gem-like, colorless to white, prismatic crystals were isolated from the solvent matrix and allowed to air dry. When dry, the mass of the crystals was determined to be: 4.6732 gram. One small
Mass of maleic anhydride used: 5.1296 gram
Volume of furan used: 3.25 ml
Volume of THF used: approx. 16ml
The reaction mixture was allowed to stand undisturbed for one week, whereupon, gem-like, colorless to white, prismatic crystals were isolated from the solvent matrix and allowed to air dry. When dry, the mass of the crystals was determined to be: 4.6732 gram. One small crystal was selected and ground to a fine powder for melting point measurement. The powder was observed to melt at 117 – 118 deg C. About 1ml of a saturated solution of product dissolved in DMSO-d6 was prepared and placed in an NMR tube. Subsequently, proton, carbon-13 and DEPT NMR spectra were acquired.
Analysis
- Write the reaction using structural formulas.
- Calculate percent yield (show work)
- What does the measured melting point suggest?
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