![]() In part I of this work, we showed that methylcyclopentadiene (MeCp) can generate a complex mixture of isomers during the Diels-Alder reaction with maleic anhydride, yielding two pairs of enantiomers 2 en and 3 en ( Figure 2), thus exposing the students to a more challenging spectral interpretation training. Diels-Alder adducts resulting from the reaction between cyclopentadiene and maleic anhydride However, at the undergraduate level, this reaction suffers from a lack of diversity, as too often this reaction generates only a single isomer, the endo isomer 1 en, due to the symmetry of the staring materials as well as the reaction conditions ( Figure 1).įigure 1. Introduction The Diels-Alder reaction between cyclopentadiene (Cp) and maleic anhydride (MA) is well described in laboratory manuals and textbooks at the undergraduate level and represents a simple and effective teaching tool in organic chemistry.
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