CHM 2211- Final Exam Guide - Comprehensive Notes for the exam ( 37 pages long!)
Document Summary
Aromatic ring c-h stretching at 3030 cm-1 and peaks 1450 to 1600 cm-1. Benzene carbon 13 nmr has a signal at 128 ppm. But if the carbon has two substituents: ortho three signals, meta four signals, para two signals. Diels-alder reactions: rules: the diene can react only when it adopts the s-cis conformation (very reactive). If not, it will not react (very unreactive): electron-withdrawing substituents in the dienophile increases the reaction rate, the stereochemistry of the dienophile is retained. If dienophile is cis, product is cis; either one cis (both in dashes) or the other cis conformation (both in wedges). If dienophile is trans, product is trans; we get two trans products. If we have a 1,3-diene and a ring for a dienophile, we get two fused rings: fused because the carbons are connecting the rings together, product is called fused bicyclic system.
