Following are structural formulas for furan and pyridine.
Chapter 21, Problem 21.14(choose chapter or problem)
Following are structural formulas for furan and pyridine. 1 5 2 34 Furan 1 2 3 6 5 4 Pyridine O N (a) Draw four contributing structures for furan that place a positive charge on oxygen and a negative charge fi rst on carbon 3 of the ring and then on each other carbon of the ring. (b) Draw three contributing structures for pyridine that place a negative charge on nitrogen and a positive charge fi rst on carbon 2, then on carbon 4, and fi nally carbon 6.
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