Ephedrine is a bronchodilator and decongestant obtained from the Chinese plant Ephedra sinica. A concentrated solution of

Question:

Ephedrine is a bronchodilator and decongestant obtained from the Chinese plant Ephedra sinica. A concentrated solution of ephedrine gives an IR spectrum with a broad signal between 3200 and 3600 cm^-1. An IR spectrum of a dilute solution of ephedrine is very similar to the IR spectrum of the concentrated solution. That is, the broad signal between 3200 and 3600 cm^-1is not transformed into narrow signals, as we might expect for a compound containing an OH group. Explain.

ОН н Ephedrine