Intermediate Compound #1
Multiple steps have been combined to give us our first intermediate compound
(16-Dehydropregnenolone acetate, shown here). Note how the red groups have
changed. The next steps include oxidation reactions, which add oxygen to the
compound. In this case, the chemist uses chromium trioxide (CrO3)
and then heats the mixture, which breaks bonds and allows the oxygen to
recombine with the steroid.