Fruity peony perfume, synthesis

Although any of the lhree routes to the fruity peony perfume would give an acceptable synthesis, the key factor in choosing route (c) was the ease of synthesis of the starting materials from available compounds. But how can you know which materials will be available So far in this chapter we have avoided this question, and often our retrosynthetic analyses have been incomplete because the suggested starting materials must themselves be synthesized in the laboratory. From now on, though,... 

---