21. A three-step oxidation of amorpha-4, 11-diene gives the resulting artemisinic acid. 22. The same substrates that undergo RCM can undergo acyclic diene metathesis, with ADMET favored at high concentrations. 23. In the compound on the left, the base value is 214 nm ( a heteroannular diene ). 24. Lehigh produces MRP from ethylene propylene diene monomer ( EPDM ), butyl, and natural rubber compounds. 25. The diene in this instance is notable as a rare example of a cyclic derivative of Danishefsky s diene. 26. The diene in this instance is notable as a rare example of a cyclic derivative of Danishefsky s diene . 27. In organic reactions [ 6 ] cyclophane tends to react as a diene derivative and not as an arene. 28. Because the diene is very electron-rich it is a very reactive reagent in Diels-Alder reactions. 29. Diels-Alder reactions occur between a conjugated diene and an alkene ( commonly known as the dienophile ). 30. Partially negative atoms on the diene will bond to partially positive atoms on the dienophile, and vice versa.
