This is a crucial step in the synthesis. CDC involves the direct functionalization of C-H bonds to form C-C bonds. In this case, the starting materials are a terminal allylic C(sp3) compound (usually an allylic alcohol or similar functional group) and styrene (C(sp2)). The iron catalyst plays a vital role by facilitating the activation of C-H bonds in the allylic position and in the styrene.
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