Four carbocations are shown, which can possibly rearrange via hydride shift to a more stable carbocation. Compound A consists of two fused cyclohexane rings where a carbocation is on one of the fused carbons. Compound B consists of a linear pentane chain with a carbocation on carbon 2. Compound C consists of a linear pentane chain where carbon 3 is bonded to a CH 2 plus. Compound D consists of a cyclohexene where the carbocation is on carbon 1 and an alkene on carbons 3 and 4. Select the carbocation(s) that will rearrange via hydride shift. OC OD

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Designing a Synthesis

Organic synthesis is a branch of chemical synthesis that involves the planned construction of organic compounds/molecules from smaller units that possess functional groups. Friedrich Wöhler was the first scientist who designed the synthesis of an organic compound, urea from inorganic starting materials silver cyanate with ammonium chloride via a simple, one-step synthesis.