When Camphor Undergoes Nucleophilic Attack by CH₃CH₂MgBr, the Major Product

question 99

Essay

When camphor undergoes nucleophilic attack by CH₃CH₂MgBr, the major product is the one in which the Grignard reagent has added endo. Explain the stereoselectivity observed. Which face of the carbonyl carbon, re or si, was attacked?

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