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In the reduction of 4--tert-butylcyclohexanone using sodium borohydride, what are the products? What is the product...

In the reduction of 4--tert-butylcyclohexanone using sodium borohydride, what are the products? What is the product ratio of these products, and explain mechanistically why this product ratio occurs. Finally, how can you use a NMR spectra to determine the product ratio?

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