Ketones react with alcohols to yield products called acetals. Why does the allcis isomer of 4-tert-butyl-l, 3-cyclohexanediol react readily with acetone and an acid catalyst to form an acetal while other stercoisomers do not react? In formulating your answer, draw the more stable chair conformations of all four stereoisomers and the product acetal. Use molecular models for help.

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H CICH3)3 н CICH)3 но H3C CH3 Acid catalyst H20 H3C- Нас но An acetal