In a similar experiment, unlabeled 4-butanolide was allowed to stand in an acidic solution in which the

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In a similar experiment, unlabeled 4-butanolide was allowed to stand in an acidic solution in which the water had been labeled with 18O. When the lactone was extracted from the solution after 4 days, it was found to contain 18O. Which oxygen of the lactone do you think became isotopically labeled?
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Organic Chemistry

ISBN: 978-0072905014

4th edition

Authors: Francis A. Carey

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