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Solutions for Condensations and Alpha Substitutions of Carbonyl Compounds 64(b) continued from previous page O O H H H C O H – H2O O H2O OMe O H OMe O H H C OMe O H OMe OMe O OMe OO OMe OMe OO O OMe O H H C O OMe O H O OMe O H OMe O OMe O H O O – MeO (This product will be deprotonated by methoxide but regenerated upon acidic workup.) (d) mechanism of Claisen condensation in problem 63(b) (c) mechanism of Claisen condensation in problem 63(a) – MeO (This product will be deprotonated by methoxide but regenerated upon acidic workup.) 581