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Solutions for Condensations and Alpha Substitutions of Carbonyl Compounds O C N H OO H H C NC O C H O O C N O COCH3 O O H OO H O C N COCH3 OO C CC COCH3 O N HH HH COCH3 O O C H CN COCH3 O C COCH3 OO CC COCH3 O N H CC COCH3 O N H H CN COCH3 O C (e) same enolate as in (b) (d) (c) (f) O O H O O OO H H C H O O O O OO H H O O (b) (a) 60 The most acidic hydrogens are shown in boldface. (See Appendix 2 in this manual for a review of acidity.) Because of the stereochemistry of the double bond, the H atoms on the left side of the ring are not identical to those on the right side. However, the two enolates will be equivalent except for the double bond geometry. H O O 577