In this context, "vinylogous" refers to a situation where the reaction involves the addition of an enolate to a compound that contains a vinyl group (a group with a carbon-carbon double bond), usually at a position that's one carbon away from the carbonyl group.
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(R)-3-bromo-5-((R)-hydroxy(phenyl)methyl)furan-2(5H)-one
Benzene, 1-[(2,3-dibromopropyl)sulfonyl]-4-methyl-
Benzenesulfonamide, 4-methyl-N-(1-naphthalenylmethylene)-
1,1-bis<4-(N-oxy-tert-butylamino)phenyl>-2-methyl-1-propene
benzyl ((E)-2-((2S,4R)-6-methoxy-2-(naphthalen-2-yl)-1,2,3,4-tetrahydroquinolin-4-yl)vinyl)carbamate
(R)-3-(4-methoxyphenyl)-N,N-dimethyl-3-((S)-2-methyl-5-oxo-2,5-dihydrofuran-2-yl)propanamide
1-benzyl-3-(phenylimino)-1,3-dihydro-2H-indol-2-one
