QuestionCarbonyl chemistry / E1cB ring opening
The major product formed in the following reaction sequence is
- (a) (2E,4E)-6-methoxy-6-oxohexa-2,4-dienoic acid (both C=C trans)
- (b) (2E,4Z)-6-methoxy-6-oxohexa-2,4-dienoic acid (C=C next to COOH trans, next to CO₂Me cis)
- (c) (2Z,4E)-6-methoxy-6-oxohexa-2,4-dienoic acid (C=C next to COOH cis, next to CO₂Me trans)
- (d) (2Z,4Z)-6-methoxy-6-oxohexa-2,4-dienoic acid (both C=C cis)
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