Question

2. The Dieckman condensation reaction of ETO (CH)CH(CH)COOEt yields only one of the two possible cyclic beta-ketoesters. Draw structures of both possible products and explain why only one of them is formed. Product A Product B A The only product formed is (circle) Explain: Part 2: Michael addition 22.94 Identify the Michael door via a Michael addition Michael Michael Donor pare each of the following compounds Michael Acceptor
#2

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Answer 1

Answer :

The Dieckmann cyclization is an intramolecular version of the Claisen condensation.

The reaction gives a cyclic compound and cyclization works best with 1,6 and 1,7-diesters.

The reaction involves a diester as starting material and a strong base like sodium Ethoxide or methoxide in Methanol as solvent. The final product of the reaction is a cyclic beta- ketoester.

The products of the question along with the mechanism + explanation is provided below.

(0) to, c (см.) и (си) egct 10, с (см.) Pack охолии Condensation Nadcho на и сі, он 2 , со то 7 A boys (Nлос») mewoo (Снон) go ROEF со тоа | + 4 Hz | bet Mechanisme до х . е, а слова, 0 1 EGOH
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