Question

What is the major organic product obtained from the following reaction? 1. NaOCH2CH3 | CH3CH2OH 3. HO* ا OCCO duo

Answer 1

0 By I.NaD CH2CH3|(13420H, @ base Na O CH2 CH3 will abstract the most acidic proton As we know the proton blw two carbonyl group is highly we audic, the base will abstract that proton. & enolate formation will was take place laik 0-9Hs This enolate ion will undergo 1,4-addition gin with B unsaturated carbonyl og compound: 05 in the presence of bose enolate ion will forn terase DH 0GHr ) Now cyclization will lead the formation of 6 membered ring zation) O'

© finally dehydration will yiled final product. O Calways B uhsaturated carbonyl compounds are more stable) 8 OH H - first step is same as previous one. 02 LOGM5 @ si H. GO i echir DOGH5 Hoy on 8 hoghs HS60 © Now base NQOH (OHC) will attack at both carbonylils carbond. & formation of dicarboxylic aud derivation will form 02 DOH aicina 06H5 --> MSGOJ I G LOGHS HO As or 1 Removal of OCH 40 O

By heating the compound, cos gas will evolve f we get final desired product OTH Ho co – 10 HOA Finally keto-enol 1 tcustomerization 11 Ho