Question

Predict the structure of the major product for the following reaction.

Chicorice CH3CH2CCI Zn (Hg) C. HCT AICI: NH2 II IV

Answer 1

It is based on the concept of reaction mechanism.It can be done as follows:

Product of the given reaction be drawn as : f can Cris Crecce ZnCHg) CHU Ala3 (product)

two name reaction and Gillen reaction is based firstly friedal Craft Acylation and then clemensen Reduction. In first step, Aillz act as catalyst substitution of Auge group then reduction of Carbonyl grups form product Mechanism :- CH3 CH2 C-C1:+ Alcla CH3 CH2 G, Ice- Alus OCC425 OCCURS 10 V- Alchy iesce CH₂CH2-C CH₃CH2C=0 (Stable Acyl cation) (Resonance stabilised) + Chig- eng=0 C-chaltz 난 CI-AI-O a ! ZnCHg) Conc.ro (reduction) "CH₂CH3 + All! + HU (poodust) (101) Znfig) I conc. Hel Conalexts -C- -a - group to - P

Mechanism four reduction step is given as: - Zn 2+ Zn at ze or COT 12 10 OH 28 -> o Conc. Ho e- coneri Ht cer DOH2 Zn 2220 - H2O cone.HU H n ( product) (E) (major product) TI), is correct major product. 117. option is correct.
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