1.

Which of the following esters on reaction with excess Grigrand reagent give a tertiary alcohol, which on heating give an alkene which exhibits geometrical isomerism

Answer»

`CH_3CH_2 COOC_2 H_5+CH_3 MGBR`
`HCOOC_2H_5 +CH_3CH_2MgBr`
`CH_3 COOC_2H_5 +CH_3 CH_2 MgBr `
`HCOOC_2 H_5 +CH_3 MgBr`

Solution :`CH_3-CH_2 - UNDERSET(CH_3) underset(|)overset(OH) overset(|)C-CH_3 ` NoGeometricalisomerism
`(b )Hunderset(CH_3) underset(|) underset(CH_2) underset(|) overset(OH) overset(|)C-CH_2 CH_3tounderset("Exhibit isomerism")(CH_3 -CH_2 -CH =CH -CH_3)`
` (C )CH_3 - underset( CH_3)underset(|) underset(CH_2) underset(|) overset(OH) overset(|) C-CH_2 -CH_3tounderset("Exhibitsgeometricalisomerism ") (CH_3-CH= underset(CH_3) underset(|) C-CH_2 -CH_3)`


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