1.

An optically active alkyl chloride having molecular formula 'A' (C_6H_13Cl)on dehydrohalogenation gave two isomeric alkenes B & C (C_6H_12) . Ozonolysis of B gave formaldehyde and D (C_5H_10O) , while ozonolysis of C gave acetone. Reduction A gave 2,2-dimethyl butane. The structure of 'D' is

Answer»

`CH_3 - undersetoverset(|)(CH_3)(C )H - CH_2CHO`

`CH_3 - undersetoverset(|)(CH_3)(C )H_2CH - CHO`
`CH_3 - oversetunderset(|)(CH_3)(C )H - COCH_3`

Solution :
B & C doesn.t exhibits GEOMETRICAL ISOMERISM as has `a_2C = Cbd`type and c is `a_2C = Ca_2` type


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