1.

A conjugated alkadiene having molecular formula C_(13)H_(22), on ozonolysis, yielded ethyl methylketone and cyclohexanecarbaldehyde. The IUPAC name of the diene is

Answer»

1-cyclohexyl-2-methylhexa-1,3-diene
1-cyclohexyl-4-methylhexa-1,3-diene
1-cyclohexyl-1-methylhexa-1,4-diene
1-cyclohexyl-3-methylhexa-1,4-diene

Solution :The STRUCTURES of the products of ozonolysis are

Since the number of carbon atoms of the two products is 11(4+7), therefore, the ozonolysis must have ALSO produced another two carbon ATOM product. Further, since the given compound `(C_(13) H_(22))` cis an alkadiene, this two carbon compound must be glyoxal. OHCCHO. Replace the oxygen atoms from these THREE products by double bonds, the structure of alkadiene is


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