2-Oxo-1-propylcyclohexaneacetic acid → 2-(3,3-Diphenylallyl)-2-propylcyclohexanone

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Again in the same manner but replacing 6-methyl-1,4-dioxospiro[4.5]decane-6-propionic acid methyl ester with an equivalent amount of 6-propyl-1,4-dioxospiro[4.5]decane-6-propionic acid methyl ester, described in Example 7, 2-oxo-1-propylcyclohexaneacetic acid, νmaxCHCl3 1775, 1710 cm-1, is obtained via the respective intermediates, α,α-diphenyl-6-propyl-1,6-dioxaspiro[4.5]decane-6-propanol, νmaxCHCl3 3620, 3480, 1175, 1130, 1110, 1062 cm-1 , and 2-(3,3-diphenylallyl)-2-propylcyclohexanone, nmr (CDCl3) δ 0.85 (m, 3H), 6.0 (t, 1H), 7.3 (m, 10H).

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