| abstract |
The present invention refers to a process for producing 5-[4-(2-hydroxy-2-methyl)-1-oxo-prop-1-yl]-3-[4-(2-hydroxy-2-methyl)‐1-oxo-prop-1-yl- phenyl]‐2,3‐dihydro‐1,1,3‐trimethyl‐ H‐indene (dimer isomer 5) that comprises the acylation of cumene in the 4‐position with an isobutyryl halide, followed by benzylic halogenation and dimerization (cyclization) of the resulting product. |