ChemInform Abstract: ORGANOIRON COMPLEXES IN ORGANIC SYNTHESIS. PART 8. AN APPROACH TO REGIO‐ AND STEREO‐CONTROLLED SYNTHESIS OF 5,6‐DISUBSTITUTED CYCLOHEXADIENE DERIVATIVES VIA TRICARBONYL(1‐5‐η‐6‐EXO‐(2‐ACETOXYPROPYL)CYCLOHEXADIENYLIUM)IRON TETRAFLUOROBORATE