| abstract |
The invention relates to a novel thermo-isomerization method for the rapid and simple production of macrocyclic ketones of formula (Ia) or (Ib). While being in the gas phase at temperatures of greater than 500 °C, the macrocyclic ketones can be directly produced from alcohols of formulas (IIa) and (IIb) with high yields and in a rapid and simple manner. In formulas (Ia, Ib, IIa and IIb), R1 to R5 and n have the meanings as cited in the description. |