Reactions of the type RH → ROH rarely yield homogeneous products. However, substituted perbenzoic acids transform the cyclic “paraffins” cis‐and trans‐1 to 3, X = H, regio‐ and stereospecifically into the corresponding compounds with X = OH. Acyclic alkanes are likewise oxidizable. (Figure Presented.) Copyright © 1979 by Verlag Chemie, GmbH, Germany