Reaction of RuO4 with Carbon‐Carbon Double Bonds. Part 6. Reaction of Small‐Size Cycloalkane Rings with RuO4. Oxidative Scission of Ethyl 2, 2‐Dimethoxycyclopropane‐1‐carboxylates and Methyl 2,2,6,6‐ Tetramethoxybicyclo(2.2.0)hexane‐1‐carboxylates.