Four seemingly simple transformations related to the chemistry of methane will be addressed from mechanistic and conceptual points of view, i.e.: 1)
metal-mediated dehydrogenation to form metal-carbene complexes, 2) the
hydrogen-atom abstraction step in the oxidative dimerization of methane, 3)
the mechanisms of the CH4 -> CH3OH conversion, and 4) the initial bond
scission as well as the rate-limiting step in the selective CH3OH -> CH2O
oxidation.