By T. Brent Gunnoe (auth.), Pedro J. Pérez (eds.)
Over the previous decade, a lot learn attempt has been dedicated to the layout and synthesis of recent reagents and catalysts that may impression carbon-hydrogen bond activation, in most cases end result of the prospect that C−H activation may perhaps allow the conversion of inexpensive and plentiful alkanes into important functionalized natural compounds.
Alkane C-H Activation via Single-Site steel Catalysis offers the present cutting-edge improvement within the catalytic structures for the catalytic trans-formations of alkanes less than homogeneous stipulations. bankruptcy 1 deals a entire precis of the most discoveries learned to date. bankruptcy 2 stories the so-called electrophilic activation, initiated by means of Shulpín within the overdue 60s, and the bottom for the Catalytica approach. bankruptcy three examines the catalytic borylation of alkanes, stumbled on by way of Hartwig, while bankruptcy four offers an up-to-date imaginative and prescient of the alkane dehydrogenation response. bankruptcy five covers the oxygenation of C-H bonds, a box of large curiosity with bioinorganic im-plications, and eventually bankruptcy 6 provides the functionalization of alkane C-H bonds by means of carbene or nitrene insertion.
The background of C-H bond activation, and the present learn defined during this publication, spotlight the present learn and current the reader with an outlook of this box which is still explored by means of an more and more visionary and enthusiastic staff of natural, organometallic, organic and actual chemists.
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Additional info for Alkane C-H Activation by Single-Site Metal Catalysis
Several other substrates, including methanesulfonic acid (which is somewhat less reactive, probably reflecting the effect of the fairly strong electron-withdrawing substituent), propanesulfonic acid, ethylphosphonic acid, and propionic acid, could be similarly oxidized to hydroxy compounds . 17). Recently a Pt/Fe(III)/O2 combination (discovered using a microfluidic screening device) showed some success for selective methane oxidation, giving up to 50 turnovers of a mixture of methanol and formic acid .
5 . 17:1 was deduced . However, that result is complicated by the tendency of platinum metal to precipitate from Shilov reactions, especially when carried out in pure water. 4 Proposed three-step Shilov oxidation sequence for the oxidation of methane to methanol/methyl chloride variety of oxidants, including [PtCl6]2- , so that if colloidal (and hence not visible) Pt were present during this experiment (and, likewise, in any of those discussed above), the apparent reactivity of methanol would be artificially high.
11 Schematic representation of the inner-sphere mechanism for Pt(II)-Pt(IV) redox reactions be able to compete under Shilov oxidation conditions. It is not at all obvious why it should be so fast. 11; the requirement for an additional X- ligand in the symmetric bridged transition state is responsible for the commonly observed third-order kinetics . Such a mechanism has been demonstrated for N-ligated complexes of the sort used for the model studies described in the previous section [38–40].
Alkane C-H Activation by Single-Site Metal Catalysis by T. Brent Gunnoe (auth.), Pedro J. Pérez (eds.)