Recent Advances in the Platinum-mediated CH Bond Functionalization

Abstract

Platinum complexes have played an important role in our understanding the mechanisms of arene and alkane CH activation and developing catalytic methods for hydrocarbon CH functionalization. Knowledge of the factors controlling the reactivity of the metal center acquired over the past few years enabled significant progress in the field. Among the most challenging problems which have to be solved yet are i) the use of more readily available oxidants, ideally, oxygen from the air; ii) selective functionalization of CH bonds, iii) protection of the oxygenation products against overoxidation and iv) designing more water-tolerant systems. The most recent examples of platinum mediated catalytic functionalization of alkane and arene CH bonds in water and non-polar solvents, mechanistic studies of alkane and arene CH activation, computational and experimental design of new efficient platinum complexes are reported. The review covers mostly publications appeared in 2005-2006.

Multiple‐Metal (De‐)Hydrogenation‐Catalysed Processes

“…The activation of inert C-H bonds by transition-metal complexes is a major area of interest in organometallic chemistry. [25][26][27][28][29][30][31] The use of metal complexes for C-H activation is particularly interesting for the conversion of lighter alkanes into added-value alkane products, normally in the form of liquid fuels. [32] The combination of lighter alkanes to afford C9 -C19 n-alkanes is an example of the importance of C-H activation and represents a big challenge in the field of energy production.…”

“…The activation of inert C–H bonds by transition‐metal complexes is a major area of interest in organometallic chemistry . The use of metal complexes for C–H activation is particularly interesting for the conversion of lighter alkanes into added‐value alkane products, normally in the form of liquid fuels .…”

Catalysts for C–H functionalization: Platinum, gold and even nanodiamonds

“…While this important and interesting field, namely, activation of -bonds of saturated hydrocarbons by transition metal complexes, had been developed, a number of new systems was proposed including platinum complexes able to activate -bonds [39,40].…”

Transition Metal‐Catalyzed Synthesis of Fused Five‐Membered Aromatic Heterocycles

“…Finally, F€ urstner provided a single example of the Pt(II)-catalyzed [307] annulation of the same substrate 365 into the fused indolizine derivative 372, proceeding through a facile cyclization of Pt-vinylidene 371 (Scheme 9.130) [308,309] Scheme 9.132) of these aza-analogs of oxacarbenoids resemble those suggested for the formation of furan products in the Rh(II)-catalyzed [3 þ 2] cycloaddition reaction between a-diazocarbonyl compounds and alkynes (See Scheme 8.71 in the previous chapter).…”