Carbamoyl pincer derivatives

Scheme 2.13). Surprisingly, complex (22) does not lead to the formation of either the carbamoyl pincer derivatives or free dimethylformamide as it has been observed before for similar compounds (see Scheme 2.7). 

As is the case for pincer nickel complexes, their palladium and platinum counterparts exhibit very similar reactivity. Hence, similar carbamoyl (10) and alkoxycarbonyl (11) products were obtained by Sacco and coworkers in 1985 [7] (Scheme 2.7), when the Pd(II) (8) and Pt(II) (9) (PNP) pincer derivatives reacted under similar conditions as their Ni analogues (see Schemes 2.5 and 2.6). 

Aiming at studying the reactivity of ammonia with Ir(III) PCP pincer complexes, Goldman and Hartwig reported [37] the synthesis of the anilide hydride complex (91) addition of carbon monoxide to this species produces neither carbamoyl derivative nor free formamide, but gives CO adduct (92) that is unstable at room temperature and undergoes reductive elimination to give the known carbonyl (PCP) Ir(I) compound (85) (Scheme 2.42). 

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See also in sourсe #XX -- [ ]

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