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Versatile reactivity of a rhodium(i) boryl complex towards ketones and imines

Dalton Transactions, ISSN: 1477-9234, Vol: 43, Issue: 18, Page: 6786-6801
2014
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Article Description

The rhodium(i) boryl complex [Rh(Bpin)(PEt)] (1) reacts with the ketones α,α,α-trifluoroacetophenone and 9-fluorenone by insertion of the CO bond to give [Rh{η-C(CF )(OBpin)CH}(PEt)] (4) and [Rh{η-CH(OBpin)}(PEt )] (6), whereas the reaction with acetophenone leads to the formation of [Rh(H)(PEt)] (2), [Rh(OBpin)(PEt )] (3) and (E)-(Ph)CHCHBpin. Treatment of 1 with ketimines generates [Rh{η-CHC(Ph)N(Ph) (Bpin)}(PEt)] (7), [Rh{(η-C H)N(Ph)(Bpin)}(PEt)] (8) or [Rh{CPhN(H)(Bpin)}(PEt)] (9). The insertion of aldimines into the Rh-B bond gives access to [Rh[η- CH{N(CH)Bpin}CH](PEt )] (11) or [Rh[η-CH{N(Ph)Bpin}C H](PEt)] (12). The latter is converted into the C-H activation product [Rh{(CH )-o-N(Bpin)(CHPh)}(PEt)] (13). Complex 13 reacts with Bpin to yield the boryl complex 1 and the amine PhCHN(Bpin)(CH-o-Bpin). This journal is © the Partner Organisations 2014.

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