Studies on the reactivity of isocyanates and isothiocyanates with palladium-imidoyl complexes

Gareth R. Owen, Ramón Vilar*, Andrew J.P. White, David J. Williams

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

26 Dyfyniadau (Scopus)

Crynodeb

The reactions of palladium-iminoacyl complexes with isocyanates (RNCO) and isothiocyanates (RNCS) have been investigated. The reaction of Pd{C(Me)=NXy}(Cl)(P-P) (P-P = dppe, 1; dppp, 2) with RNCE (E = O, S) in the presence of AgBF4 yields the novel compounds {Pd{C(=CH2)N(Xy)C(=E)NHR}(dppe)][BF4] (E = O and R = Et, 3; Ph; 4; E = S and R = Me, 5; Ph, 6); the formation of these complexes results from an addition reaction followed by the migration of a proton from the methyl group in the imidoyl fragment to the nitrogen in the RNCE moiety. In contrast, the reaction between Pd{C(Ph)=NXy}(I)(dppe) and RNCO in the presence of AgBF4 yields the addition product [Pd{C(Ph)=N(Xy)C(=O)(= NPh)}(dppe)]-[BF4] (10). Protonation of the imidoyl group in Pd{C(Me)=NXy}(Cl)(dppe) suppresses the addition reaction when the protonated complex is reacted with RNCS; the products obtained in this case are [Pd{C(Me)=NHXy}(dppe)(S=C=NR)][BF4]2 (R = Me, 15; Ph, 16).

Iaith wreiddiolSaesneg
Tudalennau (o-i)4511-4521
Nifer y tudalennau11
CyfnodolynOrganometallics
Cyfrol22
Rhif cyhoeddi22
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 27 Hyd 2003
Cyhoeddwyd yn allanolIe

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