Two new 6-substituted 2,2'-bipyridines, L, 6-(2-tolyl)bipy, L-1, and 6-(2,6-xylyl)bipy, L-2, have been synthesized. Their reactions with Na-2[PdCl4] or {Pd(OAc)(2)} afford either 1:1 adducts [Pd(L)X-2] (X = Cl, OAc) or five-membered cyclometallated derivatives [Pd(L-1-H)X] arising from C(sp(2))-H activation. From the chloro-alkyl intermediates [Pd(L)(Me)Cl], in the presence of Na[BAr4'] (Ar'=3,5-(CF3)(2)C6H3 cationic species [Pd(L)(Me)(S)](+) (L=L-1, L-2; S=CH3CN) can be obtained. At variance, in less coordinating solvents, e.g. dichloromethane, unexpected activation of a C(sp(3))-H bond occurs with loss of methane, to afford 6-membered cyclometallated derivatives. The latter species were isolated as [Pd(L-H)(PPh3)][BAr4']. (C) 2003 Elsevier Science B.V. All rights reserved.

Reactivity of 6-(2-tolyl)- and 6-(2,6-xylyl)-2,2 '-bipyridines with palladium(II) derivatives. Selective C(sp(3))-H vs. C(sp(2))-H activation RID D-3096-2011 / Stoccoro, Sergio; Soro, B; Minghetti, G; Zucca, Antonio; Cinellu, Maria Agostina. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - 679:1(2003), pp. 1-9. [10.1016/S0022-328X(03)00457-1]

Reactivity of 6-(2-tolyl)- and 6-(2,6-xylyl)-2,2 '-bipyridines with palladium(II) derivatives. Selective C(sp(3))-H vs. C(sp(2))-H activation RID D-3096-2011

STOCCORO, Sergio;ZUCCA, Antonio;CINELLU, Maria Agostina
2003-01-01

Abstract

Two new 6-substituted 2,2'-bipyridines, L, 6-(2-tolyl)bipy, L-1, and 6-(2,6-xylyl)bipy, L-2, have been synthesized. Their reactions with Na-2[PdCl4] or {Pd(OAc)(2)} afford either 1:1 adducts [Pd(L)X-2] (X = Cl, OAc) or five-membered cyclometallated derivatives [Pd(L-1-H)X] arising from C(sp(2))-H activation. From the chloro-alkyl intermediates [Pd(L)(Me)Cl], in the presence of Na[BAr4'] (Ar'=3,5-(CF3)(2)C6H3 cationic species [Pd(L)(Me)(S)](+) (L=L-1, L-2; S=CH3CN) can be obtained. At variance, in less coordinating solvents, e.g. dichloromethane, unexpected activation of a C(sp(3))-H bond occurs with loss of methane, to afford 6-membered cyclometallated derivatives. The latter species were isolated as [Pd(L-H)(PPh3)][BAr4']. (C) 2003 Elsevier Science B.V. All rights reserved.
2003
Reactivity of 6-(2-tolyl)- and 6-(2,6-xylyl)-2,2 '-bipyridines with palladium(II) derivatives. Selective C(sp(3))-H vs. C(sp(2))-H activation RID D-3096-2011 / Stoccoro, Sergio; Soro, B; Minghetti, G; Zucca, Antonio; Cinellu, Maria Agostina. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - 679:1(2003), pp. 1-9. [10.1016/S0022-328X(03)00457-1]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/49815
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