Synthesis and destannylation of η3-1-stannylallylpalladium(II) complexes
摘要:
Reaction of 1-tributylstannyl-3-chloropropene with a Pd(PPh3) species, generated in situ from Pd-2(dba)(3) and two equivalents of PPh3, afforded Pd(eta (3)-Bu3SnCHCHCH2)Cl(PPh3) (1). Complex 1 undenvent PPh3 promoted protodestannylation with acetic acid or diethyl malonate to give an unsubstituted eta (3)-allylpalladium moiety as either a detectable product or a reaction intermediate. The reaction of 1 with PPh3 and 0.5 equivalent of PdCl2(PhCN)(2) afforded the dinuclear complex (mu -1-3-eta (3):4-6-eta (3)- CH2CHCHCHCHCH2) {PdCl(PPh3}(2) (4) containing a hexatriene ligand, a formal vinylcarbene dimer. (C) 2001 Elsevier Science B.V. All rights reserved.
Synthesis and destannylation of η3-1-stannylallylpalladium(II) complexes
摘要:
Reaction of 1-tributylstannyl-3-chloropropene with a Pd(PPh3) species, generated in situ from Pd-2(dba)(3) and two equivalents of PPh3, afforded Pd(eta (3)-Bu3SnCHCHCH2)Cl(PPh3) (1). Complex 1 undenvent PPh3 promoted protodestannylation with acetic acid or diethyl malonate to give an unsubstituted eta (3)-allylpalladium moiety as either a detectable product or a reaction intermediate. The reaction of 1 with PPh3 and 0.5 equivalent of PdCl2(PhCN)(2) afforded the dinuclear complex (mu -1-3-eta (3):4-6-eta (3)- CH2CHCHCHCHCH2) {PdCl(PPh3}(2) (4) containing a hexatriene ligand, a formal vinylcarbene dimer. (C) 2001 Elsevier Science B.V. All rights reserved.