Formation of Dinuclear Ruthenacyclopentenyl Complexes from Reactions of Cp*Ru(μ-SPri)2RuCp* (Cp* = η5-C5Me5) with Terminal Alkynes and Subsequent Ring-Opening Reaction Induced by ButNC To Give Diruthenium μ-Alkenyl Complexes
摘要:
Coordinatively unsaturated complex Cp*Ru(mu-SPri)(2)RuCp* (1, Cp* = eta(5)-C(5)MeF(5)) reacts with excess HC=CR (R = Tol, C=CH(CH2)(3)CH2; Tol = 4-CeH(4)Me) to form dinuclear ruthenacyclopentenyl complexes Cp*Ru(mu-SPri)[eta(2):eta(3)-mu-CH(Tol)C{C(Tol)=CHSPri}CHC(Tol)]RuCp* (3) and Cp*Ru(mu-SPri)[eta(2):eta(3)-mu-C{C(C=CH(CH2)(3)CH2)=CHSPri}CHC{(CH2)(3)CH2}CH]RuCp* (4). These dinuclear metallacycles 3 and 4 are readily converted to mu-sigma,pi-alkenyl complexes Cp*(Bu(t)NC)Ru(mu-SPri)[eta(1):eta(2):mu-C(Tol)=CHC{C(Tol)=CHSPri}=CH(Tol)]RuCp* (5) and Cp*(Bu(t)NC)Ru(mu-SPri)[eta(1):eta(2):mu-C {C(C=CH(CH2)(3)CH2)=CHSPri}=CH{C=CH(CH2)(3)CH2}]RuCp* (6), respectively, through Bu(t)NC-induced ring-opening reactions with retention of the singly bonded diruthenium core bridged by a thiolato ligand. The structures of 3-6 have been determined by X-ray crystallography.
Formation of Dinuclear Ruthenacyclopentenyl Complexes from Reactions of Cp*Ru(μ-SPri)2RuCp* (Cp* = η5-C5Me5) with Terminal Alkynes and Subsequent Ring-Opening Reaction Induced by ButNC To Give Diruthenium μ-Alkenyl Complexes
摘要:
Coordinatively unsaturated complex Cp*Ru(mu-SPri)(2)RuCp* (1, Cp* = eta(5)-C(5)MeF(5)) reacts with excess HC=CR (R = Tol, C=CH(CH2)(3)CH2; Tol = 4-CeH(4)Me) to form dinuclear ruthenacyclopentenyl complexes Cp*Ru(mu-SPri)[eta(2):eta(3)-mu-CH(Tol)C{C(Tol)=CHSPri}CHC(Tol)]RuCp* (3) and Cp*Ru(mu-SPri)[eta(2):eta(3)-mu-C{C(C=CH(CH2)(3)CH2)=CHSPri}CHC{(CH2)(3)CH2}CH]RuCp* (4). These dinuclear metallacycles 3 and 4 are readily converted to mu-sigma,pi-alkenyl complexes Cp*(Bu(t)NC)Ru(mu-SPri)[eta(1):eta(2):mu-C(Tol)=CHC{C(Tol)=CHSPri}=CH(Tol)]RuCp* (5) and Cp*(Bu(t)NC)Ru(mu-SPri)[eta(1):eta(2):mu-C {C(C=CH(CH2)(3)CH2)=CHSPri}=CH{C=CH(CH2)(3)CH2}]RuCp* (6), respectively, through Bu(t)NC-induced ring-opening reactions with retention of the singly bonded diruthenium core bridged by a thiolato ligand. The structures of 3-6 have been determined by X-ray crystallography.