Telomerization of (H2C:CH)2 with 2-cyclohexen-1-one with Pd(0) catalysts formed from [(η3-CH2:CMeCH2)Pd(OAc)]2, tertiary phosphines, and H2O at 80° gave 4-17% yields of the mono- and dialkylation products I (R = H) and II. Alkylphosphines gave better yields than arylphosphines and the chelating ligand (Ph2PCH2)2 (III) gave the best obsd. yields. Analogous reaction of H2C:CMeCH:CH2 with III as phosphine gave 10% I (R = Me). The ion pair [HPdL3]+ OH- (L = phosphine) is proposed as the catalytically active species where the Pd-H bond represents the entry for the 2 diene units
Telomerization of conjugated dienes and cyclohex-2-en-1-one catalyzed by palladium-phosphine complexes
CITTERIO, ATTILIO;
1985-01-01
Abstract
Telomerization of (H2C:CH)2 with 2-cyclohexen-1-one with Pd(0) catalysts formed from [(η3-CH2:CMeCH2)Pd(OAc)]2, tertiary phosphines, and H2O at 80° gave 4-17% yields of the mono- and dialkylation products I (R = H) and II. Alkylphosphines gave better yields than arylphosphines and the chelating ligand (Ph2PCH2)2 (III) gave the best obsd. yields. Analogous reaction of H2C:CMeCH:CH2 with III as phosphine gave 10% I (R = Me). The ion pair [HPdL3]+ OH- (L = phosphine) is proposed as the catalytically active species where the Pd-H bond represents the entry for the 2 diene unitsFile in questo prodotto:
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