Journal of Organometallic Chemistry p. 163 - 174 (1994)
Update date:2022-08-30
Topics:
Kondo, Teruyuki
Sone, Yoshitsugu
Tsuji, Yasushi
Watanabe, Yoshihisa
Various transition-metal complexes including Group 7 and 8-10 metal carbonyls are highly active catalyst precursors for the photochemical carbonylation of alkyl iodides having β-hydrogens on saturated sp3-carbons at room temperature under 1 atm of carbon monoxide.Primary, secondary and tertiary alkyl iodides are smoothly carbonylated by this catalyst system without β-hydride elimination (dehydrohalogenation) to give the corresponding esters or amides in high yields.In employment of Mn2(CO)10 as a catalyst, electrochemical carbonylation of alkyl iodides also occurred via generation of an anionic manganese carbonyl intermediate.Actually, anionic manganese carbonyl complexes (pentacarbonylmanganates) showed high catalytic activity for thermal carbonylation of alkyl iodides at room temperature under 1 atm of carbon monoxide without photo-irradiation and electrolysis.Mechanistic studies were performed with kinetics and ESR and it was suggested that the present photo-, electro- and thermal carbonylation would involve a non-chain radical mechanism. Key words: Group 7; Group 8; Group 9; Group 10; Carbonylation; Catalysis; Alkyl iodide
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