108970-03-2Relevant articles and documents
Reaction of allylmanganese(II) reagents with aldehydes
Ahn,Doubleday,Cohen
, p. 33 - 41 (1995)
The reaction of allylmanganese(II) reagents with aldehydes gives alcohols with high regioselectivity. The allylmanganese(II) reagents are prepared by transmetallation between manganese(II) chloride and allyllithium compounds which are generated from allyl
Cobalt-mediated Reactions in Synthesis. The Degradation of Carboxylic Acids to Functionalised Noralkanes via Acylcobalt Salophen Intermediates
Patel, Vinod F.,Pattenden, Gerald,Thompson, David M.
, p. 2729 - 2734 (2007/10/02)
Arylmethyl- and allyl-carbonylcobalt salophen complexes, e.g. (7), (8), (9), and (22), readily undergo carbon-to-cobalt-bond homolysis and in situ decarbonylation, producing new alkyl radical centres which can be intercepted with oxygen-, nitrogen-, halogen-, sulphur-, and selenium-containing trapping agents leading to functionalised noralkanes.The sequence constitutes a useful, and in some cases more flexible, variant of the classical Hunsdiecker reaction, and amounts to a cobalt equivalent of the Barton radical decarboxylation reaction of carboxylic acids via their corresponding thiohydroxamic esters.In a similar manner, irradiation of the oxy-substituted acylcobalt salen reagents (25) and (26) in the presence of tetramethylpiperidine oxide produces the products (14) and (27), respectively, resulting from homolysis-decarboxylation and alkyl-radical trapping.In the absence of radical-trapping agents, irradiation of (7c) produces (18), and irradiation of (29) leads to the but-2-enolide (32).
