Intramolecular reductive coupling reactions promoted by samarium diiodide
作者:Gary A. Molander、Caryn Kenny
DOI:10.1021/ja00203a027
日期:1989.10
Samariumdiiodide is a useful reagent for promoting intramolecular reductive coupling reactions, generating functionalized carbocycles. Ketone-olefin coupling, pinacolic coupling, and other related reductive coupling reactions are accomplished under mild conditions with samariumdiiodide. Products are accessed in high yield, and in many cases excellent stereochemical control is achieved at three contiguous
Electroreduction of gamma and delta-cyano ketones in i-PrOH with Sn cathode gave alpha-hydroxy ketones and their dehydroxylated ketones as the intramolecularly coupled products. Guaiazulene, (-)-valeranone, polyquinanes, dihydrojasmone, methyl dihydrojasmonate, and rosaprostol have been synthesized by utilizing this electroreductive intramolecular coupling of gamma and delta-cyano ketones in one of the key steps. Similarly, electroreduction of a mixture of ketone and nitrile gave the corresponding intermolecularly coupled product. The product obtained by the electroreductive intermolecular coupling of (+)-dihydrocarvone with acetonitrile has been found to be the precursor of an effective chiral ligand for the enantioselective addition of diethylzinc to aldehydes.
Trolliet,M. et al., Bulletin de la Societe Chimique de France, 1974, p. 1484 - 1486
作者:Trolliet,M. et al.
DOI:——
日期:——
Piperidines and Azabicyclo Compounds. I. Via Michael Condensations
作者:Noel F. Albertson
DOI:10.1021/ja01162a068
日期:1950.6
Colonge,J. et al., Bulletin de la Societe Chimique de France, 1966, p. 2005 - 2011