Stereoselective radicalreactions are observed with chiral methacrylamides 3 and 7. although the π-systems are twisted to a considerable extent.
观察到手性甲基丙烯酰胺3和7的立体选择性自由基反应。尽管π系统在相当大的程度上扭曲了。
Reactions of (μ-PhPLi)2Fe2(CO)6 with metal halides
作者:Dietmar Seyferth、Richard S. Henderson、Timothy G. Wood
DOI:10.1002/recl.19881070306
日期:——
Metal carbonyl cluster complexes containing iron, phenylphosphido units and another metal (Ni, Pd, Pt, Co, Hg) have been prepared by reactions of (μ-PhPLi)2Fe2(CO)6 with metalhalides and (μ-PhPH)2Fe2(CO)6 with zerovalent metal complexes.
通过(μ-PhPLi)2 Fe 2(CO)6与金属卤化物和(μ-PhPH)的反应制备了含铁,苯基磷酰基单元和另一种金属(Ni,Pd,Pt,Co,Hg)的羰基金属簇合物2 Fe 2(CO)6与零价金属络合物。
Stereoselective intermolecular radical additions to amide-substituted alkenes
作者:Ned A. Porter、Daniel M. Scott、Ian J. Rosenstein、Bernd Giese、Andreas Veit、Heinz Georg Zeitz
DOI:10.1021/ja00005a051
日期:1991.2
substrate examined was the diamide of fumaric acid, 2. Hexyl, cyclohexyl, and tert-butyl radicaladdition to the amide of 4-oxo-2-pentenoic acid (1) gave approximately equal amounts of addition at the carbonyl and amide ends of the alkene. This approach provides the highest reported stereoselectivity for radicaladdition to an acyclic chiral alkene. Furthermore, a rationale for the diastereoselectivity is
Diastereoselective radical addition to methyleneoxazolidinones: an enantioselective route to α-amino acids
作者:Jonathan R. Axon、Athelstan L. J. Beckwith
DOI:10.1039/c39950000549
日期:——
The diastereoselectivity of radical addition to methyleneoxazolidinones depends on the nature of the addend radical and of the N-protecting group; the reaction provides a convenient enantioselective route to α-amino acids.
Free-radical addition to di- and tripeptides containing dehydroalanine residues
作者:David Crich、John W. Davies
DOI:10.1016/s0040-4020(01)89507-7
日期:1989.1
Radical addition, by the alkylmercury halide/sodium borohydride method, to di-and tripeptidescontaining a dehydroalanine residue proceeds smoothly with good chemical yield, but low diastereoselectivity, to saturated di- and tripeptides.