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A study of the scope and regioselectivity of the ruthenium-catalyzed [3 + 2]-cycloaddition of azides with internal alkynes.
[3 + 2]-Cycloadditions of alkyl azides with various unsymmetrical internal alkynes in the presence of CpRuCl(PPh3)2 as catalyst in refluxing benzene have been examined, leading toExpand
  • 179
Efficient methodology for alkylation of vinylnitroso compounds with carbon nucleophiles.
A diverse array of nitrosoalkenes derived from both acyclic and cyclic ketones, as well as aldehydes, via the Denmark protocol using alpha-chloro-O-TBS-oximes can be trapped efficiently in situ by aExpand
  • 17
Total syntheses of the monoterpene indole alkaloids (±)-alstilobanine A and E and (±)-angustilodine.
A synthetic strategy has been developed culminating in stereoselective total syntheses of the small class of unusual monoterpenoid indole alkaloids exemplified by alstilobanines A (3) and E (2) andExpand
  • 20
Total synthesis of the unusual monoterpenoid indole alkaloid (±)-alstilobanine A.
The monoterpene indole alkaloids, which are usually comprised of a tryptamine moiety appended to a single C9- or C10-terpenoid unit, constitute one of the largest known classes of naturalExpand
  • 16
An expedient reductive method for conversion of ketoximes to the corresponding carbonyl compounds.
A wide array of readily prepared pivalates of ketoximes can be converted to the corresponding ketones in good yields by treatment with iron powder in THF containing catalytic amounts of bothExpand
  • 13
A mild, efficient method for the oxidation of α-diazo-β-hydroxyesters to α-diazo-β-ketoesters
Abstract A wide variety of α-diazo-β-ketoesters can be prepared in good overall yields via a two-step sequence involving addition of ethyl lithiodiazoacetate to aliphatic, aromatic, and conjugatedExpand
  • 10
Synthesis of phthalan and phenethylamine derivatives via addition of alcohols to rhodium(II)-azavinyl carbenoids
Abstract 1-Sulfonyl-1,2,3-triazoles undergo inter- and intramolecular 1,3-OH insertion with rhodium(II)-azavinyl carbenoid intermediates upon treatment with a rhodium(II) catalyst. Products of thisExpand
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