Development of an Asymmetric Trimethylenemethane Cycloaddition Reaction: Application in the Enantioselective Synthesis of Highly Substituted Carbocycles
作者:Barry M. Trost、Steven M. Silverman、James P. Stambuli
DOI:10.1021/ja207550t
日期:2011.12.7
azetidine structures, is discussed. The conditions developed to effect an asymmetric TMM reaction using 2-trimethylsilylmethyl allyl acetate were shown to be tolerant of a wide variety of alkene acceptors, providing the desired methylenecyclopentanes with high levels of enantioselectivity. The donor scope was also explored, and substituted systems were tolerated, including one bearing a nitrile moiety. These
Palladium-mediated cycloaddition approach to loganin aglucon
作者:Barry M. Trost、Thomas N. Nanninga
DOI:10.1021/ja00291a032
日期:1985.3
La synthese est basee sur la cycloaddition d'un trimethylsilylmethyl-2 allyl carboxylate substitue avec la cyclopentene-2one
La 合成 est basee sur la cycloaddition d'un trimethylsilylmethyl-2 烯丙基羧酸酯取代 avec la cyclopentene-2one
Anion Relay Chemistry Extended. Synthesis of a Gorgonian Sesquiterpene
作者:Amos B. Smith、Dae-Shik Kim、Ming Xian
DOI:10.1021/ol071281j
日期:2007.8.1
Extension of anionrelaychemistry (ARC) beyond the area of dithianes has been achieved by the design of two effectiveARClinchpins capable of three- and four-component couplings. To showcase the ARC tactic in natural product synthesis, a cytotoxic gorgonian linear sesquiterpene was constructed, and the absolute configuration assigned via the Kakisawa/Mosher method. The synthesis proceeded in five
The hydroperoxidation of various allylsilanes by singletoxygen has been studied. The regioselectivity of this reaction compared to those of ethyl azodicarboxylate and 4-phenyl-1,2,4-triazoline-3,5-dione, is discussed. Mechanisms are considered in the general field of the ene reaction applied to allylic organometallic Group IVB compounds. The structures of the new products (alcohols, urazoles, hydrazines)
An Approach for Rapid Increase in Molecular Complexity: Atom Economic Routes to Fused Polycyclic Ring Systems
作者:Barry M. Trost、Veronika Ehmke
DOI:10.1021/ol5009872
日期:2014.5.16
developed. This process generates alkynyl-substituted cyclopentanes in high yields and diastereo- and enantioselectivities. These chiral precursors are employed for the atom economic assembly of fused polycyclic hydrocarbons with hydroindene, hydroazulene, and hydrocyclopentanaphthalene scaffolds by consecutive cycloaddition reactions.