Parallel Kinetic Resolution of 4-Alkynals Catalyzed by Rh(I)/Tol-BINAP: Synthesis of Enantioenriched Cyclobutanones and Cyclopentenones
作者:Ken Tanaka、Gregory C. Fu
DOI:10.1021/ja035489l
日期:2003.7.1
A Rh(I)/(R)-Tol-BINAP catalyst reacts with a racemic mixture of 4-alkynals to selectively furnish a cyclobutanone from the (R)-substrate and a cyclopentenone from the (S)-substrate. This method is noteworthy from several standpoints, including the scarcity of parallel kinetic resolutions (especially those that are catalyzed or that involve carbon-carbon bond formation) and the dearth of catalytic processes that generate enantioenriched cyclobutanones.
作者:Kirmse, Wolfgang、Lelgemann, Rudolf、Friedrich, Klaus
DOI:——
日期:——
Enantioselective Synthesis of Cyclopentenones via Rhodium-Catalyzed Kinetic Resolution and Desymmetrization of 4-Alkynals
作者:Ken Tanaka、Gregory C. Fu
DOI:10.1021/ja0266161
日期:2002.9.1
We have developed two new catalytic processes that provide efficient access to interesting chiral building blocks, cyclopentenones that bear tertiary and quaternary stereocenters, in high enantiomeric excess and very good yield. Structures such as these have potential utility in the synthesis of prostaglandins, pentenomycins, and related compounds.