Enantioselective Syntheses of 2-Deoxyxylono-1,4-lactone and 2-Deoxyribono-1,4-lactone from 1,3-Dioxan-5-yl Diazoacetates
作者:Michael P. Doyle、Jason S. Tedrow、Alexey B. Dyatkin、Coenraad J. Spaans、Doina G. Ene
DOI:10.1021/jo991211t
日期:1999.11.1
95% ee but with the mirror image configuration of that produced from the trans-2-(tert-butyl) analogue. The catalysts that are most suitable for these carbon-hydrogen insertion reactions are chiraldirhodium(II) carboxamidates. 1,3-Dialkoxy-2-propyl diazoacetates give mainly 2-deoxyxylono-1,4-lactone derivatives (>90:10) with generally high enantiocontrol, but replacement of hydrogen at the 2-position
Synthesis of 2-deoxyxylolactone from glycerol derivatives via highly enantioselective carbon-hydrogen insertion reactions
作者:Michael P. Doyle、Alexey B. Dyatkin、Jason S. Tedrow
DOI:10.1016/s0040-4039(00)76684-6
日期:1994.6
Diazodecomposition of 1,3-dialkoxy-2-propyl diazoacetates catalyzed by chiral dirhodium(II) carboxamides results in highly enantioselective and diastereoselective carbon-hydrogen insertion which forms 3,5-dialkyl 2-deoxyxylolactones in up to 98% enantiomeric excess.