An Examination of the Scope and Stereochemistry of the Ireland-Claisen Rearrangement of Boron Ketene Acetals
作者:Curtis A. Seizert、Eric M. Ferreira
DOI:10.1002/chem.201304384
日期:2014.4.7
The Ireland–Claisen rearrangement of boron ketene acetals is described. The boron ketene acetalintermediates are formed through a soft enolization that obviates the use of strong bases and the intermediacy of alkali metal enolates. Yields and diastereoselectivities of these rearrangements are very sensitive to the choice of boron reagent, even among those that have been shown to effect quantitative
Corey; Lee, Duck-Hyung, Journal of the American Chemical Society, 1991, vol. 113, # 10, p. 4026 - 4027
作者:Corey、Lee, Duck-Hyung
DOI:——
日期:——
Non-Carbonyl-Stabilized Metallocarbenoids in Synthesis: The Development of a Tandem Rhodium-Catalyzed Bamford−Stevens/Thermal Aliphatic Claisen Rearrangement Sequence
作者:Jeremy A. May、Brian M. Stoltz
DOI:10.1021/ja028020j
日期:2002.10.1
Bamford-Stevens/Claisenrearrangement is presented. The tandem reaction uses Eschenmoser hydrazones for the in situ generation of non-carbonyl-stabilized diazo alkanes, which are presumably intercepted by Rh(II) catalysts to induce a 1,2-hydride migration. This sequence provides high levels of stereocontrol for the generation of simple acyclic (Z)-enol ethers. These enol ethers undergo either thermal or Lewis