Preparation of (2<i>S</i>,4<i>R</i>)-4-Hydroxypipecolic Acid and Derivatives
作者:James Gillard、Abraham、Paul C. Anderson、Pierre L. Beaulieu、Tibor Bogri、Yves Bousquet、Louis Grenier、Ingrid Guse、Pierre Lavallée
DOI:10.1021/jo9519874
日期:1996.1.1
Preliminary investigations on novel camphor-derived chiral sulfones: completely stereoselective formation of tricyclic β-hydroxy sulfones from 8- and 10-functionalized camphor derivatives
作者:Frank W. Lewis、Thomas C. McCabe、David H. Grayson
DOI:10.1016/j.tet.2011.07.081
日期:2011.9
β-hydroxy sulfones whose relative configurations were determined by X-ray crystallography. Tricyclic sulfones 23 and 24 underwent both β-elimination and retro-aldol reactions on further exposure to base. Reduction of the carbonyl group of the C-10 substituted sulfones afforded exo-configured isobornyl sulfones with high stereoselectivity. Reaction of the lithiated isobornyl benzyl sulfone 32 with benzaldehyde