A practical preparation of .alpha.-alkoxylithium reagents: synthesis of syn or anti 1,3-diols
摘要:
Phenylthio acetals 3 are easily prepared from beta-hydroxy aldehydes and can be reduced to anti alkyllithiums 7 and subsequently equilibrated to syn alkyllithiums 9 with excellent stereoselectivity and in good overall yield. A practical preparation of 3 and a reductive lithiation procedure using catalytic naphthalene makes these alkyllithium reagents conveniently available on a multigram scale.
A practical preparation of .alpha.-alkoxylithium reagents: synthesis of syn or anti 1,3-diols
作者:Scott D. Rychnovsky、Donald J. Skalitzky
DOI:10.1021/jo00042a005
日期:1992.7
Phenylthio acetals 3 are easily prepared from beta-hydroxy aldehydes and can be reduced to anti alkyllithiums 7 and subsequently equilibrated to syn alkyllithiums 9 with excellent stereoselectivity and in good overall yield. A practical preparation of 3 and a reductive lithiation procedure using catalytic naphthalene makes these alkyllithium reagents conveniently available on a multigram scale.