A Practical Synthesis of Enantiopure (R)-4-Hydroxy-2-cyclohexen-1-one
作者:Olaf Gebauer、Reinhard Brückner
DOI:10.1002/jlac.199619961010
日期:1996.10
The title compound R-4a was prepared from (–)-quinic acid (1) in 6 steps in 18% overall yield (Scheme 3) and with 100% enantiomeric purity (Figure 1). The initiating step is the regio- and stereoselective acetalization of the trans-oriented vicinal OH groups of 1 (+ 5 8). Alcohol R-4a can be protected as the 2-ethoxyethyl ether R-4e (78%).