作者:Fumitoshi Yagishita、Hiroki Ishikawa、Tatsuo Onuki、Shoko Hachiya、Takashi Mino、Masami Sakamoto
DOI:10.1002/anie.201205097
日期:2012.12.21
Separated: 3‐Hydroxy‐3‐phenylisoindolin‐1‐ones have been resolved by dynamic preferential crystallization. The compounds were effectively racemized through ring‐opening and ring‐closing reactions via achiral intermediates under basic conditions. Crystallization from a toluene solution containing 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) with stirring and evaporation of the solvent gave optically active
分离的:3-羟基-3-苯基异吲哚啉-1-酮已通过动态优先结晶分离。在碱性条件下,这些化合物通过非手性中间体通过开环和闭环反应有效地消旋。在搅拌下从含有1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU)的甲苯溶液中结晶并蒸发溶剂,可定量得到具有高ee值的光学活性晶体。