Using chiral quaternary ammonium hydroxide as base, cycloetherification of a linear achiral diarylheptanoid compd., by way of an intramol. SNAr reaction, provides corresponding enantiomerically enriched cyclophane in good to excellent yield. [on SciFinder (R)]
Hatice Altug, Felix Ulrich Richter, Yasaman Jahani, Rui Lu, Bang Hyun Lee, Ming-Lun Tseng, Longfang Ye