Jun 20, 2015
Since we have no money to buy optically pure BINOL ( [1,1’-binaphthalene]-2,2’-diol) I made some. Here in the flask is some raw ( R)-(+)-BINOL.
It’s quite interesting that optically pure BINOL forms quite different shaped crystals than the racemic one. From now just a quick recrystallization from toluene and I’ve finally got some +95% optically pure product (confirmed by polarimetry).