(Ra)-(+)-3-[(R)-tetrahydrofuran-2-yl]-3'-phenyl-5,5',6,6',7,7',8,8'-octahydro-1,1'-biisoquinoline N,N'-dioxide; N-ethyl-N,N-diisopropylamine in tetrahydrofuran T=-78°C; Sakurai reaction; 1 h; Inert atmosphere; optical yield given as percent eeenantioselective reaction;