Benzene, 1-iodo-4-(trifluoromethyl)- → (9S)-9-(tert-Butyldimethylsilyloxy)-4-isopropyl-7,7-dimethyl-3-(4-(trifluoromethyl)phenyl)-2',3',5',6,6',7,8,9-octahydro-3H-spiro[furo[3,4-c]quinoline-1,4'-pyran]-3-ol

Participants

Reaction Conditions

Reaction Steps

0.12 g 1-Iodo-4-(trifluoromethyl)benzene are dissolved in 3 ml tetrahydrofurane, cooled to −78° C. and treated dropwise with 0.54 ml of a 1.6 M solution of tert.-butyllithium in n-pentan. The mixture is stirred for 30 minutes and then a solution of 0.10 g (S)-9-(tert-butyldimethylsilyloxy)-4-isopropyl-7,7-dimethyl-2′,3′,5′,6,6′,7,8,9-octahydro-3H-spiro[furo[3,4-c]quinoline-1,4′-pyran]-3-one in 1 ml tetrahydrofurane is added dropwise. The mixture is stirred for 30 minutes at −78° C. and for 1 hour at −40° C. Then the reaction is quenched by addition of 0.5 ml methanol and purified via reversed phase chromatography (Varian Pursiut XRs C18 10μ, water/methanol/trifluoroacetic acid 90:10:0.1 to 0:100:0.1; 180 mL/min; 18 min).

Provenance & Evidence