Dialkylammonium rhodanides and benzylidene acetone give racemic (6RS,7
RS)-4-dialkylaminobicyclo[2.2.2]octan-2-ones in a one-pot reaction in
good yields. The mechanism of the reaction includes a Diels-Alder step
, The structures are established by NMR spectra and a single crystal s
tructure analysis. The compounds consist of cations of racemates of op
tically active (6R,7R)- and ialkylamino-6,7-diphenylbicyclo[2.2.2]octa
n-2-ones and isothiocyanate anions. (C) 1998 Elsevier Science Ltd. All
rights reserved.