67388-67-4Relevant articles and documents
SYNTHESIS OF 1-HYDROXY-2-(N-SUBSTITUTED)AZATWISTANES
Kadzyauskas, P. P.,Malinauskene, Yu. A.,Butkus, E. P.,Zefirov, N. S.
, p. 727 - 729 (1980)
The reductive amination of bicyclononane-2,6-dione with benzylamine or isopropylamine in the presence of sodium borohydride proceeds with the formation of 1-hydroxy-2-(N-substituted)azatwistanes.When 1-hydroxy-2-benzyl-2-azatwistane is refluxed with acetic anhydride, the ring is opened to give 2-acetoxy-6-acetylbenzylaminobicyclononane.The structures of the synthesized compounds were proved by means of the IR and PMR spectra and the results of elementary analysis.
Synthesis and chiroptical properties of enantiopure tricyclo[4.3.0.03,8]nonane-4,5-dione (twistbrendanedione)
Butkus, Eugenius,Dilinskas, Albinas,Stoncius, Sigitas,Rozenbergas, Ricardas,Urbanova, Marie,Setnicka, Vladimir,Bour, Petr,Volka, Karel
, p. 633 - 638 (2007/10/03)
The synthesis of chiral tricyclo[4.3.0.03,8]nonane-4,5-dione was accomplished starting from enantiomerically pure (+)-(1S,5S)-bicyclo[3.3.1]nonane-2,6-dione 1. Ring contraction of the latter with thallium(III) nitrate proceeded with high stereo