Ng. Ramesh et al., Regioselective electrophilic oxidation of a 5-amino-endo-tricyclo[5.2.1.0(2,6)]decenyl enaminone. Synthesis of a novel heterocyclic compound, TETRAHEDR L, 42(43), 2001, pp. 7707-7709
An unexpected tandem regioselective oxidation and cyclization of 5-((S)-2'-
hydroxymethylpyrrolidin-1'-yl)-endo-tricyclo[5.2.1.0(2,6)]deca-4,8-dien-3-o
nes 7 is reported. The reaction proceeds smoothly to afford novel tetracycl
ic compounds 8 and 9 in good yield, The structure of 8 was established by s
ingle-crystal X-ray analysis. Surprisingly, the C8-C9 norbornene double bon
d remains intact under these oxidative conditions. (C) 2001 Elsevier Scienc
e Ltd. All rights reserved.