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[摘要]:3-Bromo-2,2,6,6-tetramethyl-4-oxopiperidine-1-oxyl (I) was reacted with several C-nucleophiles to give novel bicyclic pyrrolidine nitroxides through partial Favorskii rearrangement. Further redn. with sodium borohydride gave spin probes with free hydroxyl groups and under harsh redn. conditions allowed the Favorskii rearrangement to proceed to completion. |
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