Ring Enlargements. VII. The Reaction of Cycloalkanones with Bisdiazoalkanes<sup>1</sup>
作者:C. David Gutsche、Terrill D. Smith
DOI:10.1021/ja01500a062
日期:1960.8
Sequential alkoxy radical fragmentation - transannular radical cyclisation - radical ring expansion reactions. A new approach to bicyclo[5.3.0]decanones and to bicyclo[6.3.0]undecanones
作者:Charles W. Ellwood、Gerald Pattenden
DOI:10.1016/s0040-4039(00)74280-8
日期:1991.3
of the unsaturated decanols (7), (9) and (16) with iodosylbenzene diacetate-iodine leads to the formation of intermediate allyloxy radicals viz (1) which undergo fragmentation followed by transannularcyclisation of the resulting carbon centered radicals (2) leading to the bicyclo [5.3.0]decanones [(3), “hydroazulenones”] (Scheme 1). When the iodomethylhydroazulenones (3) (R′=I) are treated with Bu3SnH-AIBN