Inside-outside stereoisomerism. 5. Synthesis and reactivity of trans-bicyclo[n.3.1] alkanones prepared via the intramolecular photocycloaddition of dioxenones
作者:Jeffrey D. Winkler、Bor Cherng Hong、John P. Hey、Paul G. Williard
DOI:10.1021/ja00023a037
日期:1991.11
formation of trans-fused photoadducts is observed in almost all cases, which upon fragmentation lead to the synthesis of bicycloalkanones with an 'inside-outside" or trans intrabridgehead stereochemical relationship. This methodology has been applied to the synthesis of several 'inside-outside" bicycloalkanones that cannot otherwise be prepared. The unusual reactivity of both the dioxanone photoadducts