James M Takacs, Scott D Schroeder, Jianxin Han, Meg Gifford, Xun-Tian Jiang, Twana Saleh, Suresh Vayalakkada, Amy H Yap
文献索引:Org. Lett. 5(20) , 3595-8, (2003)
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[reaction: see text] Screening combinations of five catalyst precursors with 13 phosphorus ligands identified cyclization catalysts that favor carbocyclization-trapping with N-hydroxyphthalimide over a competing cycloisomerization mode.