Palladium catalyzed reduction of aryl triflates - utilization in thesynthesis of angelicin, olivin and chromomycinone from phenolsproduced in the benzannulation reaction of chromium carbenecomplexes
作者:Glen A. Peterson、Fen-Ann Kunng、J. Stuart McCallum、William D. Wulffe
DOI:10.1016/s0040-4039(00)95932-x
日期:——
The palladium catalyzed homogeneous reduction of a variety of phenols with either sodium borohydride or triethylammonium formate are effected as their triflate esters. This transformation extends the usefulness of the benzannulation reaction of chromium carbene complexes with acetylenes and is exemplified for the synthetic targets angelicin, olivin, and chromomycinone.
以硼氢化钠或甲酸三乙铵作为钯的三氟甲磺酸酯,可以实现钯催化的各种酚的均相还原。这种转变扩展了铬卡宾络合物与乙炔的苯环化反应的有用性,并被举例说明了合成目标当归素,奥利文和色霉素。