Toward the total synthesis of elisapterosin B: a Hg(OTf)2-promoted diastereoselective intramolecular Friedel–Crafts alkylation reaction
摘要:
As part of an approach to the synthesis of the antitubercular agent elisapterosin B, we prepared two different chiral, non-racemic olefinic substrates and examined their diastereoselective ring closure using mercury salts. The effort yielded potential precursors to elisapterosin B in good yield with good to excellent diastereocontrol. (C) 2010 Elsevier Ltd. All rights reserved.
Toward the total synthesis of elisapterosin B: a Hg(OTf)2-promoted diastereoselective intramolecular Friedel–Crafts alkylation reaction
作者:Weijiang Ying、Charles L. Barnes、Michael Harmata
DOI:10.1016/j.tetlet.2010.10.109
日期:2011.1
As part of an approach to the synthesis of the antitubercular agent elisapterosin B, we prepared two different chiral, non-racemic olefinic substrates and examined their diastereoselective ring closure using mercury salts. The effort yielded potential precursors to elisapterosin B in good yield with good to excellent diastereocontrol. (C) 2010 Elsevier Ltd. All rights reserved.
Oxidation of 4-methoxyanilines to 1,4-benzoquinones using ceric ammonium nitrate (CAN)
作者:Yugang Chen、Weijiang Ying、Michael Harmata
DOI:10.1016/j.tetlet.2010.11.070
日期:2011.1
Treatment of substituted 4-methoxyanilines with cericammoniumnitrate in a 1:1 mixture of water and acetonitrile resulted in the formation of 1,4-benzoquinones in acceptable yields.