Gold-catalyzed hydrofunctionalization of allenes with nitrogen and oxygen nucleophiles and its mechanistic insight
摘要:
A wide range of nucleophiles, such as amines and alcohols, reacted intermolecularly with various allenes in the presence of gold catalysts to give the corresponding hydrofunctionalization products in high yields. The intermolecular hydroamination of chiral allenes with aromatic and aliphatic amines proceeded with high to good enantioface selectivities to afford the corresponding chiral allylic amines. On the other hand, in the case of the intermolecular hydroalkoxylation of chiral allenes, no chirality transfer was observed. This marked contrast on the chirality transfer indicates that the mechanisms of gold-catalysis between hydroamination and hydroalkoxylation are different. (C) 2008 Published by Elsevier Ltd.
Construction of 1,5-Enynes by Stereospecific Pd-Catalyzed Allyl–Propargyl Cross-Couplings
作者:Michael J. Ardolino、James P. Morken
DOI:10.1021/ja302329f
日期:2012.5.30
The palladium-catalyzed cross-coupling of chiral propargyl acetates and allyl boronates delivers chiral 1,5-enynes with excellent levels of chirality transfer and can be applied across a broad range of substrates.
Gold-Catalyzed Intermolecular Hydroamination of Allenes with Arylamines and Resulting High Chirality Transfer
作者:Naoko Nishina、Yoshinori Yamamoto
DOI:10.1002/anie.200600331
日期:2006.5.12
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