Gold-Catalyzed Carbenoid Transfer Reactions of Diynes - Pinacol Rearrangement<i>versus</i>Retro-Buchner Reaction
作者:Tobias Lauterbach、Takafumi Higuchi、Matthias W. Hussong、Matthias Rudolph、Frank Rominger、Kazushi Mashima、A. Stephen K. Hashmi
DOI:10.1002/adsc.201400849
日期:2015.3.9
terminal propargylic acetate moiety and one tertiary propargylicalcohol subunit were converted in the presence of a gold catalyst. After an initial 1,2‐migration of the acetoxy group at the terminal alkyne, a gold carbenoid is formed which is then transferred onto the internal alkyne of the propargylicalcohol. This combination enables the use of propargylic acetates as precursors for a gold‐catalyzed
Cu(<scp>i</scp>)-Catalyzed addition–cycloisomerization difunctionalization reaction of 1,3-enyne-alkylidenecyclopropanes (ACPs)
作者:Peng-Hua Li、Yin Wei、Min Shi
DOI:10.1039/d0ob01692f
日期:——
A copper(I)-catalyzed three-component addition–cycloisomerization difunctionalization reaction of 1,3-enyne-ACPs with Togni I reagent and TMSCN under mild reaction conditions has been developed, affording 3-trifluoroethylcyclopenta[b]naphthalene-4-carbonitrile derivatives. The reaction proceeded through a copper(I)-catalyzed 1,4-addition of conjugated 1,3-enynes via a radical relay process and aromatic
开发了铜(I)在温和的反应条件下,用Togni I试剂和TMSCN在1,3-烯炔-ACPs上催化铜的三组分加成-环异构化双官能化反应,得到3-三氟乙基环戊[ b ]萘-4-甲腈衍生物。通过铜进行反应(我)催化的1,4-加成共轭1,3-烯炔的通过自由基中继处理和丙二烯-ACP中间体的芳族环异构。
Stereoselective One-Pot Synthesis of 1-Aminoindanes and 5,6-Fused Azacycles Using a Gold-Catalyzed Redox-Pinacol-Mannich-Michael Cascade