Conversion of Bromoalkenes into Alkynes by Wet Tetra-n-butylammonium Fluoride
摘要:
Tetra-n-butylammonium fluoride was found to be a mild and efficient base for the elimination reaction of bromoalkenes. Treatment of 1,1-dibromoalkenes, (Z)-1-bromoalkenes, and internal bromoalkenes with 5 equiv of TBAF center dot 3H(2)O in DMF yielded terminal and internal alkynes in high yields without undue regard to the presence of water.
Conversion of Bromoalkenes into Alkynes by Wet Tetra-<i>n</i>-butylammonium Fluoride
作者:Masaru Okutani、Yuji Mori
DOI:10.1021/jo802101a
日期:2009.1.2
Tetra-n-butylammonium fluoride was found to be a mild and efficient base for the elimination reaction of bromoalkenes. Treatment of 1,1-dibromoalkenes, (Z)-1-bromoalkenes, and internal bromoalkenes with 5 equiv of TBAF center dot 3H(2)O in DMF yielded terminal and internal alkynes in high yields without undue regard to the presence of water.
Alder-Ene Reactions of Arynes
作者:Rajdip Karmakar、Phani Mamidipalli、Sang Young Yun、Daesung Lee
DOI:10.1021/ol4005905
日期:2013.4.19
Efficient Alder-enereactions of various arynes generated directly from bis-1,3-diynes are described. The reactivity of ene donors with different tethers was examined under thermal and metal-catalyzed conditions, which indicates that both the formation of aryne intermediates and their ene reactions are less sensitive to the catalyst than to the structural features of the substrates.