合成这些 de tosylates 和 mesylates d'alcyne-1yle a partir de diacetoxyiodobenzo et d'acides sulfoniques。结构 cristalline d'un compose intermediaire (le tosylate de (phenyl phenylethynyl (iodonium))
合成这些 de tosylates 和 mesylates d'alcyne-1yle a partir de diacetoxyiodobenzo et d'acides sulfoniques。结构 cristalline d'un compose intermediaire (le tosylate de (phenyl phenylethynyl (iodonium))
1,3-Dipolar cycloaddition of alkynyliodonium salts with a nitrile oxide. Synthesis and reactivity of isoxazolyliodonium salts
作者:Tsugio Kitamura、Yoichiro Mansei、Yuzo Fujiwara
DOI:10.1016/s0022-328x(01)01322-5
日期:2002.3
1,3-Dipolar cycloaddition reaction of alkynyliodonium salts with 2,4,6-trimethylbenzonitrile N-oxide has been examined with respect to inactivated alkynyliodonium salts. The cycloaddition with the nitrile oxide has been found to proceed successful to give the corresponding isoxazolyliodonium salts in good to high yields. The reactivity of the selected isoxazolyliodonium salts has been examined.
Fluorovinylic compounds were synthesized by a one-pot procedure from the corresponding alkynyliodonium salts and alkalimetalfluorides. Different reaction parameters, such as the temperature, the solvent and the reaction time were examined, and interestingly CsF was chosen for regio- and stereo-selective reactions leading to different alkenyliodonium salts in good yields. Their reduction using NaBH4
Mild palladium-catalysed carbonylation of alkynylphenyliodonium toluene-p-sulphonates under carbon monoxide at atmospheric pressure
作者:Tsugio Kitamura、Ichiro Mihara、Hiroshi Taniguchi、Peter J. Stang
DOI:10.1039/c39900000614
日期:——
Alkoxycarbonylation of alkynylphenyliodonium toluene-p-sulphonates catalysed by a palladium catalyst proceeded under carbon monoxide at atmosphericpressure at room temperature to give alkyne carboxylates in high yields.
Novel heteroaromatic CH insertion of alkylidenecarbenes. A new entry to furopyridine synthesis
作者:Tsugio Kitamura、Kuniyuki Tsuda、Yuzo Fujiwara
DOI:10.1016/s0040-4039(98)01034-x
日期:1998.7
of potassium tert-butoxide undergoes a novel heteroaromatic CHinsertion of alkylidenecarbenes generated in situ to give the corresponding furopyridine derivatives. The heteroaromatic CHinsertion shows an extremely high selectivity compared with the possible aliphatic CHinsertion. This process is also applied to furoquinoline synthesis.
New synthesis of 3,5-disubstituted-5H-thiazolo[3,2-a]pyrimidine via ring annulation of 3,4-dihydropyrimidin-2(1H)-thione using alkynyl(aryl)iodonium salts
作者:Amol V. Shelke、Bhagyashree Y. Bhong、Nandkishor N. Karade
DOI:10.1016/j.tetlet.2012.11.098
日期:2013.2
A transition metal-free protocol for the synthesis of biologically active thiazolo[3,2-alpha]pyrimidine derivatives has been achieved by the cyclocondensation of 3,4-dihydropyrimidin-2(1H)-thiones with alkynyl(aryl)iodonium tosylates. This reaction demonstrates another useful application of alkynyl(aryl)iodonium tosylates as synthon of alkynyl cation. (c) 2012 Elsevier Ltd. All rights reserved.