描述了炔基(苯基)碘化甲苯磺酸盐与全氟烷烃亚磺酸钠(R fn SO 2 Na)的无添加剂和过渡金属的全氟烷烃磺酰化。亲核性差的R fn SO 2 Na与二氯甲烷中的炔基(苯基)碘鎓盐在室温下在氮气氛下反应5-60分钟,从而以令人满意的定量收率提供了各种炔属三氟甲酮和炔基全氟烷基砜。碘鎓盐中芳基乙炔基部分的苯环上取代基的位置对反应有很大影响。五元环乙烯基砜的形成表明该反应通过亚烷基卡宾中间体。此外,成功扩大反应规模也证明了该新方法的实用性。该方法的优点包括反应时间短,条件温和以及易于获得全氟链烷磺酰化试剂(R fn SO 2 Na)。
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.
Hypervalent iodine in synthesis 50: A novel method of synthesis of selenazoles by cyclocondensation of selenoamides and alkynyl(phenyl)iodonium salts
作者:Peng-Fei Zhang、Zhen-Chu Chen
DOI:10.1002/jhet.5570380233
日期:2001.3
A novel method for the synthesis of selenazoles by cyclocondensation of primary selenoamides and alkynyl(phenyl)iodomium salts and the reaction mechanism are reported. The synthetic method is simple, mild and the yields are high.
Generation, trapping and fate of alkylidenecarbene-iodonium ylides from the addition of NaN3 to alkynylphenyliodonium tosylates
作者:Tsugio Kitamura、Peter J. Stang
DOI:10.1016/s0040-4039(00)82069-9
日期:1988.1
Addition of NaN3 to RCCPh·Ts results in novel alkylidenecarbene-iodonium ylides, 5, R(N3)CCIPh, that by either protonation, ylide transfer or insertion of the derived carbene R(N3)CC: give unique functionalized vinyl azides.
Alkynyl(phenyl)iodonium salts react with benzotriazole ion prepared from benzotriazole and potassium t-butoxide to give 1-alkynylbenzotriazoles in good yields, indicating that the alkynyliodonium salts can be used for direct alkynylation of benzotriazole. (C) 1998 Elsevier Science Ltd. All rights reserved.
A Convenient Synthesis of New 1-Alkynyl-1H-benzotriazoles by Reaction of Alkynyl(phenyl)iodonium Salts with Benzotriazole Ion
The reaction of arylethynyl(phenyl)iodonium tosylates with benzotriazole ion gave new 1-alkynyl-1H-benzotriazoles in good yields. This result indicates that alkynyliodonium salts can be used for direct alkynylation of benzotriazole. However, the similar reactions of (tert-butylethynyl)(phenyl)iodonium and 1-octynyl(phenyl)iodonium tosylates do not afford the 1-alkynyl-1H-benzotriazoles but alkenylbenzotriazoles via the reaction of alkylidenecarbenes.