Synthesis of β-organotelluro vinylphosphine oxides by hydrotelluration of 1-alkynylphosphine oxides and their palladium-catalyzed cross-coupling with alkynes

被引:42
作者
Braga, AL [1 ]
Vargas, F [1 ]
Zeni, G [1 ]
Silveira, CC [1 ]
de Andrade, LH [1 ]
机构
[1] Univ Fed Santa Maria, Dept Quim, BR-97105900 Santa Maria, RS, Brazil
关键词
phosphine oxide; tellurium; enyne; palladium; cross-coupling;
D O I
10.1016/S0040-4039(02)00778-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
beta-Organotelluro vinylphosphine oxides 2 can be prepared by treatment of 1-alkynylphosphine oxides I with tellurolate anions in satisfactory yields. Compound 2d undergoes direct coupling reaction with terminal alkynes in the presence of PdCl2/CuI, triethylamine and methanol at room temperature to give beta-alkynyl vinylphosphine oxides 3 with retention of configuration in good yields. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4399 / 4402
页数:4
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