Selective synthesis of (Z)-4-aryl-5-[1-(aryl)methylidene]-3-bromo-2(5H)-furanones
作者:Fabio Bellina、Chiara Anselmi、Stéphane Viel、Luisa Mannina、Renzo Rossi
DOI:10.1016/s0040-4020(01)01017-1
日期:2001.12
4-Aryl-3-bromo-2(5H)-furanones have been selectively synthesized in satisfactory yields by treatment of easily available 3,4-dibromo-2(5H)-furanone either with arylboronic acids in the presence of Ag2O and a catalytic amount of PdCl2(MeCN)2 or with aryl(trialkyl)stannanes in the presence of a catalyst precursor consisting of AsPh3 and a Pd(II) or a Pd(0) compound. These monobromo derivatives have been
通过在Ag 2的存在下用芳基硼酸处理易得的3,4-二溴-2(5 H)-呋喃酮,以令人满意的产率选择性合成了4-Aryl-3-bromo-2(5 H)-呋喃酮在由AsPh 3和Pd(II)或Pd(0)化合物组成的催化剂前体存在下,由O和催化量的PdCl 2(MeCN)2或与芳基(三烷基)锡烷一起催化。这些一溴衍生物已被用作各种(Z)-4-芳基-5- [1-(芳基)亚甲基] -3-溴-2(5 H-呋喃酮,包括具有与报道的天然存在的rubrolide N相对应的结构的化合物。这些合成化合物的结构和立体化学均已通过NMR技术明确确定。