Synthesis of symmetrical 1,3-butadiynes by homocoupling reactions of alkynylboronates mediated by a copper salt
作者:Yasushi Nishihara、Masanori Okamoto、Yoshiaki Inoue、Mikihiro Miyazaki、Mitsuru Miyasaka、Kentaro Takagi
DOI:10.1016/j.tetlet.2005.10.056
日期:2005.12
Alkynylboronates are employed as a practical and versatile precursor for a variety of π-conjugated organic compounds. In the presence of a Cu(I) or Cu(II) salt, transformation of alkynylboronates into the corresponding 1,3-diynes upon exposure to air takes place readily in aprotic polar solvents such as DMI.
炔基硼酸酯用作各种π-共轭有机化合物的实用且通用的前体。在Cu(I)或Cu(II)盐的存在下,炔烃硼酸酯暴露于空气后,在质子惰性极性溶剂(如DMI)中容易转化为相应的1,3-二炔。