SHEPHERD, M. K., J. CHEM. SOC. CHEM. COMMUN., 1985, N 13, 880-881
作者:SHEPHERD, M. K.
DOI:——
日期:——
Facile synthesis of substituted thiophenes via Pd/C-mediated sonogashira coupling in water
作者:Sirisilla Raju、P. Rajender Kumar、K. Mukkanti、Pazhanimuthu Annamalai、Manojit Pal
DOI:10.1016/j.bmcl.2006.09.041
日期:2006.12
The first successful Pd/C-mediated Sonogashira coupling of iodothiophene with terminal alkynes in water is described here. Pd/C-CuI-PPh(3) was found to be an efficient catalyst system for this coupling reaction. Using this economic and reliable process a variety of acetylenic thiophenes with a wide range of functional groups were prepared in good yields. Synthetic applications and in vitro anticancer
Dithieno[3,4-c:3′,4′-e]pyridazine N-oxide (7) has been synthesized in five steps from 3-iodothiophene-2carbaldehyde; flash vacuum thermolysis of (7) gave the stable title compound (1).
由3-碘噻吩-2甲醛经五步合成了二噻吩并[3,4- c:3',4'- e ]哒嗪N-氧化物(7)。(7)的快速真空热解得到稳定的标题化合物(1)。