Synthesis of 1,3-Teraryls Through Carbanion Induced Ring Transformation of Functionalised Pyran-2-ones
作者:Atul Goel、Pratibha Srivastava、Mahendra Nath、Vishnu J. Ram
DOI:10.1055/s-1998-2008
日期:1998.2
1,3-Teraryls 2 were synthesised by reaction of 6-aryl-3-methoxycarbonyl-4-(methylthio)-2H-pyran-2-ones 1 a with aryl methyl ketones. An analogous reaction with 6-aryl-3-cyano-4-(methylthio)-2H-pyran-2-ones 1 b and aryl methyl ketones failed to yield cyano-substituted 1,3-teraryls, but afforded (4,6-diarylpyran-2-ylidene)acetonitriles 4 in poor yields.
6- 芳基-3-甲氧羰基-4-(甲硫基)-2H-吡喃-2-酮 1 a 与芳基甲基酮反应合成了 1,3-三芳基 2。6- 芳基-3-氰基-4-(甲硫基)-2H-吡喃-2-酮 1 b 与芳基甲基酮的类似反应未能得到氰基取代的 1,3-三芳基化合物,但得到了 (4,6-二芳基吡喃-2-亚基)乙腈 4,产率较低。