A facile access to the synthesis of functionalised unsymmetrical biaryls from 2H-pyran-2-ones through carbanion induced C–C bond formation †
作者:Vishnu J. Ram、Mahendra Nath、Pratibha Srivastava、Sanjay Sarkhel、Prakas R. Maulik
DOI:10.1039/b005572g
日期:——
A convenient synthesis of highly functionalised biaryls 3 and 6 has been delineated through carbanion induced C–C bond formation from 6-aryl-3-cyano-4-substituted-2H-pyran-2-ones (1, 4) and acetone. Extension of this reaction, using aromatic ketones led to (4,6-diarylpyran-2-ylidene)acetonitrile (7) in lieu of the anticipated 2,4-diaryl-6-methylthiobenzonitrile (8). The structure of 2-methyl-6-methylthio-4-(3
高度功能化的便捷合成 联芳基 3和6已经通过负碳离子诱导的C-C键形成划定由6-芳基-3-氰基-4-取代的-2- ħ -吡喃-2-酮(1,4),并丙酮。使用芳族化合物扩展该反应酮类导致(4,6-二芳基吡喃-2-亚甲基)乙腈(7)代替了预期的2,4-二芳基-6-甲基硫代苄腈(8)。的结构2-甲基-6-甲硫基-4-(3,4-亚甲基二氧苯基)苄腈(3f)由单晶X射线衍射 分析并显示出各种弱相互作用,这导致分子在结晶状态下的稳定性和堆积。