Synthesis of novel tetracyclic chromenes through carbanion chemistry of 4-methyl coumarins
N Chen, N Jain, J Xu, M Reuman, X Li, RK Russell…
Index: Chen, Ningyi; Jain, Nareshkumar; Xu, Jiayi; Reuman, Michael; Li, Xun; Russell, Ronald K.; Sui, Zhihua Tetrahedron Letters, 2006 , vol. 47, # 33 p. 5909 - 5913
Full Text: HTML
Citation Number: 9
Abstract
Various substituents were introduced onto the methyl group in 4-methyl coumarins through lithiation, followed by reactions with a wide range of electrophiles. The presence of an alkoxy group on 6′-phenyl ring was found to be pivotal for the success of this reaction. This procedure provided a convenient synthetic pathway to elaborate the methyl group of 4- methylcoumarins. Application of this methodology was showcased with the synthesis of ...
Related Articles:
A facile synthesis of an unsymmetric benzopyranobenzopyran ring system
[Kanojia, Ramesh M.; Jain, Nareshkumar; Xu, Jiayi; Sui, Zhihua Tetrahedron Letters, 2004 , vol. 45, # 30 p. 5837 - 5839]
A facile synthesis of an unsymmetric benzopyranobenzopyran ring system
[Kanojia, Ramesh M.; Jain, Nareshkumar; Xu, Jiayi; Sui, Zhihua Tetrahedron Letters, 2004 , vol. 45, # 30 p. 5837 - 5839]