Microwave assisted synthesis and photophysical properties of blue emissive 2-amino-3-carboxamide-1,1′-biaryls and 4-(arylamino)-[1,1′-biphenyl]-3-carboxamides via Suzuki and Chan-Evans-Lam coupling
作者:Motakatla Novanna、Sathananthan Kannadasan、Ponnusamy Shanmugam
DOI:10.1016/j.dyepig.2019.108015
日期:2020.3
Chan-Evans-Lam coupling reaction. Furthermore, 4-(4′-oxo-3′, 4′-dihydro-1′H-spiro[fluorene-9,2′-quinazolin]-6′-yl)benzonitrile 12a was obtained from biaryl derivative 4j and fluorenone 11a and 6(4- methoxyphenyl)2-(ferrocenyl) quinazolin-4(3H)-one 12b from biaryl derivative 4k and ferrocenealdehyde 11b using phosphotungstic acid as green catalyst and solvent free microwave irradiation condition. Remarkably,
的有效微波辅助合成2-氨基-3-甲酰胺-1,1'-联芳基衍生物4A-P和三联苯衍生物5a中从2-氨基-5-碘苯甲酰胺2A,2-氨基-3,5-二diiodobenzamide 2B和(已经通过Suzuki偶联获得了杂芳基硼酸。已证明产物4-氨基-4'-氰基-[1,1'-联苯] -3-羧酰胺4j的合成效用可用于合成4-(芳基氨基)-[1,1'-联苯]-通过Chan-Evans-Lam偶联反应的3-羧酰胺衍生物10a-c。此外,从联芳基衍生物4j和芴酮获得4-(4'-氧代-3',4'-二氢-1'H-螺[芴-9,2'-喹唑啉] -6'-基)苄腈12a。11a和6(4-甲氧基苯基)2-(二茂铁基)喹唑啉-4(3H)-来自联芳基衍生物4k和二茂铁醛11b的一个12b,使用磷钨酸作为绿色催化剂和无溶剂微波辐射条件。值得注意的是,所有合成的2-氨基-3-羧酰胺-1,1'-联芳基和4-(芳基氨基)-[1,1'-联苯基]