Synthesis of 11<i>H</i>-Pyrido[2,1-b]quinazolin-11-one and Derivatives Using Ultrasound Irradiation
作者:Maite L. Docampo Palacios、Rolando F. Pellón Comdom
DOI:10.1081/scc-120018939
日期:2003.1.6
An improved synthesis of 11H-pyrido[2,1-b]quinazolin-11-one and derivatives, by the condensation of 2-chlorobenzoic acid and 2-aminopyridine derivatives in N,N-dimethylformamide (DMF) is reported using ultrasound irradiation. The derivatives were prepared in good yield and in a short reaction time.
Synthesis of 11H-Pyrido[2,1-b]quinazolin-11-one and Derivatives
作者:Rolando F. Pellón、Ramón Carrasco、Lorenzo Rodés
DOI:10.1080/00397919608003804
日期:1996.10
The synthesis of 11H-pyrido[2,1-b]quinazolin-11-one (IV) and derivatives, by the condensation of o-chlorobenzoic acid and 2-aminopyridine in DMF is reported.
Microwave‐Promoted Ullmann Condensation of 2‐Aminopyridines with 2‐Chlorobenzoic Acids
作者:Rolando F. Pellón、Ana Martín、Maite L. Docampo、Miriam Mesa
DOI:10.1080/00397910600616727
日期:2006.7
Abstract A new efficient synthetic method of microwave‐promoted Ullmanncondensation of 2‐aminopyridines with 2‐chlorobenzoic acids to yield various substituted 11H‐pyrido[2,1‐b]quinazolin‐11‐ones in dry media is presented. Results were compared with those obtained following the classical heating.