Synthesis of 6,7-Dihydrodibenzo[b,j]phenanthroline Derivatives by Pfitzinger Condensation of Isatin and Cyclic Diketones
摘要:
All two kinds of 6,7-dihydrodibenzo[b,j]phenanthroline derivatives were synthesized by Pfitzinger condensation of isatins with 1,3-cyclohexanedione and 1,4-cyclohexanedione respectively. Structures of the derivatives were confirmed by NMR and other spectra data.
Synthesis of 6,7-Dihydrodibenzo[b,j]phenanthroline Derivatives by Pfitzinger Condensation of Isatin and Cyclic Diketones
摘要:
All two kinds of 6,7-dihydrodibenzo[b,j]phenanthroline derivatives were synthesized by Pfitzinger condensation of isatins with 1,3-cyclohexanedione and 1,4-cyclohexanedione respectively. Structures of the derivatives were confirmed by NMR and other spectra data.
A simple one-pot synthesis of quinoline-4-carboxylic acid derivatives by Pfitzinger reaction of isatin with ketones in water
作者:Qinghua Lv、Lizhen Fang、Pengfei Wang、Chenjuan Lu、Fulin Yan
DOI:10.1007/s00706-012-0822-5
日期:2013.3
AbstractAn improved Pfitzinger condensation reaction performed under acidic conditions is established. It provides a simple and efficient synthetic method for some useful quinoline-4-carboxylic acid derivatives using isatins and ketones that cannot be obtained easily under ordinary conditions. The generality of this methodology and the catalysts used for this protocol are explored in this paper. Structures
Improved Synthesis of 1-Oxo-1,2,3,4-tetrahydroacridine-9-carboxylic Acids from Isatins and 1,3-Cyclohexanedione
作者:Lizhen Fang、Qinghua Lv、Chenjuan Lu、Pengfei Wang
DOI:10.3987/com-12-12479
日期:——
An improved protocol for the preparation of 1-oxo-1,2,3,4-tetrahydroacridine-9-carboxylic acid derivatives via Pfitzinger condensation under acidic conditions is described, it provides a simple one-pot synthetic method for some useful 1-oxo-1,2,3,4-tetrahydroacridine-9-carboxylic acids which could not be synthesized successfully by Pfitzinger reactions under usual conditions using the corresponding isatins and 1,3-diketones. All the synthesized compounds are characterized by spectral data.
Synthesis of 6,7-Dihydrodibenzo[b,j]phenanthroline Derivatives by Pfitzinger Condensation of Isatin and Cyclic Diketones
作者:Lizhen Fang、Jinshuo Ma、Chenjuan Lu、Huanhuan Li、Xiaoli Yang
DOI:10.3987/com-13-12894
日期:——
All two kinds of 6,7-dihydrodibenzo[b,j]phenanthroline derivatives were synthesized by Pfitzinger condensation of isatins with 1,3-cyclohexanedione and 1,4-cyclohexanedione respectively. Structures of the derivatives were confirmed by NMR and other spectra data.