2016
DOI: 10.3998/ark.5550190.p009.584
|View full text |Cite
|
Sign up to set email alerts
|

The Niementowski reaction of anthranilic acid with ethyl acetoacetate revisited: a new access to pyrano[3,2-c]quinoline-2,5-dione

Abstract: The reaction of anthranilic acid with ethyl acetoacetate gives rise directly to 4-methylpyrano[3,2-c]quinoline-2,5-dione. The mechanism is assumed to involve condensation of the initial product with a second molecule of the β-ketoester. None of the expected compound (2-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid) is formed in the reaction.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1

Citation Types

0
1
0

Year Published

2021
2021
2025
2025

Publication Types

Select...
3

Relationship

0
3

Authors

Journals

citations
Cited by 3 publications
(1 citation statement)
references
References 6 publications
0
1
0
Order By: Relevance
“…[24] Synthesized quinoline hetero-cyclic compounds are synthesis has become a powerful for making new molecules for drug discovery and development [25] and other hands, quinoline derivatives owe their popularity since quinoline ring is quickly available synthetic approaches have been reported. [26,27] Although modern methods of Conrad-Limpach, [28] Niementowski, [29,30] Doebner-Miller, [31] Vilsmeier-Haak reactions [32] Claisen condensation reaction of amines with carboxyl derivative followed by cyclization to produce the desired quinolines molecule. [33] The classical multistep reaction operations, not only results in an increase in efficiency and but also reduces the generating large quantities of waste.…”
Section: Introductionmentioning
confidence: 99%
“…[24] Synthesized quinoline hetero-cyclic compounds are synthesis has become a powerful for making new molecules for drug discovery and development [25] and other hands, quinoline derivatives owe their popularity since quinoline ring is quickly available synthetic approaches have been reported. [26,27] Although modern methods of Conrad-Limpach, [28] Niementowski, [29,30] Doebner-Miller, [31] Vilsmeier-Haak reactions [32] Claisen condensation reaction of amines with carboxyl derivative followed by cyclization to produce the desired quinolines molecule. [33] The classical multistep reaction operations, not only results in an increase in efficiency and but also reduces the generating large quantities of waste.…”
Section: Introductionmentioning
confidence: 99%