## Abstract Aldehyde (IV) is used as a key starting material in the synthesis of naphthyridines (VI), (VIII), (X), and (XII).
Synthesis of benzo[3,4-h][1,6]naphthyridines via Friedländer condensation with active methylenes
✍ Scribed by Ramhari V. Rote; Sandeep M. Bagul; Deepak P. Shelar; Sandeep R. Patil; Raghunath B. Toche; Madhukar N. Jachak
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2010
- Tongue
- English
- Weight
- 146 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0022-152X
- DOI
- 10.1002/jhet.391
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Novel 4‐amino‐6‐chloroquinoline‐3‐carbaldehyde has been synthesized by synchronous reduction by lithium aluminiumhydride and finally oxidation with MnO~2~. Friedländer condensation of it with reactive methylenes furnished novel benzo[3,4‐h][1,6]naphthyridine derivatives. J. Heterocyclic Chem., (2011).
📜 SIMILAR VOLUMES
## Abstract Novel pyrazolo[3,4‐__h__][1,6]naphthyridine derivatives **6**, **8**, **9**, **11**, **13**, and **15** have been synthesized by Friedlander condensation of new 4‐amino‐3‐methyl‐1‐phenyl‐1__H__‐pyrazolo[3,4‐__b__]pyridine‐5‐carbaldehyde (__o__‐aminoaldehyde) **4** with active methylene
## Abstract Heating of hexahydro‐5__H__‐pyrrolo[2,1‐__c__][1,4]benzodiazepine‐2,5,11‐trione in boiling phosphoryl chloride led to a rearranged product like 3,5‐dichlorobenzo[__h__][1,6]naphthyridine. This structure was established from X‐ray diffraction analysis.