Efficient syntheses of 3H-azuleno[8,1-cd]pyridazines and their thermal and photochemical reactions

Wu, Chi‐Phi; Devulapally, Rammohan; Li, Tsung-Chieh; Ku, Chien-Kuo; Chung, Hsien‐Chung

doi:10.1016/j.tetlet.2010.07.007

Cited by 6 publications

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 2010, Wu et al reported the two- or three-step synthesis of azulenopyridazines 6a and 6b from 4-hydrazinylazulene 3, which were prepared by the S N Ar reaction of 4-ethoxyazulene 2 with hydrazine (N 2 H 4 ) [ 18 ]. The reaction of 3 with ketones in EtOH gives the corresponding hydrazones 4a and 4b in excellent yields.…”

Section: Synthesis and Reactivity Of Azulene Derivatives With 6-mementioning

confidence: 99%

Development of Heterocycle-Substituted and Fused Azulenes in the Last Decade (2010–2020)

Shoji

Okujima

Ito

2020

IJMS

View full text Add to dashboard Cite

Azulene derivatives with heterocyclic moieties in the molecule have been synthesized for applications in materials science by taking advantage of their unique properties. These derivatives have been prepared by various methods, involving electrophilic substitution, condensation, cyclization, and transition metal-catalyzed cross-coupling reactions. Herein, we present the development of the synthetic methods, reactivities, and physical properties for the heterocycle-substituted and heterocycle-fused azulenes reported in the last decade.

show abstract

Section: Synthesis and Reactivity Of Azulene Derivatives With 6-mementioning

confidence: 99%

Development of Heterocycle-Substituted and Fused Azulenes in the Last Decade (2010–2020)

Shoji

Okujima

Ito

2020

IJMS

View full text Add to dashboard Cite

show abstract

ChemInform Abstract: Efficient Syntheses of 3H‐Azuleno[8,1‐cd]pyridazines and Their Thermal and Photochemical Reactions.

Devulapally

et al. 2010

ChemInform

View full text Add to dashboard Cite

Efficient Syntheses of 3H-Azuleno[8,1-cd]pyridazines and Their Thermal and Photochemical Reactions. -A convenient one-pot procedure is developed for the synthesis of the title compounds (III) and (VI) via acid-catalyzed imine formation, intramolecular cyclization and dehydrogenation. -(WU*, C.-P.; DEVULAPALLY, R.; LI, T.-C.; KU, C.-K.; CHUNG, H.-C.; Tetrahedron Lett. 51 (2010) 37, 4819-4822, http://dx.

show abstract

A Convenient and Simple Synthesis of Densely Functionalized Cyclopenta[cd]azulenes and Cyclopenta[ef]heptalenes

Devendar

Cheng

et al. 2014

Helvetica Chimica Acta

Self Cite

View full text Add to dashboard Cite

As a part of our research program aimed at developing a unified synthetic way toward azulene derivatives of carbo-and heterocyclic molecules [6], we have recently reported various 2-substituted azulene derivatives, and their applications in the syntheses of densely functionalized benz[a]azulene and multisubstituted azulene-furan frameworks [6c]. Recently, we have also developed a method for synthesis, characterization, and applications of densely functionalized pyridazines and fulvene-type compounds containing azulene moieties [6d]. On the basis of this experience, we herein report a facile and convenient methodology for densely functionalized cyclopenta[cd]-azulenes and cyclopenta [ef]heptalenes starting from tropolone in 6 -8 steps. To the best of our knowledge, syntheses of such frameworks derived from 4-substituted azulene derivatives have not been properly reported in the literature, and all these products presented in this work are new in the azulene chemistry.

show abstract

Efficient syntheses of 3H-azuleno[8,1-cd]pyridazines and their thermal and photochemical reactions

Cited by 6 publications

References 39 publications

Development of Heterocycle-Substituted and Fused Azulenes in the Last Decade (2010–2020)

Development of Heterocycle-Substituted and Fused Azulenes in the Last Decade (2010–2020)

ChemInform Abstract: Efficient Syntheses of 3H‐Azuleno[8,1‐cd]pyridazines and Their Thermal and Photochemical Reactions.

A Convenient and Simple Synthesis of Densely Functionalized Cyclopenta[cd]azulenes and Cyclopenta[ef]heptalenes

Contact Info

Product

Resources

About