e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521

Tetrahedron letters

Photocyclization of 5-(1-alkenyl)-1-phenylpyrazoles: a convenient synthesis of 4, 5-dihydropyrazolo [1, 5-gaquinolines

C Deshayes, S Gelin

Index: Deshayes, Christian; Gelin, Suzanne Tetrahedron Letters, 1983 , vol. 24, # 43 p. 4679 - 4682

Full Text: HTML

Citation Number: 3

Abstract

This document does not have an outline. ... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. ... Author links open the overlay panel. Numbers correspond to the affiliation list which can be exposed by using the show more link. ... The photocyclization of some 5-(1-alkenyl)-4-ethoxycarbonyl-1-phenylpyrazoles affords 3-ethoxycarbonyl-4,5-dihydropyrazolo [1,5-a]quinolines which are decarboxylated to the 3-unsubstituted analogs.

ethyl 4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylate Structure

ethyl 4-methyl-...

~63%

4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

4-methyl-4,5-di...

ethyl 1-phenyl-5-(prop-1-en-2-yl)-1H-pyrazole-4-carboxylate Structure

ethyl 1-phenyl-...

~%

4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

4-methyl-4,5-di...

5,5-dimethyl-3-ethoxycarbonyl-4,5-dihydropyrazolo(1,5-a)quinoline Structure

5,5-dimethyl-3-...

~65%

5,5-dimethyl-4H-pyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

5,5-dimethyl-4H...

ethyl 5-(2-methylprop-1-en-1-yl)-1-phenyl-1H-pyrazole-4-carboxylate Structure

ethyl 5-(2-meth...

~%

5,5-dimethyl-4H-pyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

5,5-dimethyl-4H...

5-Methyl-4,5-dihydro-pyrazolo[1,5-a]quinoline-3-carboxylic acid ethyl ester Structure

5-Methyl-4,5-di...

~66%

5-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

5-methyl-4,5-di...

ethyl (E)-1-phenyl-5-(prop-1-en-1-yl)-1H-pyrazole-4-carboxylate Structure

ethyl (E)-1-phe...

~%

5-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

5-methyl-4,5-di...

4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

4-methyl-4,5-di...

~67%

4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline Structure

4-methyl-4,5-di...

ethyl 1-phenyl-5-(prop-1-en-2-yl)-1H-pyrazole-4-carboxylate Structure

ethyl 1-phenyl-...

~%

4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline Structure

4-methyl-4,5-di...

ethyl 4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylate Structure

ethyl 4-methyl-...

~%

4-methyl-4,5-dihydropyrazolo[1,5-a]quinoline Structure

4-methyl-4,5-di...

5,5-dimethyl-4H-pyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

5,5-dimethyl-4H...

~77%

5,5-dimethyl-4H-pyrazolo[1,5-a]quinoline Structure

5,5-dimethyl-4H...

ethyl 5-(2-methylprop-1-en-1-yl)-1-phenyl-1H-pyrazole-4-carboxylate Structure

ethyl 5-(2-meth...

~%

5,5-dimethyl-4H-pyrazolo[1,5-a]quinoline Structure

5,5-dimethyl-4H...

5,5-dimethyl-3-ethoxycarbonyl-4,5-dihydropyrazolo(1,5-a)quinoline Structure

5,5-dimethyl-3-...

~%

5,5-dimethyl-4H-pyrazolo[1,5-a]quinoline Structure

5,5-dimethyl-4H...

5-methyl-4,5-dihydropyrazolo[1,5-a]quinoline-3-carboxylic acid Structure

5-methyl-4,5-di...

~77%

5-methyl-4,5-dihydropyrazolo[1,5-a]quinoline Structure

5-methyl-4,5-di...

5-Methyl-4,5-dihydro-pyrazolo[1,5-a]quinoline-3-carboxylic acid ethyl ester Structure

5-Methyl-4,5-di...

~%

5-methyl-4,5-dihydropyrazolo[1,5-a]quinoline Structure

5-methyl-4,5-di...

ethyl (E)-1-phenyl-5-(prop-1-en-1-yl)-1H-pyrazole-4-carboxylate Structure

ethyl (E)-1-phe...

~%

5-methyl-4,5-dihydropyrazolo[1,5-a]quinoline Structure

5-methyl-4,5-di...