Modifications and extensions of the Pschorr reaction in pyrazole series. Access to the [2]benzopyrano[4,3-c]pyrazole system of pharmaceutical interest

1993 ◽  
pp. 285 ◽  
Author(s):  
Giuseppe Daidone ◽  
Salvatore Plescia ◽  
Benedetta Maggio ◽  
Vincenzo Sprio ◽  
Franco Benetollo ◽  
...  
Keyword(s):  
Pschorr Reaction

ChemInform Abstract: STUDIES ON THE SYNTHESIS OF HETEROCYCLIC COMPOUNDS. PART I. THE PSCHORR REACTION IN THE PYRAZOLE SERIES

1979 ◽  
Vol 10 (24) ◽  
Author(s):  
S. PLESCIA ◽  
G. DAIDONE ◽  
V. SPRIO ◽  
E. AIELLO ◽  
G. DATTOLO ◽  
...  
Keyword(s):  
Heterocyclic Compounds ◽  
Pschorr Reaction

Pschorr Reaction on 1-(2-Aminophenyl)-1,2,3,4-tetrahydro-2-methylisoquinoline

Heterocycles ◽  
1975 ◽  
Vol 3 (6) ◽  
pp. 439 ◽  
Author(s):  
Tetsuji Kametani ◽  
Shiroshi Shibuya ◽  
Ramamurthy Charubala ◽  
Manakkal S. Premila ◽  
Bantwal R. Pai
Keyword(s):  
Pschorr Reaction

Organic Photoredox Catalysis for Pschorr Reaction: A Metal-Free and Mild Approach to 6H-Benzo[c]chromenes

Synlett ◽  
2018 ◽  
Vol 29 (17) ◽  
pp. 2311-2315 ◽  
Author(s):  
Gaofeng Feng ◽  
Jing-Yao He ◽  
Qi-Fan Bai ◽  
Chengan Jin
Keyword(s):  
Diazonium Salts ◽  
Eosin Y ◽  
Photoredox Catalysis ◽  
Synthetic Route ◽  
Metal Free ◽  
Mild Conditions ◽  
Pschorr Reaction

An expedient organic photoredox Pschorr reaction has been developed that opens up a synthetic route to 6H-benzo[c]chromenes. The process can be performed under mild conditions by using eosin Y as a photoredox catalyst and acetonitrile as the solvent. The diazonium salts can be either preformed or generated in situ from the corresponding amines with t-BuONO. The process is amenable to gram-sale synthesis of 6H-benzo[c]chromenes, which can be further transformed into both 6H-benzo[c]chromen-6-ones through oxidation or to 6H-benzo[c]chromen-6-amine through sp3 C–H bond amination. The protocol provides an attractive route for the synthesis of a library of 6H-benzo[c]chromes.

ChemInform Abstract: A NOVEL PSCHORR REACTION IN THE PAPAVERINE SERIES

1973 ◽  
Vol 4 (40) ◽  
pp. no-no
Author(s):  
M. P. CAVA ◽  
I. NOGUCHI ◽  
K. T. BUCK
Keyword(s):  
Pschorr Reaction

Synthesis of 2,6,7-Trimethoxy-3,4-methylenedioxyphenanthene, a degradation product of ocoteine

1973 ◽  
Vol 26 (9) ◽  
pp. 2035 ◽  
Author(s):  
GY Moltrasio ◽  
D Giacopello ◽  
MJ Vernengo
Keyword(s):  
Degradation Product ◽  
Aporphine Alkaloid ◽  
Pschorr Reaction

The synthesis of 2,6,7-trimethoxy-3,4-methylenedioxyphenanthrene (3) by the application of the Pschorr reaction is reported. The product was identical with that obtained by degradation of the aporphine alkaloid ocoteine (2).

ChemInform Abstract: Modifications and Extensions of the Pschorr Reaction in Pyrazole Series. Access to the (2)Benzopyrano(4,3-c)pyrazole System of Pharmaceutical Interest.

ChemInform ◽  
2010 ◽  
Vol 24 (18) ◽  
pp. no-no
Author(s):  
G. DAIDONE ◽  
S. PLESCIA ◽  
B. MAGGIO ◽  
V. SPRIO ◽  
F. BENETOLLO ◽  
...  
Keyword(s):  
Pschorr Reaction

Photocatalysis of the pschorr reaction by Ru(bpy)32+

1987 ◽  
Vol 37 (2) ◽  
pp. 315-321 ◽  
Author(s):  
Herminia Cano-Yelo ◽  
Alain Deronzier
Keyword(s):  
Pschorr Reaction
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