Flash vacuum pyrolysis of pyrazoles as an alternative way to study vinylcarbenes

EL Moyano, GI Yranzo, J Elguero

Index: Moyano, Elizabeth L.; Yranzo, Gloria I.; Elguero, Jose Journal of Organic Chemistry, 1998 , vol. 63, # 23 p. 8188 - 8191

Full Text: HTML

Citation Number: 16

Abstract

Flash vacuum pyrolysis (FVP) reactions of 3, 5-diphenylpyrazole (1) and 3 (5)-methyl-5 (3)- phenylpyrazole (2) were carried out. The reaction products expected for nitrogen extrusion were formed through different rearrangements in the vinylcarbene intermediate. Kinetic parameters for nitrogen extrusion from 1 are reported. To show that FVP reactions of pyrazoles are useful to obtain vinylcarbenes, the reactions of other pyrazoles previously ...

Related Articles:

Iodine induced transformations of alcohols under solvent-free conditions

[Stavber, Gaj; Zupan, Marko; Stavber, Stojan Tetrahedron Letters, 2006 , vol. 47, # 48 p. 8463 - 8466]

Iodine/Et 3 SiH: a novel reagent system for the synthesis of 3-aryl-1H-indenes from 1, 3-diaryl propargyl alcohols

[Reddy, B.V. Subba; Reddy, B. Brahma; Rao, K.V. Raghavendra; Yadav Tetrahedron Letters, 2010 , vol. 51, # 43 p. 5697 - 5700]

A new synthesis of 3-substituted-1H-indenes through reaction of o-(β-magnesioalkyl) phenylmagnesium dihalides with carboxylate esters

[Baker, Robert W.; Foulkes, Michael A.; Griggs, Michael; Nguyen, Bao N. Tetrahedron Letters, 2002 , vol. 43, # 51 p. 9319 - 9322]

Efficient synthesis of indenes by FeCl 3· 6H 2 O-catalyzed intramolecular Friedel–Crafts reaction of aryl-substituted allylic alcohols

[Wang, Jialiang; Zhang, Lixin; Jing, Yufeng; Huang, Wen; Zhou, Xigeng Tetrahedron Letters, 2009 , vol. 50, # 35 p. 4978 - 4982]

Dynamic kinetic resolution–asymmetric transfer hydrogenation of 1-aryl-substituted cyclic ketones

[Alcock, Nathaniel J.; Mann, Inderjit; Peach, Philip; Wills, Martin Tetrahedron Asymmetry, 2002 , vol. 13, # 22 p. 2485 - 2490]

More Articles...