Rudolf Criegee
Karlsruhe Institute of Technology
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XXIIIrd International Congress of Pure and Applied Chemistry#R##N#Special Lectures Presented at Boston, USA, 26–30 July 1971 | 1971
Rudolf Criegee; Dieter Schönleber; Rolf Huber; Christa Schweickhardt; T.P. Carter
While the gas phase pyrolysis of exo - and endo -pentamethylhomofulvene (1,2,3,4,6-pentamethy1–4-methylenebicyclo[3.1.0]-hex-2-ene) leads to pentamethylvinylcyclopentadiene, the pyrolysis products in the presence of di - t .-butyl peroxide are the three isomeric tetramethylethylbenzenes in the ratio 2:2:1. The aromatiza-tion reaction seems to proceed by an intermolecular methyl migration. Hexamethylhomofulvene, even in the presence of peroxide, is isomerized only to pentamethylpropenylcyclopentadiene, while tetramethylhomofulvene isomerizes to pentamethylbenzene under all conditions. The fact that the 2,3,5,6-tetramethylbenzyl radical does not show an intramolecular hydrogen shift is an important control experiment for a discussion of the reaction mechanism.
Chemische Berichte | 1955
Rudolf Criegee; Albrecht Kerckow; Helmut Zinke
Chemische Berichte | 1965
Rudolf Criegee; Dieter Seebach; Rudolph Ernst Winter; Bernt Börretzen; Hans-Albert Brune
Chemische Berichte | 1957
Rudolf Criegee; Annemarie Rimmelin
Chemische Berichte | 1957
Rudolf Criegee; Gerd Louis
Chemische Berichte | 1960
Rudolf Criegee; Gerhard Schröder
Chemische Berichte | 1953
Rudolf Criegee; Werner Hörauf; Wolf Dietrich Schellenberg
Chemische Berichte | 1954
Rudolf Criegee; Gertrud Blust; Helmut Zinke
Chemische Berichte | 1963
Rudolf Criegee; Peter Günther
Chemische Berichte | 1960
Rudolf Criegee; Gerhard Schröder; Günther Maier; Hans‐Gerhard Fischer
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