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Sigmatropic Dearomatization/Defluorination Strategy for C-F Transformation: Synthesis of Fluorinated Benzofurans from Polyfluorophenols.

Angewandte Chemie, 2018
Facile synthesis of fluorinated benzofurans from polyfluorophenols has been accomplished by means of a sigmatropic dearomatization/defluorination strategy composed of three processes: (1) interrupted Pummerer reaction of ketene dithioacetal monoxides ...
K. Okamoto +5 more
semanticscholar +1 more source

[3,3]- and [5,5]-Sigmatropic Rearrangements of Aryl Sulfoxides Using An ‘Assembly/Deprotonation’ Technology

Synlett : Accounts and Rapid Communications in Synthetic Organic Chemistry, 2019
The redox-neutral ortho-functionalizations of aryl/heteroaryl sulfoxides via interrupted Pummerer processes have been greatly advanced since its discovery by Kita and Padwa in the early 2000s.
Lei Zhang, Mengjie Hu, Bo Peng
semanticscholar +1 more source

The effect of transition state bond order on sigmatropic shifts and cycloaddition reactions

Tetrahedron, 1986
A recently developed classical model for the calculation of activation free energies of chemical reactions is applied to the study of sigmatropic shifts and cycloaddition reactions. The model does not require the consideratlon of parallel or perpendicular effects along the reaction coordinate to interpret substituent effects.
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THE STEREOCHEMISTRY OF SIGMATROPIC REACTIONS

1972
Roland E. Lehr, Alan P. Marchand
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Theory of Sigmatropic Reactions

1971
R.B. Woodward, R. Hoffmann
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Tandem electrocyclic-sigmatropic reaction of benzocyclobutenes. An expedient route to 4,4-disubstituted isochromanones