Identity of 3,4-dimethylenethiophene reactive intermediates from diazene and bis-allene precursors. Correlation of singlet biradical reactivity in the tetramethyleneethane and trimethylenemethane series.
作者:Marc M. Greenberg、Silas C. Blackstock、Jerome A. Berson
DOI:10.1016/s0040-4039(00)96480-3
日期:1987.1
The relative reactivities of the 3,4-dimethylenethiophene intermediates 1 from the deazetation of the diazene 5 and from the intramolecular cyclization of bisallenyl sulfide 3, determined by competition experiments, serve as a “fingerprint” to show that the same reactive transient is generated from both precursors.
Heterocyclic aromatic non-Kekule molecules. Synthesis and solution-phase chemistry of the singlet biradicals 3,4-dimethylenefuran and 3,4-dimethylenethiophene
作者:Keith J. Stone、Marc M. Greenberg、Silas C. Blackstock、Jerome A. Berson
DOI:10.1021/ja00192a025
日期:1989.5
3,4-Dimethylenefuran and 3,4-dimethylenethiophene, heterocyclic analogs of the disjoint non-Kekule hydrocarbon tetramethyleneethane
作者:Keith J. Stone、Marc M. Greenberg、Joshua L. Goodman、Kevin S. Peters、Jerome A. Berson