Heterocyclic aromatic non-Kekule molecules. Synthesis and solution-phase chemistry of the singlet biradicals 3,4-dimethylenefuran and 3,4-dimethylenethiophene
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.
Ground-state multiplicities of 3,4-dimethylenefuran and 3,4-dimethylenethiophene. Experimental tests of ab initio and semiempirical theories of heteroatom-bridged disjoint biradicals
作者:Marc M. Greenberg、Silas C. Blackstock、Keith J. Stone、Jerome A. Berson
DOI:10.1021/ja00192a026
日期:1989.5
Absolute rates of dimerization and cycloaddition of 3,4-dimethylenefuran and 3,4-dimethylenethiophene by nanosecond time-resolved spectroscopy
作者:J. C. Scaiano、Veronique. Wintgens、Ann. Bedell、Jerome A. Berson
DOI:10.1021/ja00220a061
日期:1988.6
STONE K. J.; GREENBERG M. M.; GOODMAN J. L.; PETERS K. S.; BERSON J. A., J. AMER. CHEM. SOC., 108,(1986) N 25, 8088-8089
作者:STONE K. J.、 GREENBERG M. M.、 GOODMAN J. L.、 PETERS K. S.、 BERSON J. A.