Nucleophilic aromatic substitutions of unactivated aryl halides by methyl selenide anions. Synthesis and selective dealkylations of aryl alkyl selenides
Nucleophilic aromatic substitutions of unactivated aryl halides by methyl selenide anions. Synthesis and selective dealkylations of aryl alkyl selenides
A general procedure for the synthesis of methylthio-, methylseleno- and methyltelluro-substituted aromatic compounds
作者:Lars Engman、Jonas S.E. Hellberg
DOI:10.1016/0022-328x(85)80366-1
日期:1985.12
A one-pot procedure is described which allows the facile introduction of one or two methylchalcogeno groups into a variety of monobromo or dibromo aromatics. The bromo compounds were converted to their corresponding lithio derivatives by treatment with t-butyllithium in tetrahydrofuran at −78°C, and these derivatives were then treated, at ambient temperature with elemental sulfur, selenium, or tellurium
Sindelar,K. et al., Collection of Czechoslovak Chemical Communications, 1972, vol. 37, p. 1734 - 1747
作者:Sindelar,K. et al.
DOI:——
日期:——
Keimatsu; Satoda, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1935, vol. 55, p. 58,65; dtsch. Ref. S. 19, 21
作者:Keimatsu、Satoda
DOI:——
日期:——
Frustrated Rotations in Single-Molecule Junctions
作者:Young S. Park、Jonathan R. Widawsky、Maria Kamenetska、Michael L. Steigerwald、Mark S. Hybertsen、Colin Nuckolls、Latha Venkataraman
DOI:10.1021/ja903731m
日期:2009.8.12
We compare the conductance of 1,4-bis(methylthio)benzene with that of 2,3,6,7-tetrahydrobenzo[1,2-b:4,5-b']dithiophene and the conductance of 1,4-bis(methylseleno)benzene with that of 2,3,6,7-tetrahydrobenzo[1,2-b:4,5-b']diselenophene and show explicitly that the orientation of an Au-S or Au-Se bond relative to the aromatic TT system controls electron transport through conjugated molecules. Specifically, we have found that the conduction pathway connects the Au electrodes to the aromatic pi-system via the chalcogen p lone pairs, and greater overlaps among these components lead to higher conductivity through the molecular junction.
TIECCO, M.;TESTAFERRI, L.;TINGOLI, M.;CHIANELLI, D.;MONTANUCCI, M., J. ORG. CHEM., 1983, 48, N 23, 4289-4296
作者:TIECCO, M.、TESTAFERRI, L.、TINGOLI, M.、CHIANELLI, D.、MONTANUCCI, M.