The peri interaction of 1-functionalized naphthalenes equipped with a triarylmethyl cation at the 8-position has been studied because of the reversibility of the ring-closing reaction, which was monitored closely by NMR spectroscopy in the case of the cyclic ammonium salt 5b. Carbocycle 4a and N-heterocycle 5b did not exhibit any tendency for ring cleavage under various conditions, whereas the naphtho-annulated
Spatial Anion Control on Palladium for Mild C–H Arylation of Arenes
作者:Jyoti Dhankhar、Elisa González-Fernández、Chao-Chen Dong、Tufan K. Mukhopadhyay、Anthony Linden、Ilija Čorić
DOI:10.1021/jacs.0c09611
日期:2020.11.11
C-H arylation of arenes without the use of directing groups is a challenge, even for simple molecules, such as benzene. We describe spatial anion control as a concept for the design of catalytic sites for C-H bond activation, thereby enabling nondirected C-H arylation of arenes at ambient temperature. The mild conditions enable late-stage structural diversification of biologically relevant small molecules
Syntheses and Properties of 2,2′-Binaphtho[1,8-<i>de</i>]-1,3-dithiinylidene and Its Selenium Analog, 2-(1,3-Dithiol-2-ylidene)naphtho[1,8-<i>de</i>]-1,3-dithiin, and 2-(4<i>H</i>-Thiopyran-4-ylidene)naphtho[1,8-<i>de</i>]-1,3-dithiin
作者:Koji Yui、Yoshio Aso、Tetsuo Otsubo、Fumio Ogura
DOI:10.1246/bcsj.61.953
日期:1988.3
In order to discover newelectrondonors for conducting charge-transfer complexes, the four title compouds 1–4 composed of two heterocycles have been prepared via 1,8-dichalcogen-bridged naphthalene. The cyclic voltammetery indicates that symmetrical 1 and 2 are poor donors, but unsymmetrical 3 and 4 possess considerable donor abilities. The latter compounds are thus capable of forming some crystalline
SYNTHESES AND PROPERTIES OF BINAPHTHO[1,8-<i>de</i>]-1,3-DITHIIN-2-YLIDENE AND ITS SELENIUM ANALOGUE
作者:Koji Yui、Yoshio Aso、Tetsuo Otsubo、Fumio Ogura
DOI:10.1246/cl.1986.551
日期:1986.4.5
With a view to discovering new electron donors for low-dimensionally metallic materials, the title compounds were prepared via the corresponding 1,8-dichalcogen-bridged naphthalenes. Their donor characters were examined by cyclic voltammetry, as compared with those of the reference compounds.