Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Yasuhiro Ueta"'
Publikováno v:
Bulletin of the Chemical Society of Japan. 94(No. 12):2970-2972
When a crystalline 1,3-diphosphacyclobutane-2,4-diyl bearing the 3,5-dichloro-2,4,6-triazine substituent was irradiated with muon beam, two paramagnetic species showing muon hyperfine coupling cons...
Autor:
Yasuhiro Ueta, Shigekazu Ito
Publikováno v:
The Journal of Organic Chemistry. 85:14384-14390
The phosphino groups in 1,3-diphosphacyclobutane-2,4-diyl in the singlet biradicaloid play important roles in determining the physicochemical characteristics of the particular open-shell phosphorus heterocycles. Herein, we demonstrate that the introd
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 194:735-738
Here we report a preliminary muon spin rotation (µSR) analysis of a sterically encumbered 2,4,6-tri-t-butylthiobenzaldehyde. A powder sample of the thiobenzaldehyde was placed in a beam of ...
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 27(7)
The phosphanoxy-substituted phosphaalkene bearing the P=C-O-P skeleton can be prepared from diphosphene Mes*P=PMes* (Mes*=2,4,6-tBu3 C6 H2 ), and their use for catalysis is of interest. In this paper, complexation of the phosphanoxy-substituted phosp
Publikováno v:
Angewandte Chemie International Edition. 57:8608-8613
A 1,3-diphosphacyclobutane-2,4-diyl contains a unique unsaturated cyclic unit, and the presence of radical-type centers have been expected as a source of functionality. This study demonstrates that the P-heterocyclic singlet biradical captures muoniu
Publikováno v:
European Journal of Inorganic Chemistry. 2017:3048-3052
The sterically encumbered 1-amino-1,3-diphosphacyclobuten-4-yl anion, prepared from 1-(2,4,6-tri-t-butylphenyl)-2-phosphaethyne and 0.5 equiv of lithium diisopropylamide (LDA), was characterized spectroscopically, and afforded the corresponding air-t
Publikováno v:
Phosphorus sulfur and silicon and the related elements. 190:854-857
p-Type organic field-effect transistor (OFET) property of the air-stable 1,3-diphosphacyclobutane-2,4-diyl was preliminarily characterized and discussed based on the physicochemical properties and ...
Autor:
Yoshiro Yamashita, Koichi Mikami, Yasuhiro Ueta, Makoto Kobayashi, Jun-ichi Nishida, Daisuke Hashizume, Shigekazu Ito, Trang Thi Thu Ngo
Publikováno v:
Journal of the American Chemical Society. 135:17610-17616
We have developed methods for installing aryl substituents directly on the phosphino groups of the 1,3-diphosphacyclobutane-2,4-diyl system. The aryl substituents tuned the electronic and structural characteristics of the biradical unit both in solut
Publikováno v:
Angewandte Chemie (International ed. in English). 55(26)
Tuning of the physicochemical properties of the 1,3-diphosphacyclobutane-2,4-diyl unit is attractive in view of materials applications. The use of arynes is shown to be effective for installing relatively electron rich aryl substituents into the open
Publikováno v:
Chem. Commun.. 50(No. 65):9204-9206
The reaction of a kinetically stabilized diphosphene (Mes*P=PMes*: Mes* = 2,4,6-tri-tert-butylphenyl) with an organolithium reagent and an acyl halide afforded the corresponding phosphanoxy-substituted phosphaethene [((phosphinidene)methoxy)phosphine