Simple Syntheses of Aryl Alkyl Thioethers and of Aromatic Thiols from Unactivated Aryl Halides and Efficient Methods for Selective Dealkylation of Aryl Alkyl Ethers and Thioethers
New Selective Synthesis of Dithiaboroles as a Viable Pathway to Functionalized Benzenedithiolenes and Their Complexes
作者:Simon H. Schlindwein、Katharina Bader、Carlo Sibold、Wolfgang Frey、Petr Neugebauer、Milan Orlita、Joris van Slageren、Dietrich Gudat
DOI:10.1021/acs.inorgchem.6b00821
日期:2016.6.20
and fully characterized. Subsequent methanolysis, which was carried out either as a separate reaction step or in the manner of a one-pot reaction, gave rise to functionally substituted benzenedithiols. The feasibility of a methylphosphoryl-substituted benzenedithiol to act as a dianionic S,S-chelating ligand was demonstrated with the formation of paramagnetic Ni(III) and Co(III) complexes. Selective reduction
Selective mono-arylation and -alkylation of bis(alkylthio)benzenes
作者:M. Tiecco、L. Testaferri、M. Tingoli、E. Wenkert
DOI:10.1016/s0040-4020(01)91955-6
日期:——
developed by taking advantage of the sensitivity of reactions of Grignard reagents with aryl alkyl sulphides, catalyzed by low-valentnickelspecies, to steric effects. It is shown that the course of these reactions is influenced by the steric requirements of both the aryl and the alkyl moieties of the sulphides. Thus, selective mono-arylation and alkylation of easily available bis(alkylthio)benzenes
of 1(4-) for 2(4-) on nickel (-785 mV for 11 b versus -1130 mV for 14, relative to ferrocene) affects the redox potential to a similar degree as the substitution of nickel for cobalt (-1160 mV for [Co(2)(1)(2)](2-)/[Co(2)(1)(2)](4-), relative to ferrocene). The redox waves display a markedly less reversible behavior for complexes with the shorter bridged ligand 2(4-) compared to those of 1(4-).
Negatively charged metal–organic hosts with cobalt dithiolene species: improving PET processes for light-driven proton reduction through host–guest electrostatic interactions
Negatively charged metal–organic hosts combined with cationic Ru-based photosensitizers by electrostatic interactions to improve PET processes for efficient photocatalytic proton reduction.
Synthesis of novel axially chiral cyclic benzopolysulfides
作者:Ryu Sato、Hidetoshi Ohta、Tatsuya Yamamoto、Shiduko Nakajo、Satoshi Ogawa、Ashraful Alam
DOI:10.1016/j.tetlet.2007.05.117
日期:2007.7
synthesized by sulfurization of dithiastannole. Naphthyl moiety was introduced near the pentathiepin ring by Suzuki–Miyaura cross-coupling reaction. Pentathiepins were found as diastereomeric mixture. Rotational energy barrier for C–C bond was estimated by theoretical calculation. Energy barrier for the inversion of pentathiepin ring was experimentally determined by variable temperature 1H NMR.
通过二硫杂锡的硫化合成了新型的轴向手性苯并五硫平。萘基部分通过Suzuki-Miyaura交叉偶联反应引入到五硫平环附近。发现五肽是非对映异构体混合物。通过理论计算可以估算出C–C键的旋转能垒。通过可变温度1 H NMR实验确定了五硫平环倒置的能垒。