Arylthio-Metal Exchange of α-Arylthioalkanenitriles
摘要:
The addition of BuLi, Bu3MgLi, Et2ZnBuLi, or Me2CuLi to alpha-arylthioalkanenitriles triggers an arylthio-metal exchange. NMR spectroscopic analyses implicate organometallic attack on sulfur forming a three-coordinate sulfidate as the key intermediate. Electrophilic trapping affords tertiary and quaternary nitriles in high yield. The method addresses the challenge of improving the functional group tolerance and preventing polyalkylations.
C-S cross-coupling of aryl halides with alkyl thiols catalyzed by in-situ generated nickel(II) N-heterocyclic carbene complexes
作者:Fang-Jie Guo、Jing Sun、Zhao-Qing Xu、Fritz E. Kühn、Shu-Liang Zang、Ming-Dong Zhou
DOI:10.1016/j.catcom.2017.02.007
日期:2017.6
C-S cross-coupling of aryl halides with alkyl thiols catalyzed by in-situ generated Ni (II) N-heterocyclic carbene (NHC) complexes is investigated. Good to excellent yields can be obtained for a variety of aryl halides when using 5 mol% of the Ni (II)-NHC catalyst and 1.5 eq. of KOtBu. Both the electronic and steric effects of the NHC ligands on the catalytic performance of Ni (II)-NHC, as well as the
Thiolation of Pyridine-2-sulfonamides using Magnesium Thiolates
作者:Benjamin Heinz、Moritz Balkenhohl、Paul Knochel
DOI:10.1055/s-0039-1690199
日期:2019.12
Abstract The thiolation of pyridine-2-sulfonamides using magnesium thiolates is reported. The ortho-functionalizations of these sulfonamides using TMPMgCl·LiCl (TMP = 2,2,6,6-tetramethylpiperidyl) followed by electrophilic quenching produced a range of 3-functionalized pyridine-2-sulfonamides, which were subsequently converted into the corresponding thioethers. Finally, symmetric or asymmetric diorganodisulfides
[EN] COMPOSITION, SYNTHESIS, AND USE OF A NEW CLASS OF ISONITRILES<br/>[FR] COMPOSITION, SYNTHÈSE ET UTILISATION D'UNE NOUVELLE CLASSE D'ISONITRILES
申请人:UNIV HOLY GHOST DUQUESNE
公开号:WO2015127226A1
公开(公告)日:2015-08-27
This invention relates to novel isonitriles, including arylthio isonitriles, and methods for their preparation. The isonitriles include a conjugated ring system. The structure is designed with the flexibility to have multiple substitution patterns. The isonitriles may be used in applications including, but not limited to, pharmaceutical compositions.
Synthesis and Structural Characterization of Molybdenum(VI) and Iron(II) Coordination Compounds with <i>S</i>-Alkyl-<i>N</i>-methyl-<i>S</i>-(2-pyridyl)sulfoximines and Catalytic Epoxidation Activity of the Molybdenum Complexes
作者:Yvonne Brussaard、Falk Olbrich、Ernst Schaumann
DOI:10.1021/ic4020306
日期:2013.11.18
Coordination compounds oxido(diperoxido)(S-butyl-N-methyl-S-(2-pyridyl)sulfoximine)molybdenum(VI), [MoO(O2)2SO(NMe)nBu(NC5H4)}] (5c), and bis(dichlorido)(N,S-dimethyl-2-pyridylsulfoximine)iron(II)}, tetrahydrofuran solvate (1:1) (6), [FeCl2SO(NMe)Me(NC5H4)}]2·THF are prepared from the free ligand 4 and molybdenum(VI) oxidediperoxide(dihydrate) and iron dichloride, respectively. The crystal structures
配位化合物氧化(双过氧化物)(S-丁基-N-甲基-S-(2-吡啶基)亚磺酰亚胺)钼(VI),[MoO(O 2)2 SO(NMe)n Bu(NC 5 H 4)} ](5c)和双(dichlorido)(N,S-二甲基-2-吡啶硫磺酰亚胺)铁(II)},四氢呋喃溶剂化物(1:1)(6),[FeCl 2 SO(NMe)Me(NC)5 H 4)}] 2 ·THF由游离配体4制备分别是二氧化二过氧化钼和二氯化铁。晶体结构揭示了与吡啶环和上钼呈反式排列的单个氧的三角双锥5C和μ的平面2 -Cl 2的Fe 2环与反式取向环外的Cl原子为6,而N个的结构中, N-配位配体几乎不受金属影响。配位化合物(5)有效地催化叔丁基氢过氧化物的环辛烯或单取代烯烃的环氧化。