Neutral Sulfur Nucleophiles: Synthesis of Thioethers and Thioesters by Substitution Reactions of N-Heterocyclic Carbene Boryl Sulfides and Thioamides
作者:Xiangcheng Pan、Dennis P. Curran
DOI:10.1021/ol5010164
日期:2014.5.16
Newly discovered boryl sulfides and N-borylthioamides are shown to serve as neutral sources of sulfur nucleophiles in substitutionsreactions. For example, heating of diMe-Imd-BH(SPh)2 with benzyl bromides, primary bromides, or acid chlorides provides the corresponding thioethers or thioesters in high yields. Likewise, N-phenyltetrazole thioethers/esters are made from a readily available N-borylthionotetrazole
Reactivity of di(azido)bis(phosphine) complexes of Ni(ii), Pd(ii) and Pt(ii) toward organic isothiocyanates: synthesis, structures, and properties of bis(tetrazole-thiolato) and bis(isothiocyanato) complexes
作者:Yong-Joo Kim、Jin-Taek Han、Seok Kang、Won Seok Han、Soon W. Lee
DOI:10.1039/b305341p
日期:——
Di(azido)bis(phosphine) complexes of Group 10 metals M(N3)2(PR3)2} underwent substitution with trimethylsilyl isothiocyanate (Me3Si–NCS) to give the corresponding bis(isothiocyanato) complexes, M(NCS)2L2 (M = Pd, L = PMe3 (1), PEt3 (2), PMe2Ph (3); M = Ni, L = PMe3 (4); M = Pt, L = PEt3 (5)), in which the isothiocyanato ligand is N-bound to the metal. By contrast, the bis(azido) complexes of Pd(II) and
第10组金属M(N 3)2(PR 3)2 }的二(叠氮基)双(膦)配合物用取代三甲基甲硅烷基异硫氰酸酯(ME 3的Si-NCS),得到相应的双(异硫氰基)配合物,M(NCS)2大号2(M =钯,L = PME 3 (1),PET 3 (2),PME 2 Ph(上3); M = Ni,L = PMe 3 (4); M = Pt,L = PEt 3 (5)),其中异硫氰酸根 配体与金属N结合。相比之下,Pd(II)和Pt(II)的双(叠氮基)配合物与有机物进行1,3-环加成反应异硫氰酸酯(R–NCS)得到含四唑的硫醇基配合物,M S [CN 4(R)]} 2 L 2 (M = Pd,L = PMe 3,R =烯丙基(6),苄基(7),乙基(8),苯基(9),2,6-二甲基苯基(10);L = PMe 2 Ph,R =苯基(11); L = PEt 3,R = 2,6-二甲基苯基(12);m