Rapid and Effective Synthesis of Diarylsulfur Diimides from Substituted Anilines and Sulfur Monochloride
作者:Oleg Rakitin、Lidia Konstantinova、Kirill Lysov
DOI:10.1055/s-0032-1318140
日期:——
Abstract A one-pot and effective procedure has been developed for the synthesis of symmetrical diarylsulfur diimides from anilines, sulfur monochloride, and DABCO in good yields (70–90%). A plausible mechanism for this transformation has been proposed. A one-pot and effective procedure has been developed for the synthesis of symmetrical diarylsulfur diimides from anilines, sulfur monochloride, and DABCO
Novel Palladium(II)-Catalyzed Cyclization of Aziridines and Sulfur Diimides
作者:Jin-Ook Baeg、Howard Alper
DOI:10.1021/ja00083a007
日期:1994.2
cyclization reaction of aziridines and sulfurdiimides, in toluene, affording imidazolidinethiones in 52-70% yield. Reaction of an aziridine, labels with 13 C at one of the ring carbons, with a sulfurdiimide resulted in incorporation of the label at the 2- and 5-positions of the imidazolidinethione. Thiazolidinimine formation results from the palladium(II)-catalyzed reaction of an aziridine with phenyl isothiocyanate
双(苯甲腈)二氯化钯是氮丙啶和二亚胺硫在甲苯中环化反应的有效催化剂,以 52-70% 的产率得到咪唑烷硫酮。氮丙啶(在环碳之一上带有 13 C 标记)与二亚胺硫的反应导致在咪唑烷硫酮的 2 位和 5 位引入标记。噻唑烷亚胺的形成是由钯 (II) 催化的氮丙啶与异硫氰酸苯酯的反应产生的
One-electron reduction of di-imidosulphur compounds, S(NR)2, and some complexes of Group 6A metal carbonyl derivatives containing S(NR)2 ligands: studies of the radical products by electron spin resonance spectroscopy
作者:John A. Hunter、Boyd King、W. Edward Lindsell、Margaret A. Neish
DOI:10.1039/dt9800000880
日期:——
Reduction of the di-imidosulphurcompounds, S(NR)2(R = But, Ph, 4-MeC6H4, or 4-O2NC6H4), in 1,2-dimethoxyethane solution with a potassium mirror in vacuo gives fairly stable solutions of the corresponding anion radicals [S(NR)2]– which have been studied by e.s.r. spectroscopy. The frozen-solution e.s.r spectrum of K[S(NBut)2] has also been recorded. Isotropic coupling constants A(14N), A(1H) and, for
在带有钾镜的1,2-二甲氧基乙烷溶液中还原二亚氨基硫化合物S(NR)2(R = Bu t,Ph,4-MeC 6 H 4或4-O 2 NC 6 H 4)在真空中得到相应的阴离子自由基[S(NR)的相当稳定的解决方案2 ] -已经研究了通过ESR光谱。还记录了K [S(NBu t)2 ]的冷冻溶液esr光谱。各向同性耦合常数A(14 N),A(1 H),并且对于R = Bu t,A(33 S)已根据经验的电子密度关系根据自由基的电子结构进行了推导和分析。已经进行了一些CNDO / 2和INDO计算,并对实验和计算出的电子自旋密度进行了比较。可变温度esr测量未提供溶液中阴离子存在不同几何异构体的迹象。模型计算表明,E / E构象最稳定,并且相互转换可以得到E / Z或Z / Z形式是不可能的。在所有情况下的实验证据表明两个氮原子在磁性上是等价的。物种M I [S(NBu t)2 ](M I =
The reaction of diphenylketene-N-phenylimine (1) and diphenylsulfur diimide (2) gave the 2-aminoindole 4 as a major product together with the benzothiatriazepine 3 and the amidine 5.
Non-toxic corrosion-protection pigments based on manganese
申请人:——
公开号:US20040011252A1
公开(公告)日:2004-01-22
Corrosion-inhibiting pigments based on manganese are described that contain a trivalent or tetravalent manganese/valence stabilizer complex. An inorganic or organic material is used to stabilize the trivalent or tetravalent manganese ion to form a compound that is sparingly soluble, exhibits low solubility, or is insoluble in water, depending upon the intended usage. Specific stabilizers are chosen to control the release rate of trivalent or tetravalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Stabilizers may also modify the processing and handling characteristics of the formed powders. Manganese/valence stabilizer combinations are chosen based on the well-founded principles of manganese coordination chemistry. Many manganese-valence stabilizer combinations are presented that can equal the performance of conventional hexavalent chromium or tetravalent lead systems. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.