Ringerweiterung von 1,2-Thiazol-3(2<i>H</i>)-on-1,1-dioxiden und 3-Amino-2<i>H</i>-azirinen zu 4<i>H</i>-1,2,5-Thiadiazocin-6-on-1,1-dioxiden
作者:Annette Rahm、Anthony Linden、Beverly R. Vincent、Heinz Heimgartner、Manfred Mühlstädt、Bärbel Schulze
DOI:10.1002/hlca.19910740511
日期:1991.8.7
Ring Enlargement of 1,2-Thiazol-3(2H)-one-1,1-dioxides and 3-Amino-2H-azirines to 4H-1,2,5-Thiadiazocin-6-one-1,1-dioxides
1,2-噻唑-3(2 H)-one-1,1- dioxides和3-Amino-2 H -azirines的环扩大至4 H -1,2,5 - Thiadiazocin -6-one-1,1 -二氧化物
Cyclic and acyclic sulfonimides in reactions with Rh(ii)-ketocarbenoids: a new access to chemoselective O-functionalization of the imidic carbonyl groups
diazomalonic, and diazoacetic esters using dirhodiumtetraacetate in the presence of isothiazol-3(2H)-one 1,1-dioxides and a number of N-(arenesulfonyl)carboxamides in solutions of methylene chloride or dichloroethane gives rise to O-alkylation of the imidic carbonyl groups by Rh(II)-carbenoids and the formation of O-alkylimidates as the final products. The reaction proceeds with high chemoselectivity via
Triphenyltin derivatives of isothiazol-3(2H)-one 1,1-dioxides. Synthesis, Mössbauer spectra, some fungitoxicity data, and crystal structure of triphenylstannyl 1,2-benziosthiazol-3-(2H)-one 1,1-dioxide·N,N-dimethylformamide
The syntheses and tin-119m Mössbauer spectroscopic data are reported for two series of stannylimides, 2-triphenylstannyl 1,2-benziosithiazol-3(2H)-one 1,1-dioxide·L (L = O-donor ligand) and 2-triphenylstannyl 4,5-substituted isothiazol-3(2H)-one1,1-dioxides, and for the stannylester, triphenyltin 1,2-benzisothiazol-3(2H-onyl-2-acetate 1,1-dioxide. The observed quadrupole splitting (QS) values (3.12–3
报告了两个系列苯乙烯的合成和119mMössbauer锡的光谱数据:2-三苯基锡烷基1,2-苯并噻吩并恶唑-3(2 H)-一个1,1-二氧化物·L(L = O-供体配体)和2 -三苯基锡烷基4,5-取代的异噻唑-3(2 H)-1,1-二氧化物,对于甲壳甾类,三苯基锡1,2-苯并噻唑-3(2 H-壬基-2-乙酸酯1,1-二氧化物)。所观察到的四极分裂(QS)的值(3.12-3.25毫米小号-1)解释在以下方面反式-C 3 SnNo三角双锥为(C结构6 ħ 5)3 Sn的Ô 2 ·L [L =(C 6 H5)2 C 2 CO,(CH 3)2 NCHO,C 9 H 7 NO,(C 6 H 5 CH 2)2 SO,(C 6 H 5 3 PO,(C 6 H 5)3 AsO]加合物。N,N-二甲基甲酰胺加合物的晶体结构测定证实了Mössbauer的归属。碳[Sn-C 2.120(4),2.120(5),2
Copper-catalyzed arenes amination with saccharins
作者:Kai Sun、Yan Li、Qian Zhang
DOI:10.1007/s11426-015-5385-y
日期:2015.8
A novel copper-catalyzed direct C-N formation reaction of simplearenes with cheap and pharmacological saccharin derivatives under relatively mild conditions was developed with arenes as limiting reagents. This work provided a new method for oxidativecoupling of aromatic C(sp2)-H bonds and N-H bonds.