Substituted 1,3,2,4-benzodithiadiazines: Novel derivatives, by-products, and intermediates
作者:Alexander Yu. Makarov、Irina Yu. Bagryanskaya、Yuri V. Gatilov、Tatiana V. Mikhalina、Makhmut M. Shakirov、Lyudmila N. Shchegoleva、Andrey V. Zibarev
DOI:10.1002/hc.1087
日期:——
intermediate is complicated by further reaction of 1 with SCl2 to give Herzsalts 3. With the 2:SCl2 ratio of 2:1, the formation of by-products 3 is reduced and novel compounds 1 are accessible. With ortho-I containing starting material 2j, the parent compound 1s is obtained as the result of an unex- pected I, not H, substitution. The rate of the 1C SCl2 reaction depends upon a substituent's position
标题化合物 1 通过 Ar NSN SiMe3 2 与 SCl2 的 1:1 缩合,然后每个 (Ar NSNS Cl) 中间体的分子内邻位环化,通过 1 与 SCl2 进一步反应得到赫兹盐 3,使合成复杂化。2:SCl2 比例为2:1,减少了副产物 3 的形成,并且可以获得新的化合物 1。对于含有邻位 I 的起始材料 2j,由于意外的 I 取代而不是 H 取代,获得了母体化合物 1s。1C SCl2 反应的速率取决于取代基的位置,由于对 SCl2 的反应性降低,次要 8-R 异构体 1l,p (RD Br, I) 首次从与主要 6-R 异构体的混合物中分离出来. 合成的化合物1-3通过多核(包括氮)核磁共振和X射线晶体学表征。
Synthesis of 1,1′-diacetylferrocene imines via catalytic oxo/imido heterometathesis
作者:Andrey V. Pichugov、Nikolai S. Bushkov、Liudmila V. Erkhova、Pavel A. Zhizhko、Svetlana Ch. Gagieva、Dmitry N. Zarubin、Nikolai A. Ustynyuk、Dmitry A. Lemenovskii、Haojie Yu、Li Wang
DOI:10.1016/j.jorganchem.2019.01.018
日期:2019.5
A novel CN bond forming strategy based on oxo/imido heterometathesis between N-sulfinylamines and ketones, catalyzed by a well-defined silica-supported Ti imido complex, was applied to prepare a series of hardly accessible 1,1’-diacetylferrocene ketimines.
Photoredox Alkylation of Sulfinylamine Enables the Synthesis of Highly Functionalized Sulfinamides and S(VI) Derivatives
作者:Ling Li、Shi-qi Zhang、Yue Chen、Xin Cui、Gang Zhao、Zhuo Tang、Guang-xun Li
DOI:10.1021/acscatal.2c05169
日期:2022.12.16
Sulfinamides have widespread applications in organic synthesis, especially for the preparation of S(VI) derivatives such as sulfonimidamide and sulfonimidate ester. The previous methods for the preparation of these compounds are restricted to an aryl substituent or Grignard reagent with limited functional groups. Here, we disclosed a photocatalyzed approach for obtaining these compounds with high functionalization
亚磺酰胺在有机合成中有着广泛的应用,特别是用于制备磺酰亚胺和磺酰亚胺酯等S(VI)衍生物。以前制备这些化合物的方法仅限于芳基取代基或具有有限官能团的格氏试剂。在这里,我们公开了一种获得这些具有高官能化水平的化合物的光催化方法。易于获得的 1,4-二氢吡啶,可提供以 C sp 3为中心的烷基自由基,与易于获得的N顺利反应-亚磺酰胺以良好的产率生产相应的亚磺酰胺。此外,通过在一锅中连续添加卤素试剂和N-或O-中心的亲核试剂,可以将产生的亚磺酰胺转化为相应的磺酰亚胺和磺酰亚胺酯。该方法不仅可以实现克级亚磺胺类药物的制备,而且保证了一系列药物或天然产物的后修饰。
Synthesis of sulfinamides <i>via</i> photocatalytic alkylation or arylation of sulfinylamine
作者:Ming Yan、Si-fan Wang、Yong-po Zhang、Jin-zhong Zhao、Zhuo Tang、Guang-xun Li
DOI:10.1039/d3ob01782f
日期:——
Sulfinamides are a versatile class of compounds that find applications in both organic synthesis and pharmaceuticals. Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. Commercially available potassiumtrifluoro(organo)borates and readily available sulfinyl amines are rationally used and converted to a series of alkyl or aryl sulfinamides in moderate to high
Iron-Catalyzed Photochemical Synthesis of Sulfinamides from Aliphatic Hydrocarbons and Sulfinylamines
作者:Guang-Da Xia、Run Li、Long Zhang、Yi Wei、Xiao-Qiang Hu
DOI:10.1021/acs.orglett.4c00612
日期:——
An iron-catalyzed photochemical sulfinamidation of hydrocarbons with N-sulfinylamines has been developed. The merger of ligand-to-metal charge transfer (LMCT) of FeCl3 with hydrogen atom transfer (HAT) process is the key for the generation of alkyl radicals from hydrocarbons, and the resultant alkyl radicals were readily trapped by N-sulfinylamines to produce structurally diverse sulfinamides. Contrary