报道了一种由宝石-二溴乙烯基和磺酰胺合成吡咯并//吲哚并[1,2- a ]喹啉和萘并[2,1- b ]噻吩的高效简单途径。该报告的值得注意的特点是该方法涉及两步协议,即通过一锅法通过Cu(I)催化的乙酰胺的形成,然后由Ag(I)辅助的分子内合成三环和四环杂环。氢芳基化。还研究了在固态和溶液态的吡咯并-和吲哚并[1,2- a ]喹啉的代表性实例的光物理性质。
Organic Ligand-Free Alkylation of Amines, Carboxamides, Sulfonamides, and Ketones by Using Alcohols Catalyzed by Heterogeneous Ag/Mo Oxides
作者:Xinjiang Cui、Yan Zhang、Feng Shi、Youquan Deng
DOI:10.1002/chem.201001915
日期:2011.1.17
that is, amines, carboxamides, sulfonamides, and ketones, were successfully synthesized through a borrowing‐hydrogen mechanism. Up to 99 % isolated yields were obtained under relatively mild conditions without additive organic ligand. The catalytic process shows promise for the efficient and economic synthesis of amine, carboxamide, sulfonamide, and ketone derivatives because of the simplicity of the
复杂且昂贵的有机配体通常在制备或工业水平的精细化学合成中必不可少。通过使用不具有添加剂有机配体的非均相催化剂体系来合成精细化学品是非常合乎需要的,但由于它们的通用性差和严格的反应条件而受到严格限制。在这里,我们显示了具有特定Ag 6 Mo 10 O 33的Ag / Mo杂化材料催化形成碳-氮或碳-碳键的结果晶体结构。通过借氢机制成功合成了48种含氮或氧的化合物,即胺,羧酰胺,磺酰胺和酮。在没有添加剂有机配体的条件下,在相对温和的条件下可获得高达99%的分离产率。催化过程显示出胺,羧酰胺,磺酰胺和酮衍生物的高效经济合成的希望,因为该系统简单且易于操作。
Solid phase synthesis of sulfonamides using a carbamate linker
作者:B. Raju、Timothy P. Kogan
DOI:10.1016/s0040-4039(97)00652-7
日期:1997.5
A method for the synthesis of sulfonamides on a solid support by immobilizing amines through the nitrogen atom using a carbamate linkage is described.
Nickel/Photoredox Dual Catalytic Cross-Coupling of Alkyl and Amidyl Radicals to Construct C(sp<sup>3</sup>)–N Bonds
作者:Shaofang Zhou、Kang Lv、Rui Fu、Changlei Zhu、Xiaoguang Bao
DOI:10.1021/acscatal.1c00731
日期:2021.5.7
The construction of C(sp3)–N bonds via direct radical–radical cross-coupling under benign conditions is a desirable but challenging approach. Herein, the cross-coupling of alkyl and amidyl radicals to build aliphatic C–N bonds in a concise, mild, and oxidant-free manner is implemented by nickel/photoredox dual catalysis. In this protocol, the single electron transfer strategy is successfully employed
在良性条件下通过直接自由基-自由基交叉偶联来构建C(sp 3)-N键是一种理想但具有挑战性的方法。在此,通过镍/光氧化还原双重催化,以简明,温和且无氧化剂的方式将烷基和and基自由基交叉偶联以建立脂族C–N键。在该协议中,成功地采用了单电子转移策略,分别从磺酰基叠氮化物/叠氮基甲酸酯和烷基三氟硼酸酯生成N-和C-中心的自由基。然而,光催化剂诱导的三重态-三重态能量转移机制可能不适用于该反应。激发的光催化剂(Ru II / * Ru II / Ru III / Ru II的氧化猝灭途径))结合可能的Ni I / Ni II / Ni III / Ni I催化循环,基于协同实验和计算研究,提出了镍/光氧化还原双催化C(sp 3)–N键形成的方法。
Metal-free I<sub>2</sub>O<sub>5</sub>-mediated direct construction of sulfonamides from thiols and amines
作者:Minghui Zhu、Wei Wei、Daoshan Yang、Huanhuan Cui、Leilei Wang、Guoqing Meng、Hua Wang
DOI:10.1039/c7ob00668c
日期:——
A simple and convenient method has been developed for the construction of sulfonamides via I2O5-mediated sulfonylation of amines with arylthiols. The present protocol provides an attractive approach to sulfonamides in moderate to good yields from readily accessible and easy to handle starting materials under mild and metal-free conditions.