Copper-promoted N-cyclopropylation of anilines and amines by cyclopropylboronic acid
作者:Sébastien Bénard、Luc Neuville、Jieping Zhu
DOI:10.1039/b925499d
日期:——
Reaction of anilines, primary and secondary aliphatic amines with cyclopropylboronic acid in dichloroethane in the presence of Cu(OAc)(2) (1 equiv.), 2,2'-bipyridine (1 equiv.) and sodium carbonate or sodium bicarbonate (2 equiv.) under air atmosphere afforded the corresponding N-cyclopropyl derivatives in good to excellent yields.
[EN] METHODS FOR INHIBITING NECROPTOSIS<br/>[FR] MÉTHODES POUR INHIBER LA NÉCROPTOSE
申请人:CATALYST THERAPEUTICS PTY LTD
公开号:WO2015172203A1
公开(公告)日:2015-11-19
The present invention relates to methods for inhibiting necroptosis; screening methods for identifying compounds which inhibit necroptosis; and compounds for the inhibition of necroptosis, which may be useful in the treatment of conditions associated with deregulated necroptosis.
Iron‐Mediated Electrophilic Amination of Organozinc Halides using Organic Azides
作者:Simon Graßl、Johannes Singer、Paul Knochel
DOI:10.1002/anie.201911704
日期:2020.1.2
arylated substrates with full retention of configuration. To demonstrate the utility of this reaction, we prepared two amine derivatives of pharmaceutical relevance using this iron-mediated electrophilicamination as the key step.
Dye compositions and methods of dyeing keratin fibers
申请人:Wella Aktiengesellschaft
公开号:US06379400B1
公开(公告)日:2002-04-30
The dye composition has a pH of 3 to 12 and contains water, alcohols and/or mixtures thereof as a solvent; from 0.01 to 10 percent by weight of at least one dye compound of formula (I),
wherein R1 represents hydrogen or a methyl group and Y is an amino group of the formula —NHR2, and R2 is either a cyclopropyl group, a methoxyethyl group or a methoxypropyl group; OR wherein R1 represents hydrogen or a linear or branched alkyl group with 1 to 4 carbon atoms and Y represents a heterocyclic ring of formula (II):
wherein X is a nitrogen atom or an oxygen atom and m is 1, 2 or 3 and n is 0 or 1; and from 0.5 to 30 percent by weight of at least one anionic, cationic, amphoteric and nonionic and/or zwitterionic surface-active substances and/or from 0.1 to 25 percent by weight of at least one thickener and/or from 0.1 to 5 percent by weight of at least one care material. A method of dyeing fibers using the composition is also described.
It Is Not All about the Ligands: Exploring the Hidden Potentials of <i>t</i>Bu<sub>3</sub>P through Its Oxidative Addition Complex as the Precatalyst
作者:Yam N. Timsina、Guolin Xu、Thomas J. Colacot
DOI:10.1021/acscatal.3c01582
日期:2023.6.16
A series of oxidative addition complexes with a general formula (tBu3P)Pd(Ar)X, as a class of precatalysts, were synthesized for challenging Suzuki–Miyaura coupling involving coupling partners, such as (i) sensitive polyfluorinated arylboronic acids or their corresponding boronic esters, (ii) stericallyhindered electrophiles, and (iii) stericallyhindered nucleophiles. A total of 89 examples are reported
合成了一系列具有通式 ( t Bu 3 P)Pd(Ar)X 的氧化加成配合物,作为一类预催化剂,用于挑战涉及偶联伙伴的 Suzuki-Miyaura 偶联,例如 (i) 敏感的多氟芳基硼酸或它们相应的硼酸酯,(ii) 位阻亲电试剂,和 (iii) 位阻亲核试剂。总共报告了 89 个示例,其中 39 个示例在 Supporting Information 中。这些预催化剂,特别是 ( t Bu 3 P)Pd(4-CF 3 Ph)Br,与通过混合t创建的原位系统相比,被证明是通常用于交叉偶联反应的强大催化系统具有钯前体的Bu 3 P 配体。预催化剂也优于其他单配体系统,例如 Buchwald 的基于双芳基的 G3 或 G4 钯环。此外,( t Bu 3 P)Pd(4-CF 3 Ph)Br 预催化剂对于第二个最流行的偶联反应,即 Buchwald-Hartwig 偶联也非常有效。在这项研究中,受