通过由吡唑啉酮衍生的递归阴离子介导的碱介导的,一锅,无金属,正交捆扎(束缚),由多种邻卤代芳基炔酮和β-溴烯基炔酮组装而成了一类新型的螺旋形吡唑啉酮支架。这些方便,可用于制备的转化过程可通过串联的迈克尔加成-分子内S N Ar反应或串联的迈克尔加成-分子内Ad N E过程进行,以从易于获得的前体中提供多种药效学,多样的,螺旋形的吡唑啉酮。
(β-<scp>D</scp>-Ribofuranosyl)formamidine in the Design and Synthesis of 2-(β-<scp>D</scp>-Ribofuranosyl)pyrimidines, Including R<sup>F</sup>-Containing Derivatives
作者:Viktor O. Iaroshenko、Sergii Dudkin、Vyacheslav Ya. Sosnovskikh、Alexander Villinger、Peter Langer
DOI:10.1002/ejoc.201300107
日期:2013.5
A wide range of novel 2-(β-D-ribofuranosyl)pyrimidines, including RF-containing derivatives, have been synthesized by the reaction of (β-D-ribofuranosyl)formamidine with various dielectrophilic substrates such as 3-alkoxy- and 3-chloro-1-(polyfluoroalkyl)propen-1-ones, 3-nitro- and 3-(phenylethynyl)chromones and heteroaryl acetylenic ketones.
Efficient [5 + 1]-strategy for the assembly of 1,8-naphthyridin-4(1H)-ones by domino amination/conjugate addition reactions of 1-(2-chloropyridin-3-yl)prop-2-yn-1-ones with amines
作者:Viktor O. Iaroshenko、Ingo Knepper、Muhammad Zahid、Rene Kuzora、Sergii Dudkin、Alexander Villinger、Peter Langer
DOI:10.1039/c2ob07030h
日期:——
A facile synthetic approach for the synthesis of 1,8-naphthyridine-4(1H)-one derivatives via a catalyst free and Pd-supported tandem amination sequence is developed and described. In a case of aliphatic amines reaction proceeds in a catalyst free mode, however anilines demand Pd-supported reaction conditions.
“Back‐to‐Front” Type Synthesis of Polyfunctionalized Indazoles: Nitromethane Mediated, Domino Benzannulation of o‐Chloropyrazolyl Ynones
作者:Mallesh Beesu、Goverdhan Mehta
DOI:10.1002/adsc.202100170
日期:2021.6.8
A one-pot domino benzannulation protocol involving strapping of o-chloropyrazolyl ynones with various nitromethane derivatives has been devised as a entry to diversely functionalized indazole frameworks. These preparatively useful transformations proceed via tandem Michael addition-intramolecular SNAr reaction pathway to efficiently furnish a range of functionally enriched indazoles with bioactivity
涉及将邻氯吡唑炔酮与各种硝基甲烷衍生物捆绑在一起的一锅多米诺苯环化方案已被设计为多样化功能化吲唑框架的入口。这些有用的转化通过串联迈克尔加成-分子内 S N Ar 反应途径进行,以从容易获得的前体有效地提供一系列功能丰富的具有生物活性潜力的吲唑。
Orthogonal Strapping of <i>o</i>-Haloaryl Ynones with Pyrazolones: A One-Pot, Domino Process toward Spiropyrazolones
作者:Mallesh Beesu、Goverdhan Mehta
DOI:10.1021/acs.joc.0c02087
日期:2020.11.6
assembled from diverse o-haloaryl ynones and β-bromoalkenyl ynones via base mediated, one-pot, metal free, orthogonal strapping (tethering) mediated by the recursive anion(s) derived from pyrazolones. These convenient, preparatively useful transformations proceed through either a tandem Michael addition–intramolecular SNArreaction or a tandem Michael addition–intramolecular AdNE process to furnish
通过由吡唑啉酮衍生的递归阴离子介导的碱介导的,一锅,无金属,正交捆扎(束缚),由多种邻卤代芳基炔酮和β-溴烯基炔酮组装而成了一类新型的螺旋形吡唑啉酮支架。这些方便,可用于制备的转化过程可通过串联的迈克尔加成-分子内S N Ar反应或串联的迈克尔加成-分子内Ad N E过程进行,以从易于获得的前体中提供多种药效学,多样的,螺旋形的吡唑啉酮。