Synthesis and Antitumor Activity of Novel Pyrimidinyl Pyrazole Derivatives. III. Synthesis and Antitumor Activity of 3-Phenylpiperazinyl-1-trans-propenes
Reaction between 2-amino-2-deoxy-D-glucose and 2,4-pentanedione
作者:F.García González、A.Gómez Sánchez、M.I.Gon̄i De Rey
DOI:10.1016/s0008-6215(00)81756-5
日期:1965.12
- D -glucose (II). The structure of compound (I) is demonstrated and its properties described. The pyrrole (I) is also a product of the reaction at pH 9–10, and its possible role as a chromogen in the Elson—Morgan method for the estimation of 2-amino-2-deoxy- D -glucose is discussed. Directions for the preparation of compound (II) are given, and its structure and properties studied. Reaction between
Synthesis of 2-Alkylidenepyrrolidines, Pyrroles, and Indoles by Condensation of Silyl Enol Ethers and 1,3-Bis-Silyl Enol Ethers with 1-Azido-2,2-dimethoxyethane and Subsequent Reductive Cyclization
作者:Esen Bellur、Helmar Görls、Peter Langer
DOI:10.1021/jo047856x
日期:2005.6.1
The condensation of 1,3-bis-silylenolethers with 1-azido-2,2-dimethoxyethane and subsequent reductive cyclization allowed an efficient regio- and diastereoselective synthesis of a variety of 2-alkylidene-4-methoxypyrrolidines. The thermal elimination of methanol resulted in the formation of functionalized pyrroles. Similarly, 2,3,3a,4,5,6-hexahydro-2,3-benzopyrroles were prepared and transformed
rboxamides were prepared starting from enamines and Weinreb α-aminoamides. Their reaction with oganometallic compounds and subsequent cyclization constitute a versatile alternative in the Knorrpyrrolesynthesis.
Synthesis of 3-Acylpyrroles, 3-(Alkoxycarbonyl)pyrroles, 1,5,6,7-Tetrahydro-4H-indol-4-ones and 3-Benzoylpyridines Based on Staudinger-Aza-Wittig Reactions of 1,3-Dicarbonyl Compounds with 2- and 3-Azido-1,1-dialkoxyalkanes
The Staudinger-aza-Wittig reaction of 1,3-dicarbonyl compounds with 2-azido-1,1-diethoxyethane and subsequent cyclization allowed an efficient synthesis of a variety of pyrroles, 1,5,6,7-tetrahydro-4H-indol-4-ones, and of a pyridine. cyclization - N-heterocycles - pyrroles - azides
Palladium-Catalyzed Direct CH Alkylation of Electron-Deficient Pyrrole Derivatives
作者:Lei Jiao、Thorsten Bach
DOI:10.1002/anie.201301154
日期:2013.6.3
What looks like a Friedel–Crafts alkylation reaction of electron‐deficient pyrroles is actually a PdII‐catalyzed, norbornene‐mediated CH activation reaction, in which the alkylation of the pyrrole core occurs by reductive elimination. As well as ethyl‐1H‐pyrrole‐2‐carboxylate (see scheme), several other 2,3‐disubstituted pyrroles underwent the selective C5 alkylation in good yield.
表观和实际:什么样子缺电子吡咯弗里德尔-克拉夫茨烷基化反应实际上是钯II催化的,降冰片烯体介导C ħ活化反应,其中,所述吡咯核的烷基化通过还原消除发生。除1 H H-吡咯2-羧酸乙酯(参见方案)外,其他几种2,3-二取代的吡咯也进行了选择性C5烷基化,收率很高。