环庚三烯酮 在
haematoporphyrin IX 、 氧气 、 sodium hydride 作用下,
以
various solvent(s) 为溶剂,
生成 5-tetradecyloxytropolone
参考文献:
名称:
New metallomesogens core. New copper complexes with calamitic mesophases using tropolone based ligands. Crystal structure of bis(5-octyloxytropolonato)copper
Frontier-controlled cycloaddition reactions of cyclopentadienones having electron-donating or -attracting substituents: configuration of adducts and kinetic studies
作者:Masato Mori、Ayako Hayamizu、Ken Kanematsu
DOI:10.1039/p19810001259
日期:——
inverse electrondemand. By contrast, in the correlation for the cycloaddition of (1b) with (2a–h), two lines with markedly different slopes were observed, which can be ascribed to a Diels–Alderreaction with neutralelectrondemand. The initial cycloadditions of (1a) and (1b) with tropone (29) gave the [4 + 6]π adducts (32a,b). Subsequently the adduct (32b) underwent oxy-Cope rearrangement to (35). The
2,5-二甲氧基羰基-和2,5-二乙基-3,4-二苯基环戊二烯酮[CPC(1a)和EPC(1b)]与对位取代的苯乙烯(2a–h)的环加成反应产生的主要加合物的立体化学证实降冰片二烯(7),降冰片烯(8),1,4-二氢-1,4-环氧萘(9),马来酸酐(10)和N-苯基马来酰亚胺(11)具有内构型。为了定义取代基对Diels-Alder反应速率的影响,对(1a,b)与一系列苯乙烯(2a-h)的反应性进行了动力学研究。(1a)与(2a–h)的环加成的对数k / k H值与冈本布朗的σp +相关常数和ρ值为–0.941。该结果表明,环加成反应被归类为具有反电子需求的Diels-Alder反应。相比之下,在(1b)与(2a–h)的环加成反应的相关性中,观察到两条斜率明显不同的线,这可以归因于具有中性电子需求的Diels–Alder反应。(1a)和(1b)与对苯二酚(29)的初始环加成反应产生[4 +
Aromatic Cation Activation: Nucleophilic Substitution of Alcohols and Carboxylic Acids
作者:Thanh V. Nguyen、Alp Bekensir
DOI:10.1021/ol5003972
日期:2014.3.21
A new method for the nucleophilicsubstitution of alcohols and carboxylic acids using aromatic tropylium cation activation has been developed. This article reports the use of chloro tropylium chloride for the rapid generation of alkyl halides and acyl chlorides under very mild reaction conditions. It demonstrates, for the first time, the synthetic potential of tropylium cations in promoting chemical
[8+2] Formal Cycloaddition Reactions of Tropones with Azlactones under Brønsted Acid Catalysis and Synthesis of α-(2-Tropyl), α-Alkyl α-Amino Acids
作者:Francisco Esteban、Ricardo Alfaro、Francisco Yuste、Alejandro Parra、José Luis García Ruano、José Alemán
DOI:10.1002/ejoc.201301774
日期:2014.3
The reaction of tropones with azlactones catalyzed by Bronsted acids affords a variety of dihydro-2H-cyclohepta[b]furan derivatives, corresponding to a formal [8+2] cycloaddition process. They can easily be opened by nucleophiles to afford a new type of α,α-disubstituted α-amino acid (or peptide) containing seven-membered rings at the quaternary position.
[EN] METHOD OF CONVERTING ALCOHOL TO HALIDE<br/>[FR] PROCÉDÉ DE CONVERSION D'UN ALCOOL EN HALOGÉNURE
申请人:UNIV SAARLAND
公开号:WO2016202894A1
公开(公告)日:2016-12-22
The present invention relates to a method of converting an alcohol into a corresponding halide. This method comprises reacting the alcohol with an optionally substituted aromatic carboxylic acid halide in presence of an N-substituted formamide to replace a hydroxyl group of the alcohol by a halogen atom. The present invention also relates to a method of converting an alcohol into a corresponding substitution product. The second method comprises: (a) performing the method of the invention of converting an alcohol into the corresponding halide; and (b) reacting the corresponding halide with a nucleophile to convert the halide into the nucleophilic substitution product.
TEMOZOLOMIDE COMPOUNDS, POLYMERS PREPARED THEREFROM, AND METHOD OF TREATING A DISEASE
申请人:The University of Massachusetts
公开号:US20180079754A1
公开(公告)日:2018-03-22
A temozolomide compound according to formula (I)
is described, wherein R
1
, L
1
, and X are defined herein. The temozolomide compound can be used to prepare polymers comprising temozolomide. Additionally, the polymers comprising temozolomide can be particularly useful in the treatment of certain diseases.