Results 141 to 150 of about 266,703 (209)

ChemInform Abstract: Synthesis of 2‐Arylethylamines by the Curtius Rearrangement. [PDF]

ChemInform, 2010
AbstractNovel chemical syntheses of amphetamines (V), (VIII) and (XV) as well as wescaline (XI) using the Curtius rearrangement as key reaction are developed.
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Improved Preparation of Tyramine by Curtius Rearrangement

Chinese Journal of Chemistry, 2009
AbstractAn improved and facile preparation of tyramine [2‐(p‐hydroxyphenyl)ethylamine] was described, which starts from phenol and acrylonitrile to form β‐(p‐hydroxyphenyl) propionic acid via Friedel‐Craft's alkylation and nitrile hydrolysis. After hydrazinolysis and a subsequent Curtius rearrangement, tyramine was obtained in 30.2% total yield.
Li-Xin Wang, Shiyin Pan, Xiaoying Xu, Fan Yang, Chuanqin Xia, Yun Li   +5 more
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Catalyst-Free Cyclization- and Curtius Rearrangement-Induced Functional Group Transformation: An Improved Synthetic Strategy of First-in-Class ATX Inhibitor Ziritaxestat (GLPG-1690)

, 2020
A practical and highly efficient protocol for the production of Autotaxin (ATX) inhibitor Ziritaxestat (1) was described.
Hongrui Lei, Yu Yang, Changtao Li, Fang Jia, Nan Jiang, P. Gong, X. Zhai   +6 more
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Curtius-type rearrangement of a sulphonyl azide

Journal of the Chemical Society D: Chemical Communications, 1969
Six products have been identified from the thermolysis of mesitylene-2-sulphonyl azide in dodecane: two are derived from a Curtius-type rearrangement of the corresponding sulphonyl nitrene.
Rudolph A. Abramovitch, W. D. Holcomb
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ChemInform Abstract: Synthesis of (‐)‐Oseltamivir by Using a Microreactor in the Curtius Rearrangement.

ChemInform, 2011
AbstractThe method avoids the isolation of the potentially hazardous azide intermediate and can be scaled up as an industrial process.
Bojan P. Bondzic, Hayato Ishikawa, Hayato Ishikawa, Yujiro Hayashi   +3 more
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ChemInform Abstract: The Use of Curtius Rearrangement in the Synthesis of 4‐Aminothiazolidines.

ChemInform, 1999
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Edson R. Costenaro, Mara Elisa Fortes Braibante, Hugo T. S. Braibante   +2 more
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Curtius-Type Rearrangement of Sulfinyl Azides: A Matrix Isolation and Computational Study.

Journal of Physical Chemistry A, 2022
The highly unstable methyl sulfinyl azide, CH3S(O)N3, has been synthesized and characterized for the first time. In the gas phase, CH3S(O)N3 decomposes quickly at room temperature (300 K) with an estimated half-life (t1/2) of 7 min.
Zhuang Wu, Xiaoqing Zeng
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Direct Conversion of Carboxylic Acids to Various Nitrogen Containing Compounds in One-Pot Exploiting Curtius Rearrangement.

Journal of Organic Chemistry, 2019
Herein we report, a single pot multi-step conversion of inactivated carboxylic acids to various N-containing compounds using a common synthetic methodology, involving diphenyl phosphinic chloride as an activator and sodium azide as a source of nitrogen ...
Arun Kumar, Naveen Kumar, Ritika Sharma, G. Bhargava, Dinesh Mahajan   +4 more
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The curtius rearrangement of isomeric cycloheptatrienecarboxylic and norcaradienecarboxylic acids

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1957
1. The Curtius rearrangement in isomeric β- and γ-cycloheptatrienecarboxylic acids and norcaradlenecarboxylic acid was studied. It was shown that rearrangement goes without isomerization of the migrating hydrocarbon radical under the conditions employed. 2.
I. S. Akhrem, D. N. Kursanov, I. Ya. Kachkurova, M. E. Vol'pin   +3 more
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An Improved Synthesis of Urea Derivatives from N-Acylbenzotriazole via Curtius Rearrangement

Synthesis, 2019
The good leaving tendency of the benzotriazole moiety has been exploited for the synthesis of symmetric, unsymmetric, N-acyl, and cyclic ureas in good yields from N-acylbenzotriazoles by treating the latter with various amines in the presence of TMSN3 ...
A. Singh, A. Agrahari, Sumit Kumar Singh, M. S. Yadav, V. Tiwari   +4 more
semanticscholar   +1 more source