Results 151 to 160 of about 266,703 (209)

Decomposition of Sulfonyl Azide Isocyanate and Sulfonyl Diazide: The Oxygen-Shifted Curtius Rearrangement via Sulfonyl Nitrenes.

Journal of Physical Chemistry A, 2018
Sulfonyl azide isocyanate, (OCN)S(O)2N3, was prepared and characterized by IR (gas, matrix-isolation), Raman (liquid), and UV-vis spectroscopy. Upon flash vacuum pyrolysis (FVP) at ca.
Xuelin Dong, Guohai Deng, Jian Xu, Hongmin Li, Xiaoqing Zeng   +4 more
semanticscholar   +1 more source

Density Functional Study of the Reaction Pathways of the Decomposition of Azidoborane: A Curtius-type Rearrangement

Research journal of chemistry and environment, 2021
Density functional study is used for the decomposition of azidoborane and the possibility of borylnitrene being an intermediate in the formation of iminoborane both in the singlet and triplet state.
R. Parashar, Sunita Bansal
semanticscholar   +1 more source

Contrasting Photolytic and Thermal Decomposition of Phenyl Azidoformate: The Curtius Rearrangement Versus Intramolecular C-H Amination.

Journal of Physical Chemistry A, 2017
The decomposition of phenyl azidoformate, PhOC(O)N3, was studied by combining matrix isolation spectroscopy and quantum chemical calculations. Upon UV laser photolysis (193 and 266 nm), the azide isolated in cryogenic noble gas matrices (Ne and Ar, 2.8 K)
Huabin Wan, Jian Xu, Qian Liu, Hongmin Li, Yan Lu, M. Abe, Xiaoqing Zeng   +6 more
semanticscholar   +1 more source

Development of a concise, scalable synthesis of a CCR1 antagonist utilizing a continuous flow Curtius rearrangement

, 2017
A convergent, robust, and concise synthesis of a developmental CCR1 antagonist is described using continuous flow technology. In the first approach, following an expeditious SNAr sequence for cyclopropane introduction, a safe, continuous flow Curtius ...
Maurice A. Marsini, F. Buono, Jon C. Lorenz, Bing-Shiou Yang, J. Reeves, K. Sidhu, Max Sarvestani, Zhulin Tan, Yongda Zhang, Ning Li, Heewon Lee, Jason Brazzillo, L. Nummy, J. C. Chung, Irungu K. Luvaga, B. Narayanan, Xudong Wei, Jinhua J. Song, F. Roschangar, N. Yee, C. Senanayake   +20 more
semanticscholar   +1 more source

The Curtius Rearrangement of Azidocarbonylfuroxans: Some Peculiarities and the Synthesis of Aminofuroxans

Mendeleev Communications, 1995
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.
Igor V. Ovchinnikov, Alexander N. Blinnikov, Nina N. Makhova, Lenor I. Khmel’nitskii   +3 more
openaire   +3 more sources

Quaternized α,α'-Amino Acids via Curtius Rearrangement of Substituted Malonate-Imidazolidinones.

Journal of Organic Chemistry, 2017
An efficient synthesis protocol is presented for accessing quaternized α-amino acids in chiral, nonracemic form via diastereoselective malonate alkylation followed by C- to N-transposition. The key stereodifferentiating step involves a diastereoselective
Maheswara Rao Gokada, R. Hunter, A. Andrijević, Wade F. Petersen, Sauvik Samanta, G. Venter, Sophie C. M. Rees-Jones   +6 more
semanticscholar   +1 more source

Novel Synthesis of Carbamate‐Linked Oligosaccharides by a Modified Curtius Rearrangement.

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Shinya Sasayama, Hideyo Takahashi, Daisuke Sawada, Shiro Ikegami   +3 more
openaire   +3 more sources

Highly Efficient Curtius Rearrangement Approach for the Synthesis of Unsymmetrical Sulfonimidoyl Ureas

, 2017
A highly efficient synthesis of unsymmetrical sulfoximine ureas is developed. The reaction unites simple NH-sulfoximines and acyl azides via a formal Curtius rearrangement as the key step.
Hao Zhou, Jianquan Hong, Jiapian Huang, Zhiyuan Chen   +3 more
semanticscholar   +1 more source

Use of a Curtius Rearrangement as Part of the Multikilogram Manufacture of a Pyrazine Building Block

, 2017
Commercial route definition for a glucokinase activator called for a reevaluation of the synthesis and processes used to access multikilogram quantities of 2-amino-5-methylpyrazine.
A. Steven, Phillip Hopes
semanticscholar   +1 more source

Synthesis of 3-Aryl-2-arylamidobenzofurans Based on the Curtius Rearrangement

The Journal of Organic Chemistry, 2011
AbstractThe title compounds are of biological interest.
Amandine Carrer, Emilie Auvrouin, Emmanuel Bertounesque, Emmanuel Bertounesque, Patricia Rousselle, Jean-Claude Florent, Jean-Claude Florent   +6 more
openaire   +4 more sources