81256-11-3Relevant academic research and scientific papers
Hexafluoroisopropanol (HFIP)-prompted rearrangement of N-phenoxysulfonamides for the direct assembly of ortho-sulfonamide phenols: A combined experimental and computational study
Wang, Yi,Chen, Xiaoli,Lin, Shuang,Gao, Hui,Liu, Fu-Xiaomin,Zhou, Zhi,Yi, Wei
, (2022/01/08)
ortho-Sulfonamide phenols represent a class of attractive structural motifs in medicinal and synthetic chemistry. Herein an efficient metal-free rearrangement reaction has been developed for the construction of ortho-sulfonamide phenols via HFIP-prompted
Switchable Oxidative Reactions of N-allyl-2-Aminophenols: Palladium-Catalyzed Alkoxyacyloxylation vs an Intramolecular Diels-Alder Reaction
Beccalli, Egle M.,Giofrè, Sabrina,Keller, Manfred,Lo Presti, Leonardo,Molteni, Letizia
supporting information, p. 7698 - 7702 (2021/10/25)
The Pd(II)-catalyzed reaction of N-allyl-2-aminophenols in the presence of PhI(OCOR)2 as the oxidant resulted in an alkoxyacyloxylation process, with the formation of functionalized dihydro-1,4-benzoxazines. The reaction performed in the absence of pallad
Pd(II)-Catalyzed Enantioselective Ring-Contraction for the Construction of 1,4-Benzoxazines
Ye, Chenghao,Gao, Feng,Wei, Haipeng,Chen, Jianzhong,Yang, Guoqiang,Yuan, Qianjia,Zhang, Wanbin
supporting information, p. 16573 - 16581 (2021/11/18)
Enantioselective ring-contraction reactions have not been widely reported. We have developed an enantioselective ring contraction of 5,6-dihydro-2H-benzo[b][1,4]oxazocines, affording enantiomerically enriched 3,4-dihydro-2H-1,4-benzoxazine derivatives as
Solvent-Controlled Pd(II)-Catalyzed Aerobic Chemoselective Intermolecular 1,2-Aminooxygenation and 1,2-Oxyamination of Conjugated Dienes for the Synthesis of Functionalized 1,4-Benzoxazines
Wen, Ke,Wu, Zhengxing,Huang, Banruo,Ling, Zheng,Gridnev, Ilya D.,Zhang, Wanbin
, p. 1608 - 1612 (2018/03/23)
Pd(II)-catalyzed intermolecular 1,2-aminooxygenation and 1,2-oxyamination of conjugated dienes have been developed. The chemoselective preparation of a variety of 2-functionalized and 3-functionalized 1,4-benzoxazine derivatives was accomplished via the a
A one-pot hypoiodite catalysed oxidative cycloetherification approach to benzoxazoles
Boominathan, Siva Senthil Kumar,Hu, Wan-Ping,Senadi, Gopal Chandru,Vandavasi, Jaya Kishore,Wang, Jeh-Jeng
supporting information, p. 6726 - 6728 (2014/06/23)
A practical one-pot hypoiodite catalysed oxidative cyclization approach to synthesize α-ketobenzoxazole derivatives was successfully developed. This operationally simple protocol utilizes easily-accessible starting materials and has a broad substrate scope with excellent yields. This journal is the Partner Organisations 2014.
Acid-catalysed hydrolysis of some aromatic cyclic sulfamates
Bekdemir, Yunus,Kutuk, Halil,Celik, Sibel,Tillett, John G.
, p. 973 - 980 (2007/10/03)
The acid catalysed hydrolysis of some cyclic sulfamates, X-3-(p-tolylsulfonyl)-1,2,3-benzoxathiazole 2,2-dioxides (1a, X=Me; 1b, X=H; 1c, X=Cl; 1d, X = NO2) have been studied in concentrated aqueous sulfuric and perchloric acid solutions. Analysis of the data by the Excess Acidity Method, activation parameters, substituent, solvent deuterium isotope effect and order of the catalytic effects of the acids are all in agreement with an A-1 mechanism in the studied range.
Substitution at Tetracoordinate Sulfur(VI). Rearrangement of 2-Aminoaryl Arenesulfonates to N-(2-Hydroxyaryl)arenesulfonamides
Andersen, Kenneth K.,Gowda, Gopala,Jewell, Linda,McGraw, Phillip,Phillips, Brian T.
, p. 1884 - 1889 (2007/10/02)
A series of eight 2-aminoaryl arenesulfonates upon treatment by strong bases rearranged intramolecularly to their corresponding N-(2-hydroxyaryl)arenesulfonamides as did the related tosylates derived from 2-amino-3-hydroxypyridine, 1-amino-2-naphthol, and
