cas 24939-24-0, 4-Aminobenzene-1-sulfonyl chloride

Articles about 24939-24-0Total 4 be found

The synthesis of sulfonated 4: H -3,1-benzoxazines via an electro-chemical radical cascade cyclization
A new route for the synthesis of sulfonated 4H-3,1-benzoxazines has been accomplished by electrochemical radical cascade cyclizations of styrenyl amides with sulfonylhydrazines. This process demonstrates a wide substrate scope with diverse functional group compatibility under metal- and external oxidant-free conditions at ambient temperature.
He, Tian-Jun,Huang, Jing-Mei,Zhong, Wei-Qiang
supporting information
p. 2735 - 2738
(2020/03/17)

Hydrogenation of nitroaromatics to anilines catalyzed by air-stable arene ruthenium (II)–NNN pincer complexes
A series of air-stable, phosphine-free arene ruthenium (II)–NNN pincer complexes (RuL, RuL1, RuL2 and RuL3) have been synthesized and characterized by spectroscopic and single-crystal X-ray analysis. Further, arene ruthenium (II)–NNN pincer complexes have been used as catalyst for hydrogenation of nitroaromatics into aniline in the presence of NaBH4 at room temperature. The catalytic process suggested highly chemo-selective nitroreduction with wide functional group tolerance.
Pitchaimani, Jayaraman,Gunasekaran, Nanjappan,Anthony, Savarimuthu Philip,Moon, Dohyun,Madhu, Vedichi
(2019/04/14)

High Performance and Active Sites of a Ceria-Supported Palladium Catalyst for Solvent-Free Chemoselective Hydrogenation of Nitroarenes
Cerium oxide-supported palladium catalysts (Pd/CeO2) prepared by a simple impregnation method exhibit exciting catalytic activity and high chemoselectivity for the solvent-free hydrogenation of a variety of substituted nitroarenes including the reducible functional groups to the corresponding aromatic amines under mild reaction conditions. Taking nitrobenzene as an example, the Pd/CeO2 catalyst can afford aniline yields of >99 % with turnover frequencies as high as 11 411 h?1 and 69 824 h?1 at 40 °C and 100 °C, respectively. Pd2+ ion species exist as isolated single atoms with ?Pd2+?O2??Ce4+? linkages on the surface of PdxCe1?xO2?σ solid solution and are found to be active sites for the selective hydrogenation of nitroarenes in the absence of solvent. The superior catalytic performance can be attributed to the cooperative effect between Pd2+ ions and unique surface sites of CeO2. A possible mechanism is proposed for the hydrogenation of nitroarenes with H2 over the Pd/CeO2. The Pd/CeO2 catalyst can be recovered easily and reused for at least seven recycling reactions without loss of catalytic properties.
Shi, Xiuxiu,Wang, Xueguang,Shang, Xingfu,Zou, Xiujing,Ding, Weizhong,Lu, Xionggang
p. 3743 - 3751
(2017/10/16)

Design, synthesis and biological activities of some 7-aminocephalosporanic acid derivatives
The treatment of 7-ACA with 4-substituted benzensulfonyl chlorides afforded the compounds containing 4-nitro/aminophenyl sulfonylamino moiety in the cephalosporanic acid skeleton (2, 4). The synthesis of the cephalosporanic acid derivatives containing 1,3
Basoglu, Serap,Demirbas, Ahmet,Ulker, Serdar,Alpay-Karaoglu, Sengul,Demirbas, Neslihan
p. 622 - 631
(2013/10/22)