Results 21 to 30 of about 21,735 (237)

Chemoselective carbene insertion into the N−H bonds of NH3·H2O

Nature Communications, 2022
Converting low-cost inorganic chemicals into value-added organic chemicals is a longstanding goal in chemistry. Here the authors describe a silver-catalysed chemoselective carbene N−H insertion reaction, providing access to primary amines from aqueous ...
Zhaohong Liu, Yong Yang, Qingmin Song, Linxuan Li, Giuseppe Zanoni, Shaopeng Liu, Meng Xiang, Edward A. Anderson, Xihe Bi   +8 more
doaj   +1 more source

Structure and Reactivity of Half-Sandwich Rh(+3) and Ir(+3) Carbene Complexes. Catalytic Metathesis of Azobenzene Derivatives [PDF]

, 2018
Traditional rhodium carbene chemistry relies on the controlled decomposition of diazo derivatives with [Rh2(OAc)4] or related dinuclear Rh(+2) complexes, whereas the use of other rhodium sources is much less developed.
Farès, C., Fürstner, A., Goddard, R., Philipps, P., Tindall, D., Werlé, C.   +5 more
core   +1 more source

Taming tosyl azide: the development of a scalable continuous diazo transfer process [PDF]

, 2016
Heat and shock sensitive tosyl azide was generated and used on demand in a telescoped diazo transfer process. Small quantities of tosyl azide were accessed in a one pot batch procedure using shelf stable, readily available reagents. For large scale diazo
Collins, SG, Crowley, DC, Deadman, BJ, Lynch, D, Maguire, AR, O'Mahony, RM   +5 more
core   +1 more source

Photochemistry of Furyl- and Thienyldiazomethanes: Spectroscopic Characterization of Triplet 3-Thienylcarbene [PDF]

, 2012
Photolysis (λ \u3e 543 nm) of 3-thienyldiazomethane (1), matrix isolated in Ar or N2 at 10 K, yields triplet 3-thienylcarbene (13) and α-thial-methylenecyclopropene (9). Carbene 13 was characterized by IR, UV/vis, and EPR spectroscopy. The conformational
Albers R., Albers R., Aycard J.-P., Baird M. S., Birney D. M., Bolman P. S. H., Brian Bennett, Bucher G., Caroline R. Pharr, Dunning T. H., Dunning T. H., Fontecave M., Grote D., Herges R., Hoffman R. V., Hoffman R. V., Hutton R. S., Hutton R. S., Kaiser R. I., Katritzky A. R., Khasanova T., Khasanova T., Khasanova T., Kirmse W., Laura A. Kopff, LeBlanc B. F., LeBlanc B. F., Matzinger S., McClintock S. P., McKee M. L., McMahon R. J., McMahon R. J., McMahon R. J., Moss R. A., Moss R. A., Moss R. A., Nakatani K., Neese F., Nikitina A., Nikitina A. F., Osaka I., Pan W., Perepichka I. F., Perrotta R. R., Plattner D. A., Platz M. S., Purvis G. D., Robert J. McMahon, Roth H. D., Sander W., Sander W., Schreiner P. R., Scott A. Reid, Seburg R. A., Seburg R. A., Shirtcliff L. D., Sinnecker S., Sun J., Sun Y., Tomioka H., Wang J., Wang J., Wasserman E., Woodcock H. L., Woodcock H. L., Woon D. E., Young B. S., Zuev P. S.   +67 more
core   +3 more sources

Diastereoselective three-component synthesis of beta-amino carbonyl compounds using diazo compounds, boranes, and acyl imines under catalyst-free conditions [PDF]

, 2014
Diazo compounds, boranes, and acyl imines undergo a three-component Mannich condensation reaction under catalyst-free conditions to give the anti β-amino carbonyl compounds in high diastereoselectivity.
Luan, Yi, Schaus, Scott E., Wang, Ge, Yu, Jie, Zhang, Xiaowei   +4 more
core   +1 more source

Intestinal peroxisome proliferator‐activated receptor α‐fatty acid‐binding protein 1 axis modulates nonalcoholic steatohepatitis

Hepatology, EarlyView., 2022
Abstract Background and Aims Peroxisome proliferator‐activated receptor α (PPARα) regulates fatty acid transport and catabolism in liver. However, the role of intestinal PPARα in lipid homeostasis is largely unknown. Here, intestinal PPARα was examined for its modulation of obesity and NASH. Approach and Results Intestinal PPARα was activated and fatty
Tingting Yan, Yuhong Luo, Nana Yan, Keisuke Hamada, Nan Zhao, Yangliu Xia, Ping Wang, Changdong Zhao, Dan Qi, Shoumei Yang, Lulu Sun, Jie Cai, Qiong Wang, Changtao Jiang, Oksana Gavrilova, Kristopher W. Krausz, Daxesh P. Patel, Xiaoting Yu, Xuan Wu, Haiping Hao, Weiwei Liu, Aijuan Qu, Frank J. Gonzalez   +22 more
wiley   +1 more source

Azetidinylideneketenimines as a Multimodal Synthetic Platform: Coordination Chemistry and Cycloaddition‐Triggered Transformations

Angewandte Chemie, EarlyView.
Cross‐coupling/homologation sequence between a stable three‐membered‐ring carbene and isocyanides enables facile and rapid access to novel methyleneketenimines and the first bis(methyleneketenimine). Reactivity studies gave rise to the first methyleneketenimine‐transition metal complexes, unique multimodal reactivity ranging from CO2, isocyanate ...
Taichi Koike, Keisuke Ito, Shintaro Ishida, Takeaki Iwamoto   +3 more
wiley   +2 more sources

Iodine-catalyzed diazo activation to access radical reactivity

Nature Communications, 2018
Radical reactivity of diazo compounds, useful organic building blocks, is yet underexplored. Here, the authors report an iodine-catalyzed radical activation of diazo compounds affording a variety of substituted cyclopropanes, pyrroles and epoxides under ...
Pan Li, Jingjing Zhao, Lijun Shi, Jin Wang, Xiaodong Shi, Fuwei Li   +5 more
doaj   +1 more source

Copper-catalyzed intermolecular formal (5 + 1) annulation of 1,5-diynes with 1,2,5-oxadiazoles

Communications Chemistry, 2023
One-carbon homologation reactions based on one-carbon insertion into the N−O bond of heterocycles have received tremendous interest over the past decades.
Can-Ming Chen, Ye-Nan Yang, Yin-Zhu Kong, Bo-Han Zhu, Peng-Cheng Qian, Bo Zhou, Long-Wu Ye   +6 more
doaj   +1 more source

Synthesis and Antibacterial Activity of Some New Phenothiazine Derivatives

E-Journal of Chemistry, 2007
A series of some new phenothiazine derivatives were synthesized with the objective for evaluation as antimicrobials. The title compounds were prepared by a five step synthesis scheme.
Pawan Kumar Swarnkar, P. Kriplani, G. N. Gupta, K. G. Ojha   +3 more
doaj   +1 more source