Results 81 to 90 of about 449,894 (327)

Transition metal-catalyzed branch-selective hydroformylation of olefins in organic synthesis

Green Synthesis and Catalysis, 2021
Hydroformylation of olefins can generate linear and branched aldehydes, and the branched aldehydes are attractive precursors for the synthesis of fine chemicals and pharmaceuticals.
Yingtang Ning, Tomohiko Ohwada, Fen-Er Chen   +2 more
doaj  

Deep neural network Based Low-latency Speech Separation with Asymmetric analysis-Synthesis Window Pair [PDF]

arXiv, 2021
Time-frequency masking or spectrum prediction computed via short symmetric windows are commonly used in low-latency deep neural network (DNN) based source separation. In this paper, we propose the usage of an asymmetric analysis-synthesis window pair which allows for training with targets with better frequency resolution, while retaining the low ...
arxiv  

Systematic study on probable projectile-target combinations for the synthesis of the $^{302}$120 superheavy nucleus [PDF]

Physical Review C, Volume 94 (2016) 024623, 2016
Probable projectile-target combinations for the synthesis of superheavy element $^{302}$120 have been studied taking Coulomb and proximity potential as the interaction barrier. The probabilities of compound nucleus formation, PCN for the projectile-target combinations found in the cold reaction valley of $^{302}$120 are estimated.
arxiv   +1 more source

Preparation of anti-vicinal amino alcohols: asymmetric synthesis of D-erythro-Sphinganine, (+)-spisulosine and D-ribo-phytosphingosine [PDF]

, 2013
Two variations of the Overman rearrangement have been developed for the highly selective synthesis of anti-vicinal amino alcohol natural products. A MOM-ether directed palladium(II)-catalyzed rearrangement of an allylic trichloroacetimidate was used as ...
Abraham E., Ahmed M. Zaed, Ait-Youcef R., Allepuz A. C., Amarante G. W., Andrew Sutherland, Barrett A. G. M., Bernet B., Blanchette M. A., Cai Y., Cai Y., Chen B.-S., Cook G. R., Corey E. J., Corey E. J., Cuadros R., Davies S. G., Devi T. J., Dickson R. C., Dinda S. K., Enders D., Ewen D. D. Calder, Fanning K. N., Fernandes R. A., Ghosal P., Hertweck C., Hoffmann R. W., Howell A. R., Hubieki M. P., Jamieson A. G., Jamieson A. G., Jamieson A. G., Jamieson A. G., Kokatla H. P., Kolb H. C., Kolter T., Koskinen P. M., Lee S. I., Lipshutz B. H., Liu Z., Llaveria J., Lombardo M., Luo S.-Y., Malik G., Martinková M., Modrak D. E., Morales-Serna J. A., Murakami T., Naidu S. V., Ndakala A. J., Ndonye R. M., Perali R. S., Prabhakar P., Rodriguez-Lafrasse C., Schneiter R., Sengupta S., Snook C. F., So R. C., Summers S. A., Swift M. D., Séguin C., Watanabe M., Xarnod C., Xu K., Yoon H. J., Yun J. M., Zaed A., Zaed A. M.   +67 more
core   +1 more source

Stabilized Intermediate Phase Via Pseudo‐Halide Anions Toward Highly Efficient and Light‐Soaking Stable Perovskite Solar Cells

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The formate pseudo‐halide anion is strategically introduced at the buried interface to stabilize the intermediate phases formed during perovskite crystallization. The controlled crystallization enhances crystallinity and alleviates tensile strain, eliminating residual PbI2 near the buried interface.
Jongdeuk Seo, Yun Seop Shin, Dong Gyu Lee, Jaehwi Lee, Jina Roe, Jung Geon Son, Woojin Lee, Yeonjeong Lee, Dongmin Lee, Ji Won Song, Tae Kyung Lee, Dong Suk Kim, Jin Young Kim   +12 more
wiley   +1 more source

Crystal structure of 2-(8-bromo-2-phenylimidazo[1,2-α]pyridin-3-yl)-6,7-dimethyl-3-phenylquinoxaline, C29H21BrN4

Zeitschrift für Kristallographie - New Crystal Structures, 2018
C29H21BrN4, orthorhombic, Pca21 (no. 29), a = 15.6577(5) Å, b = 9.6445(3) Å, c = 31.1869(10) Å, V = 4709.6(2) Å3, Z = 8, Rgt(F) = 0.0435, wRref(F2) = 0.0779, T = 293(2) K.
Song Gui Ting, Meng Jiang Ping, Zhu Jin
doaj   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Picomolar inhibitor of reverse transcriptase featuring significantly improved metabolic stability

Acta Pharmaceutica Sinica B, 2023
Considering the undesirable metabolic stability of our recently identified NNRTI 5 (t1/2 = 96 min) in human liver microsomes, we directed our efforts to improve its metabolic stability by introducing a new favorable hydroxymethyl side chain to the C-5 ...
Ya-Li Sang, Christophe Pannecouque, Erik De Clercq, Shuai Wang, Fen-Er Chen   +4 more
doaj  

Scalable (Enantioselective) Syntheses of Novel 3-Methylated Analogs of Pazinaclone, (S)-PD172938 and Related Biologically Relevant Isoindolinones

Molecules, 2022
Herein, we report the application of an efficient and practical K2CO3 promoted cascade reaction of 2-acetylbenzonitrile in the synthesis of novel 3-methylated analogs of Pazinaclone and PD172938, belonging to isoindolinones heterocyclic class bearing a ...
Antonia Di Mola, Giorgia Nicastro, Lorenzo Serusi, Rosanna Filosa, Mario Waser, Antonio Massa   +5 more
doaj   +1 more source

A catalytic asymmetric total synthesis of (-)-perophoramidine [PDF]

, 2014
We report a catalytic asymmetric total synthesis of the ascidian natural product perophoramidine. The synthesis employs a molybdenum-catalyzed asymmetric allylic alkylation of an oxindole nucleophile and a monosubstituted allylic electrophile as a key ...
Krüger, Sebastian, Osipov, M., Trost, B.M., Zhang, Y.   +3 more
core   +2 more sources