Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Shinobu Takizawa"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024)
Abstract Cheminformatics-based machine learning (ML) has been employed to determine optimal reaction conditions, including catalyst structures, in the field of synthetic chemistry. However, such ML-focused strategies have remained largely unexplored
Externí odkaz:
https://doaj.org/article/b799602fe09d44ab8bcdd6874f892388
Publikováno v:
Sustainable Chemistry, Vol 3, Iss 4, Pp 551-557 (2022)
The facile and green synthesis of 1,1′-binaphthalene-2,2′-diamine (BINAM) derivatives was established via the anodic dehydrogenative homo-coupling of 2-naphthylamines. The sustainable protocol provided a series of BINAMs in excellent yields of up
Externí odkaz:
https://doaj.org/article/339ac86134cb4c31be05e3b71e61d109
Autor:
Md. Imrul Khalid, Mohamed S. H. Salem, Makoto Sako, Masaru Kondo, Hiroaki Sasai, Shinobu Takizawa
Publikováno v:
Communications Chemistry, Vol 5, Iss 1, Pp 1-7 (2022)
Heterodehydrohelicenes exhibit attractive chiroptical properties, but their direct construction by asymmetric synthesis remains very challenging. Here, the authors report the electrochemical sequential synthesis of azaoxadehydro[7]helicenes from aren
Externí odkaz:
https://doaj.org/article/5cb70e2b07614dd9ab0a0d9542d1beba
Autor:
Masaru Kondo, H. D. P. Wathsala, Mohamed S. H. Salem, Kazunori Ishikawa, Satoshi Hara, Takayuki Takaai, Takashi Washio, Hiroaki Sasai, Shinobu Takizawa
Publikováno v:
Communications Chemistry, Vol 5, Iss 1, Pp 1-9 (2022)
Data-driven methodology plays an important role in the rapid identification of appropriate chemical conditions, however, optimization of multiple variables in the flow reaction remains challenging. Here, the authors report a Bayesian optimization-ass
Externí odkaz:
https://doaj.org/article/dd7072b50b7f4776870e6bf1a521825f
Publikováno v:
Molecules, Vol 29, Iss 2, p 296 (2024)
Dehydrohelicene-based molecules stand out as highly promising scaffolds and captivating chiroptical materials, characterized by their unique chirality. Their quasi-helical π-conjugated molecular architecture, featuring successively ortho-annulated a
Externí odkaz:
https://doaj.org/article/a6e57efa21554f6482ecdebaf220f678
Autor:
Mohamed S. H. SALEM, Rubal SHARMA, Md. Imrul KHALID, Meghna SASI, Ryo AMASAKI, Yoshitane IMAI, Mitsuhiro ARISAWA, Shinobu TAKIZAWA
Publikováno v:
Electrochemistry, Vol 91, Iss 11, Pp 112015-112015 (2023)
The pursuit of chiral nanographenes with robust chiral stability and good chiroptical responses is of great interest for material-based applications. However, the most reported preparation processes involve intricate synthetic pathways and harsh cond
Externí odkaz:
https://doaj.org/article/e65bb4475e334b4b897c35b7275a3194
Autor:
Mohamed S. H. Salem, Shinobu Takizawa
Publikováno v:
Frontiers in Chemistry, Vol 10 (2022)
Anionic salicylimine-based cobalt (III) complexes featuring chiral ligands derived from isoleucine amino acids were used as efficient bifunctional phase-transfer catalysts for electrophilic iodination of enol ethers. The Brønsted acids of these comp
Externí odkaz:
https://doaj.org/article/1fbef2e2366a497999c1226360956a59
Autor:
Masaru Kondo, Hettiarachchige Dona Piyumi Wathsala, Kazunori Ishikawa, Daisuke Yamashita, Takeshi Miyazaki, Yoji Ohno, Hiroaki Sasai, Takashi Washio, Shinobu Takizawa
Publikováno v:
Molecules, Vol 28, Iss 13, p 5180 (2023)
Bayesian optimization (BO)-assisted screening was applied to identify improved reaction conditions toward a hundred-gram scale-up synthesis of 2,3,7,8-tetrathiaspiro[4.4]nonane (1), a key synthetic intermediate of 2,2-bis(mercaptomethyl)propane-1,3-d
Externí odkaz:
https://doaj.org/article/e18ccabed2494c69b463a0a9436756fb
Publikováno v:
Molecules, Vol 28, Iss 1, p 356 (2023)
This study processes a facile and green approach for the Markovnikov-selective hydroamination of styrene with naphthylamine through irradiation with UV LED light (365 nm) via an electron donor–acceptor complexation between naphthylamines and oxygen
Externí odkaz:
https://doaj.org/article/44b8250b64d74e01bbf8184025b5f92f
Publikováno v:
Molecules, Vol 27, Iss 24, p 9068 (2022)
A novel double aza-oxa[7]helicene was synthesized from the commercially available N1,N4-di(naphthalen-2-yl)benzene-1,4-diamine and p-benzoquinone in two steps. Combining the acid-mediated annulation with the electrochemical sequential reaction (oxida
Externí odkaz:
https://doaj.org/article/de77ed07dde54c44836c4581a822bc49