Zobrazeno 1 - 10
of 429
pro vyhledávání: '"Akio Baba"'
Publikováno v:
Molecules, Vol 23, Iss 8, p 1884 (2018)
Regioselective anti-allylindation of alkynes was achieved using InBr3 and allylic silanes. Various types of alkynes and allylic silanes were applicable to the present allylindation. This sequential process used the generated 1,4-dienylindiums to esta
Externí odkaz:
https://doaj.org/article/212df39a030146e19b45de3b791b5cc5
Publikováno v:
Molecules, Vol 23, Iss 4, p 782 (2018)
In the synthesis of five-membered heterocycles by the annulation of epoxides with heterocumulenes such as carbon dioxide and isocyanates, we developed the indium-tin catalytic system and synthesized various cyclic adducts including novel types produc
Externí odkaz:
https://doaj.org/article/7ee2c67e4ad04a938e491c9088e34ba5
Publikováno v:
Molecules, Vol 21, Iss 10, p 1330 (2016)
The substitution of a siloxy group using thiosilanes smoothly occurred in the presence of InI3 catalyst to yield the corresponding thioethers. InI3 was a specifically effective catalyst in this reaction system, while other typical Lewis acids such as
Externí odkaz:
https://doaj.org/article/8c935c5d668b4ba5a4db0fedbd7dc63a
Autor:
Akihito Konishi, Yuya Tsutsui, Makoto Yasuda, Hideto Nakajima, Akio Baba, Daiki Tanaka, Koichi Nakaoka, Kouji Chiba
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 26(65)
Selective bond formations are one of the most important reactions in organic synthesis. In the Lewis acid mediated electrophile reactions of carbonyls, the selective formation of a carbonyl-acid complex plays a critical role in determining selectivit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0e018d0ab879784572be1c00af30388
https://pubmed.ncbi.nlm.nih.gov/32870540
https://pubmed.ncbi.nlm.nih.gov/32870540
Publikováno v:
Chemistry - A European Journal. 23:5219-5223
Cage-shaped borates tethered by heavier Group 14 elements (Si or Ge) were synthesized. These possess an intramolecularly transannular pπ -σ* interaction between the boron center and the tethered Si/Ge atom, which allows the precise tuning of their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c24f731097fda4e6efeb7df0c711a65b
https://doi.org/10.1002/chem.201700659
https://doi.org/10.1002/chem.201700659
Autor:
Makoto Yasuda, Sachiko Yoshioka, Hideto Nakajima, Akio Baba, Akihito Konishi, Hikaru Maruyama
Publikováno v:
Polyhedron. 125:130-134
A new series of tetrameric aluminum molecules with a Mitsubishi structure, composed of two cage-shaped triphenolic ligands with a tripod-chelated structure, have been synthesized and characterized. Transmetalation from the cage-shaped borates was a p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d36ab87a3c0033e312b1e5a78b33e6d
https://doi.org/10.1016/j.poly.2016.10.019
https://doi.org/10.1016/j.poly.2016.10.019
Autor:
Akihito Konishi, Akio Baba, Tomohiro Eguchi, Koichi Nakaoka, Hikaru Maruyama, Makoto Yasuda, Hideto Nakajima
Publikováno v:
Chemistry - A European Journal. 23:1273-1277
Chiral Lewis acids play an important role in the precise construction of various types of chiral molecules. Here, a cage-shaped borate 2 was designed and synthesized as a chiral Lewis acid that possesses a unique C3 -symmetric structure composed of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bb8c57efa39f8da65a87318c8abbc9a
https://doi.org/10.1002/chem.201605712
https://doi.org/10.1002/chem.201605712
Autor:
Makoto Yasuda, Akio Baba, Hiroto Imaoka, Hiroki Ueda, Y. Kita, Yoshihiro Nishimoto, Kouji Chiba
Publikováno v:
Chemistry - A European Journal. 22:11837-11845
A cross-coupling reaction between enol derivatives and silyl ketene acetals catalyzed by GaBr3 took place to give the corresponding α-alkenyl esters. GaBr3 showed the most effective catalytic ability, whereas other metal salts such as BF3 ⋅OEt2 ,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14139ae973c9fdab5f51014343a02614
https://doi.org/10.1002/chem.201602150
https://doi.org/10.1002/chem.201602150
Autor:
Yuji Wada, Makoto Yasuda, Takahito Kajiki, Yasunori Tsukahara, Satoshi Yazawa, Tomohisa Yamauchi, Yoshihiro Nishimoto, Kensuke Kiyokawa, Akio Baba
Publikováno v:
Chemistry Letters. 46:1116-1118
The effect of functional groups on the activation of molecules by microwave irradiation in the reduction of organic chlorides by Bu3SnH was investigated. The reactivity of a substrate with a hydroxy group increased under microwave heating conditions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2858234fa2850220e8b65cc89bc53db7
https://doi.org/10.1246/cl.170413
https://doi.org/10.1246/cl.170413
Autor:
Makoto Yasuda, Nayyar Ahmad Aslam, Arya Jayadev Sudha, Srinivasarao Arulananda Babu, Akshey Sandhu, Akio Baba
Publikováno v:
Tetrahedron. 76:131217
We report the synthesis of β-cyanoalanine derivatives and enantiomerically enriched aspartates. The zinc-mediated addition of α-bromoacetonitrile to α-imino esters afforded various β-cyanoalanine derivatives 3a-l and 5a-d in satisfactory to good
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acc3cf1314c97c16a4ac87216129b3c2
https://doi.org/10.1016/j.tet.2020.131217
https://doi.org/10.1016/j.tet.2020.131217