Výsledky vyhledávání - "Shiori Nunokawa"

Heteropoly Acid Supported on Silica Gel as Catalyst for the Asymmetric Transfer Allylation of Aromatic Aldehydes under Solvent-Free Conditions

Autor: Yoshiyasu Ichikawa, Atsushi Okuyama, Hiyoshizo Kotsuki, Shiori Nunokawa, Keiji Nakano, Keisuke Yamashita, Tadaharu Ueda, Kazuya Oki

Publikováno v: Synlett. 28:597-600

A new convenient method for the asymmetric transfer allylation of aromatic aldehydes was developed. The reaction gave the best results using a chiral allyl donor molecule derived from (–)-menthone in the presence of heteropoly acids supported on si

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1075418eac4801ec9fac59c9205e5a97
https://doi.org/10.1055/s-0036-1588121

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Asymmetric Michael Addition Reaction of α-Aryl-Substituted Lactams Catalyzed by Chiral Quaternary Ammonium Salts Derived from Cinchona Alkaloids: A New Short Synthesis of (+)-Mesembrine

Autor: Yoshiyasu Ichikawa, Shiori Nunokawa, Hiyoshizo Kotsuki, Masamitsu Minamisawa, Keiji Nakano

Publikováno v: Synlett. 26:2301-2305

The enantioselective Michael addition reaction of α-aryl-substituted lactams with electron-deficient olefins was efficiently catalyzed using chiral quaternary ammonium salts derived from cinchona alkaloids. This method was highly useful for the cons

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01f579c0777053113c977588b66a8a8e
https://doi.org/10.1055/s-0035-1560090

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