Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ummareddy Venkata Subba Reddy"'
Autor:
Ummareddy Venkata Subba Reddy, Bheemreddy Anusha, Zubeda Begum, Chigusa Seki, Yuko Okuyama, Michio Tokiwa, Suguru Tokiwa, Mitsuhiro Takeshita, Hiroto Nakano
Publikováno v:
Catalysts, Vol 12, Iss 12, p 1674 (2022)
Chiral primary α-amino amides, consisting of an adjacent enamine bonding site (Bronsted base site), a hydrogen bonding site (Bronsted acid site), and flexible bulky substituent groups to modify the steric factor, are proving to be extremely valuable
Externí odkaz:
https://doaj.org/article/f38abfafd05743f2b5a5a296ed82aeff
Autor:
Ummareddy Venkata Subba Reddy, Chigusa Seki, Bheemreddy Anusha, Madhu Chennapuram, Koji Uwai, Kento Seki, Michio Tokiwa, Eunsang Kwon, Mitsuhiro Takeshita, Yuko Okuyama, Hiroto Nakano
Publikováno v:
European Journal of Organic Chemistry. 2017:3874-3885
Enantioselective crossed aldol reactions of isatin derivatives and acetaldehyde have been developed with a series of simple diamino alcohol catalysts to afford 3-substituted 3-hydroxyindolin-2-ones in high chemical yields (up to 95 %) and optical pur
Autor:
CHENNAPURAM, Madhu, UMMAREDDY , Venkata Subba Reddy, SEKI , Chigusa, OKUYAMA, Yuko, KWON, Eunsang, UWAI, Koji, TOKIWA, Michio, Takeshita, Mitsuhiro, NAKANO, Hiroto
Publikováno v:
European Journal of Organic Chemistry. 12:1638-1646
A series of new hybrid type squaramide-fused amino alcohol (SFAA) catalysts were synthesized and their catalytic efficiency in enantioselective nitro-aldol reaction of various isatins with nitromethane that afford the chiral 3-substituted 3-hydroxyox
Autor:
Yoshihito Kohari, Yasuteru Mawatari, Ummareddy Venkata Subba Reddy, Koji Uwai, Jo Kimura, Mitsuhiro Takeshita, Eunsang Kwon, Yuko Okuyama, Hiroto Nakano, Chigusa Seki, Tatsuo Iwasa, Michio Tokiwa
Publikováno v:
European Journal of Organic Chemistry. 2016:3748-3756
Enantioselective aldol reactions of various isatins with ketones using newly designed amino amide organocatalysts were found to provide chiral 3-substituted 3-hydroxy-2-oxindoles in good to excellent yields and with excellent stereoselectivities (up
Autor:
Ummareddy Venkata Subba Reddy, Chigusa Seki, Madhu Chennapuram, Yuko Okuyama, Eunsang Kwon, Hiroto Nakano
Publikováno v:
European Journal of Organic Chemistry. 2016:4124-4143
Chiral primary β-amino alcohols, constuting adjacently positioned Bronsted base and Bronsted acid sites, are emerging as very valuable bifunctional organocatalysts in a wide array of asymmetric organic transformations. Primary β-amino alcohols repr
Autor:
Ummareddy Venkata Subba Reddy, Madhu Chennapuram, Eunsang Kwon, Yuko Okuyama, Chigusa Seki, Hiroto Nakano
Publikováno v:
ChemInform. 47
Chiral primary β-amino alcohols, constuting adjacently positioned Bronsted base and Bronsted acid sites, are emerging as very valuable bifunctional organocatalysts in a wide array of asymmetric organic transformations. Primary β-amino alcohols repr
Autor:
Basireddy V. Subba Reddy, Jhillu S. Yadav, Cirandur Suresh Reddy, Ummareddy Venkata Subba Reddy, Bheemreddy Anusha
Publikováno v:
ChemInform. 45