1089665-81-5Relevant articles and documents
Amphiphilic immobilized diphenylprolinol alkyl ether catalyst on PS-PEG resin
Koshino, Seitaro,Hattori, Shusuke,Hasegawa, Shota,Haraguchi, Naoki,Yamamoto, Takeshi,Suginome, Michinori,Uozumi, Yasuhiro,Hayashi, Yujiro
supporting information, p. 790 - 797 (2021/04/14)
Diphenylprolinol silyl ether is a widely used organocatalyst, and its immobilization on a solid support was investigated for the easy recycling and reuse of this catalyst. Because a silyl ether bond of the catalyst is weak, its alkyl ether was attached to polymers such as a polyquinoxaline-based polymer, a polystyrene polymer (PS) resin, and a polystyrenepoly(ethylene glycol) graft copolymer (PS-PEG) resin. Although a polymer-supported organocatalyst generally decreases its reactivity compared with the monomer catalyst, diphenylprolinol anthrylmethyl ether supported on PS-PEG was found to be a reactive organocatalyst; it catalyzed the Michael reaction of an aldehyde and a nitroalkene in water without an organic solvent being present, with excellent diastereo- and enantioselectivities.
Conformational Control of Tetrahydropyran-Based Hybrid Dipeptide Catalysts Improves Activity and Stereoselectivity
Borges-González, Jorge,García-Monzón, Irma,Martín, Tomás
supporting information, p. 2141 - 2147 (2019/03/23)
Herein, we introduce and demonstrate how carbohydrates can be used as conformational control units of organocatalysts to tune their catalytic properties. New hybrid dipeptide-like organocatalysts based on ζ-sugar aminoacids and proline were prepared and t
D -Prolyl-2-(trifluoromethylsulfonamidopropyl)pyrrolidine: An Organocatalyst for Asymmetric Michael Addition of Aldehydes to β-Nitroalkenes at Ambient Conditions
Gorde, Amol B.,Ramapanicker, Ramesh
, p. 1523 - 1533 (2019/02/07)
Four 2-(trifluoromethylsulfonamidoalkyl)pyrrolidines and their d-prolinamides were prepared and screened as organocatalysts for the Michael addition reaction of aldehydes with β-nitroalkenes at rt and without the use of additives. d-Prolyl-2-(trifluoromet