297749-52-1Relevant academic research and scientific papers
Benzyl N-phenyl-2,2,2-trifluoroacetimidate: A new and stable reagent for O-benzylation
Okada, Yasunori,Ohtsu, Mamiko,Bando, Masafumi,Yamada, Hidetoshi
, p. 992 - 993 (2008/02/10)
A new O-benzylation reagent, benzyl N-phenyl-2,2,2-trifluoroacetimidate, has been developed. It even reacts with sterically hindered alcohols and base-sensitive hydroxy esters to afford the corresponding benzyl ethers catalyzed by TMSOTf in 1,4-dioxane. This reagent was more stable than benzyl 2,2,2-trichloroacetimidate, a known benzylation reagent. Copyright
One-Pot Generation and Conversion of Trichloroacetimidates for the Racemization-Free Allylation and Benzylation of α-Hydroxyesters and the Enantiopure Synthesis of a Chiral Diglycole
Christoffers, Jens,R??ler, Ulrich
, p. 654 - 658 (2007/10/03)
Ο-Allylations and Ο-benzylations of α-hydroxy esters (3a-3c) are performed without racemization. The reagents applied, Ο-allyl- and Ο-benzyltrichloroacetimidate (5a, 5b) are prepared and converted in a one-pot-procedure. After protection by benzylation (S)-(-)-ethyl lactate (3a) is converted by a sequence of carbonyl reduction, alcohol activation, ether formation, and deprotection to the optically active diglycole derivative 1a.
