S-Thiazolinyl (STaz) Glycosides as Versatile Building Blocks for Convergent Selective, Chemoselective, and Orthogonal Oligosaccharide Synthesis
作者:Papapida Pornsuriyasak、Alexei V. Demchenko
DOI:10.1002/chem.200600262
日期:2006.8.25
In the aim of developing new procedures for efficient oligosaccharide assembly, a range of S-thiazolinyl (STaz) glycosides have been synthesized. These novel derivatives were evaluated against a variety of reaction conditions and were shown to be capable of being chemoselectively activated in the armed-disarmed fashion. Moreover, the S-thiazolinyl moiety exhibited a remarkable propensity for selective
Controlling the reactions of 1-bromogalactose acetate in methanol using ionic liquids as co-solvents
作者:Alyssa Gilbert、Ronald S. Haines、Jason B. Harper
DOI:10.1039/d0ob01198c
日期:——
The reactions of an acetobromogalactose in mixtures of methanol and one of seven different ionic liquids with varying constituent ions were studied. In general, small amounts of ionic liquid in the reactionmixture led to increases in the rate constant compared to methanol, whilst large amounts of ionic liquid led to decreases in the rate constant; this outcome differs significantly from previous reactions