Optimized Synthesis of Vinyl Ether Sugars and Vinyl Glycosides through Transfer Vinylation Catalyzed by (4,7‐Ph2‐phen)Pd(OOCCF3)2
摘要:
Sugar vinyl ethers and vinyl glycosides are conveniently synthesized by catalytic transfer vinylation with butyl vinyl ether, which serves as both the solvent and source of vinyl. The air-stable catalyst (4,7-diphenyl-1,10-phenanthroline)Pd(OOCCF(3))(2) is prepared in situ from commercially available components.
O-Isopropylidenation of carbohydrates catalyzed by vanadyl triflate
摘要:
Vanadyl triflate has been identified as a mild and efficient catalyst for the chemoselective O-isopropylidenation of functionalized carbohydrates with acetone and acetone equivalents. The current protocol is compatible with a diverse array of protecting groups and the products can be readily isolated by simple aqueous wash. (c) 2006 Elsevier Ltd. All rights reserved.
Optimized Synthesis of Vinyl Ether Sugars and Vinyl Glycosides through Transfer Vinylation Catalyzed by (4,7‐Ph<sub>2</sub>‐phen)Pd(OOCCF<sub>3</sub>)<sub>2</sub>
作者:Martin Bosch、Sean Handerson、Marcel Schlaf
DOI:10.1080/07328300802030852
日期:2008.5
Sugar vinyl ethers and vinyl glycosides are conveniently synthesized by catalytic transfer vinylation with butyl vinyl ether, which serves as both the solvent and source of vinyl. The air-stable catalyst (4,7-diphenyl-1,10-phenanthroline)Pd(OOCCF(3))(2) is prepared in situ from commercially available components.
O-Isopropylidenation of carbohydrates catalyzed by vanadyl triflate
Vanadyl triflate has been identified as a mild and efficient catalyst for the chemoselective O-isopropylidenation of functionalized carbohydrates with acetone and acetone equivalents. The current protocol is compatible with a diverse array of protecting groups and the products can be readily isolated by simple aqueous wash. (c) 2006 Elsevier Ltd. All rights reserved.