Oxidative cleavage of allyl ethers by an oxoammonium salt
作者:Christopher B. Kelly、John M. Ovian、Robin M. Cywar、Taylor R. Gosselin、Rebecca J. Wiles、Nicholas E. Leadbeater
DOI:10.1039/c5ob00270b
日期:——
A method to oxidatively cleave allyl ethers to their corresponding aldehydesmediated by an oxoammoniumsalt is described. Using a biphasic solvent system and mild heating, cleavage proceeds readily, furnishing a variety of α,β-unsaturated aldehydes and ketones.
remote functionalizations based on alkene isomerization. In contrast, protocols based on alkyne isomerization are comparatively rare. Herein, we report a general Pd-catalyzed long-range isomerization of alkynyl alcohols. Starting from aryl-, heteroaryl-, or alkyl-substituted precursors, the optimized system provides access preferentially to the thermodynamically more stable α,β-unsaturated aldehydes