Effective Synthesis of Benzyl 3-Phenylpropiolates Via Copper(I)-Catalyzed Esterification of Alkynoic Acids with Benzyl Halides Under Ligand-Free Conditions
corresponding benzyl halides and alkynoic acids under ligand-free condition. This methodology is also suitable for aromatic and α,β-unsaturated acids. The desired esters could be obtained in good yields.Graphical AbstractWe developed an efficient way to prepare benzyl 3-phenylpropiolates via copper-catalyzed coupling between corresponding benzyl halides and alkynoic acids under ligand-free condition
Three in one: A highly efficient and mild PdII‐catalyzed carboesterification of alkenes with carboxylic alkyne derivatives proceeds through a domino‐type alkyne–alkene coupling/CO‐bond formation (see scheme). The stereoselectivity is controlled by the choice of substrates and temperature. The reaction provides a convenient method for the construction of naturally occurring biologically active compounds
The direct reductive functionalization of alkynes undermildconditions presents a promising yet challenging avenue for accessing value-added molecules. Alkyne radical anions represent a distinct class of reactive intermediates characterized by both a charge and an unpaired electron, thus holding great potential for facilitating diverse bond formations, particularly in alkyne reductive functionalization