作者:Manwar, Rina Raju、Balamurugan, Rengarajan
DOI:10.1002/chem.202401905
日期:——
demonstrated as olefinating agents in the silver-catalyzed olefination of aryl and cinnamyl aldehydes to make α,β- and α,β,γ,δ-unsaturated esters with excellent E-selectivity. Trimethyl orthoformate plays a dual role by generating nucleophilic allenolate from propiolate and more electrophilic oxocarbenium ion from aldehyde to effect the reaction.
丙炔酯已被证明可以作为银催化芳基醛和肉桂醛烯化反应中的烯化剂,以制备具有优异E选择性的 α,β- 和 α,β,γ,δ-不饱和酯。原甲酸三甲酯发挥双重作用,通过从丙炔酸生成亲核联烯酸和从醛生成更具亲电性的氧碳鎓离子来实现反应。