Molecular Behaviors of Formaldehyde Encapsulated in Supercages of Zeolite NaY with Different Loadings and its Intrinsic Reactivity for the Carbonyl-ene Reaction with <i>α</i>-Methylstyrene
作者:Kei-ichi Sato、Yoichi Masui、Makoto Onaka
DOI:10.1246/bcsj.20170252
日期:2017.12.15
formaldehyde (HCHO) adsorbed in the supercages of zeolite NaY toward α-methylstyrene for the carbonyl-ene reaction was very dependent on the loading amount of HCHO in the NaY pores. We first prepared a series of NaY samples with different amounts of HCHO, and applied them to the carbonyl-ene reaction with excess amounts of α-methylstyrene to evaluate their intrinsic reactivities. It was found that one formaldehyde
Carboxylative Cyclization of 2-Butenoates with Carbon Dioxide: Access to Glutaconic Anhydrides
作者:Ke Zhang、Wen-Zhen Zhang、Xue-Yan Tao、Min Zhang、Wei-Min Ren、Xiao-Bing Lu
DOI:10.1021/acs.joc.0c01717
日期:2020.9.4
Cyclic anhydrides are versatile synthons and functional comonomers. Herein, we reported an organic base-promoted carboxylative cyclization of 2-butenoates with carbon dioxide to produce important glutaconic anhydrides in good yields. This metal-free reaction showed broad substrate scopes and proceeded under mild reaction conditions.