Chemically Triggered Synthesis, Remodeling, and Degradation of Soft Materials
作者:Xiaolong Sun、Malgorzata Chwatko、Doo-Hee Lee、James L. Bachman、James F. Reuther、Nathaniel A. Lynd、Eric V. Anslyn
DOI:10.1021/jacs.9b12122
日期:2020.2.26
Polymertopology dictates dynamic and mechanical properties of materials. For most polymers, topology is a static characteristic. In this article, we present a strategy to chemically trigger dynamic topology changes in polymers in re-sponse to specific chemical stimulus. Starting with a dimerized PEG and hydrophobic linear materials, a lightly cross-linked polymer, and a cross-linked hydrogel, transformations
Synthesis of Bisalkylthiolydine Derivatives of Meldrum's Acid and Barbituric Acid
作者:Xian Huang、Bang-Chi Chen
DOI:10.1055/s-1986-31842
日期:——
Meldrum's acid and barbituric acid were condensed with carbon disulfide in the presence of triethylamine and subsequently alkylated with alkyl halides to give the corresponding bisalkylthioylidene derivatives.