Visible Light Photocatalysis of [2+2] Styrene Cycloadditions by Energy Transfer
作者:Zhan Lu、Tehshik P. Yoon
DOI:10.1002/anie.201204835
日期:2012.10.8
Hip to be square: Styrenes participate in [2+2] cycloadditions upon irradiation with visible light in the presence of an iridium(III) polypyridyl complex. In contrast to previous reports of visible light photoredox catalysis, the mechanism of this process involves photosensitization by energy transfer and not electron transfer.
An exceptionally stable carbocation from indene generated and trapped within Ca Y zeolite
作者:K. Pitchumani、V. Ramamurthy
DOI:10.1039/cc9960002763
日期:——
Inclusion of indene within activated Ca Y zeolite generates a persistent dimer carbocation; the chemistry that occurs within the supercages of Ca Y is controlled by the number of Brønsted acidic sites that are generated during the activation process.
在活化的 Ca Y 沸石中加入茚会产生持久的二聚碳位;在 Ca Y 超笼子中发生的化学反应受活化过程中产生的布氏酸性位点数量的控制。
Redox-photosensitized reactions. 7. Aromatic hydrocarbon-photosensitized electron-transfer reactions of furan, methylated furans, 1,1-diphenylethylene, and indene with p-dicyanobenzene