Acid generator compounds are provided that are particularly useful as photoresist composition components. Preferred acid generators include cyclic sulfonium compounds that comprise a covalently linked acid-labile group.
Stereoselective synthesis of vinylphosphonates and phosphine oxides via silver-catalyzed phosphorylation of styrenes
作者:Qingwen Gui、Liang Hu、Xiang Chen、Jidan Liu、Ze Tan
DOI:10.1039/c5cc04826e
日期:——
An efficient and stereoselectivesynthesis of vinylphosphonates and phosphine oxides was developed starting from styrenes using AgNO3 as the catalyst and K2S2O8 as the oxidant. Various vinyl-phosphonates and phosphine oxides were synthesized in good yields with excellent regioselectivity.
从苯乙烯开始,使用AgNO 3作为催化剂,K 2 S 2 O 8作为氧化剂,开发了一种有效的立体选择性合成乙烯基膦酸酯和氧化膦的方法。以良好的产率和优异的区域选择性合成了各种乙烯基膦酸酯和氧化膦。
Iodothiocyanation/Nitration of Allenes with Potassium Thiocyanate/Silver Nitrite and Iodine
作者:Xiaodong Yang、Yue She、Ya Chong、Huichun Zhai、He Zhu、Baohua Chen、Guosheng Huang、Rulong Yan
DOI:10.1002/adsc.201600304
日期:2016.10.6
Direct strategies for the iodothiocyanation and iodonitration of allenes have been developed. In this process, potassium thiocyanate/silver nitrite and molecular iodine are used as the source of SCN, ONO2 and iodine to provide the desired products in moderate to good yields with high stereoselectivity.
Palladium/Acid Relay Catalyzed Tandem Heck Coupling/6‐Endo Cyclization between ortho‐Halogenated Benzoates and Unactivated Terminal Alkenes for the Synthesis of 1‐Isochromanones
We report a unique and expeditiousroute to synthesize 1‐isochromanone derivatives through palladium catalyzed tandem Heck coupling/6‐endo hydroacyloxylation cyclization between readily available ortho‐halogenated benzoates and unactivated alkenes. Various 2‐bromo or 2‐iodo benzoates can be coupled efficiently with a broad range of alkenes to afford functionalized 1‐isochromanones in high yields. Significantly
A convenient access to allylic triflones with allenes and triflyl chloride in the presence of (EtO)<sub>2</sub>P(O)H
作者:Jixiang Ni、Yong Jiang、Zhenyu An、Jingfeng Lan、Rulong Yan
DOI:10.1039/c9cc03096d
日期:——
A simple method for the preparation of allylic triflones from allenes and triflyl chloride in the presence of (EtO)2P(O)H has been developed. The features of this reaction are catalyst-free and simple starting substrates. This method tolerates diverse functional groups and substituted allylic triflones are obtained in moderate to good yields.