Tetraethylammonium iodide catalyzed synthesis of diaryl ketones via the merger of cleavage of C–C double bonds and recombination of aromatic groups
作者:Xianghua Zeng、Daqian Xu、Chengxia Miao、Chungu Xia、Wei Sun
DOI:10.1039/c4ra08764j
日期:——
An efficient method for synthesizing diaryl ketones via merging of oxidative cleavage of C–C doublebonds and recombination of aromatic groups is developed with Et4NI (2.5 mol%) as the catalyst and NaIO4 as the oxidant. The control experiments provide valuable mechanistic insights into the formation of diaryl ketones, and suggest that NaIO4 serves as an epoxidation and nucleophilic deformylation reagent
Ligand-controlled iridium-catalyzed semihydrogenation of alkynes with ethanol: highly stereoselective synthesis of <i>E</i>- and <i>Z</i>-alkenes
作者:Jinfei Yang、Chengniu Wang、Yufeng Sun、Xuyan Man、Jinxia Li、Fei Sun
DOI:10.1039/c8cc09714c
日期:——
iridium-catalyzed semihydrogenation of alkynes to E- and Z-alkenes with ethanol was developed. Effective selectivity control was achieved by ligand regulation. The use of 1,2-bis(diphenylphosphino)ethane (DPPE) and 1,5-cyclooctadiene (COD) was critical for the stereoselective semihydrogenation of alkynes. The general applicability of this procedure was highlighted by the synthesis of more than 40 alkenes, with
Molchanov, A. P.; Kostikov, R. R., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 6.1, p. 935 - 937
作者:Molchanov, A. P.、Kostikov, R. R.
DOI:——
日期:——
Electrophilic bromination of aromatic conjugated olefins. II. Mechanism of the dual-path additions in stilbene bromination. Evidence from multiple substituent effects for carbonium ion intermediates
作者:Jacques Emile Dubois、Marie Francoise Ruasse
DOI:10.1021/jo00943a019
日期:1973.2
USE OF APPENDED DYES IN OPTICAL DATA STORAGE MEDIA
申请人:Natarajan Arunkumar
公开号:US20120052232A1
公开(公告)日:2012-03-01
The present disclosure relates to optical media and the formation and use of such media. In certain embodiments the optical media or a composition suitable for such media includes a polymeric matrix or substrate. A dye, such as an energy transfer dye is chemically appended to the polymeric matrix or substrate, such as by one or more covalent bonds.