Phase transfer catalysed polymer-supported Wittig reactions
作者:Stephen D. Clarke、Charles R. Harrison、Philip Hodge
DOI:10.1016/s0040-4039(00)74581-3
日期:1980.1
Arylsubstituted olefins can be prepared in high yield using phasetransfer catalysed polymer-supported Wittig reactions.
可以使用相转移催化的聚合物负载的Wittig反应以高收率制备芳基取代的烯烃。
Synthesis and characterization of para-pyridine linked NHC palladium complexes and their studies for the Heck–Mizoroki coupling reaction
作者:Ya-Ming Liu、Yi-Chun Lin、Wen-Ching Chen、Jen-Hao Cheng、Yi-Lin Chen、Glenn P. A. Yap、Shih-Sheng Sun、Tiow-Gan Ong
DOI:10.1039/c2dt30520h
日期:——
This paper describes the synthesis of 1-(pyridine-4-ylmethyl) NHC and their Pd(II) and Ag(I) complexes, which are fully characterized. Interestingly, we have also synthesized a Pd complex 3a-CO33 using a more direct treatment of K2CO3 with PdCl2. 3a-CO33 represents the first reported solid structure of a Pd η2-carbonato complex stabilized by an NHC framework. 3a-CO33 can be easily converted to a PdCl2 derivative by treating it with chloroform. We have found these palladium complexes mediate the HeckâMizoroki coupling with a low catalyst loading. Furthermore, we also expand such catalytic manifold toward constructing fused polyaromatic substrates, a highly useful class of compounds in optoelectronic chemistry.
focussed library of trans-stilbene compounds through Wittig and other base catalysed condensationreactions is presented. The synthesized stilbenes were screened for their inhibitory potential against murine tyrosinase activity to explore the structure activity relationship (SAR). Presence of electron withdrawing group (-CN) at the double bond and hydroxyl group or halogen atom especially at para-position
Malkes,L.Ya. et al., Journal of Organic Chemistry USSR (English Translation), 1965, vol. 1, p. 581 - 583
作者:Malkes,L.Ya. et al.
DOI:——
日期:——
Synthesis and Photochemical Transformations of a Few Olefin-Appended 11,12-Dibenzoyldibenzobarrelenes
作者:Ambily Mary Jacob、Gisha George、Jomon P. Jacob、Eason M. Mathew
DOI:10.3184/174751915x14267013391940
日期:2015.4
Several olefin-appended dibenzobarrelenes have been synthesised by Diels–Alder reaction between 9-alkenylanthracenes and dibenzoylacetylene under carefully controlled conditions and their photochemistry was examined. Olefin appendages acted as efficient quenchers of the triplet state of these barrelenes.