24041-60-9Relevant articles and documents
Preparation of crystalline (diisopinocampheyl)borane
Abbott, Jason R.,Allais, Christophe,Roush, William R.
, p. 26 - 37 (2016/08/27)
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Synthesis and ultraviolet absorption characteristics of 4-arylidene isopinocamphones from α-pinene
Wang, Jia-Y.U.,Wang, Peng-N.A.,Yang, Jin-Lai,Shen, Jia,Xu,Wang, Shi-F. A.
, p. 7779 - 7784 (2015/02/02)
A new series of 4-arylidene isopinocamphones were synthesized from α-pinene which is a natural chemical from pine tree and their ultraviolet absorption characteristics were investigated. (+)Isopinocamphone was obtained from α-pinene by hydroboration-oxidation and then it was reacted with benzaldehyde, p-methylbenzaldehyde, p -methoxybenzaldehyde, p-chlorobenzaldehyde, furfural and p -nitrobenzaldehyde in the presence of alkali catalysts to get 4-arylidene isopinocamphones including 2-benzylidene-4,6,6-trimethylbicyclo[3.1.1]heptan-3-one (1), 2,6,6-trimethyl-4-(4-methyl benzyl)bicyclo[3.1.1]heptane-3-one (2), 2-(4-methoxybenzylidene)-4,6,6-trimethylbicyclo[3.1.1] heptan-3-one ( 3 ), 2-(4-chlorobenzylidene)-4,6,6-trimethylbicyclo[3.1.1]heptan-3-one (4 ), 2-(furan-2-methylene)-4,6,6-trimethylbicyclic [3.1.1] heptane-3-one (5) and 2,6,6-trimethyl-4-(4-nitrobenzylidene)bicyclo[3.1.1]heptan-3-one (6). he structures of 4-arylidene isopinocamphones were determined by FT-IR, 1H NMR, 13/C NMR and GC-MS technique. Their ultraviolet absorption characteristics and light stability was further examined. The results showed that compounds 1 , 2, 3 and 5 could be used as Btype UV absorbents, compounds 4 and 6 could be used as A-type UV absorbents and compounds 6 had both functions as UV-A and UVB types absorbents. The light stability sequence of these compounds was (2 ) > (1) ≈ (3) ≈ (4) ≈(6) > (5).
Use of immobilized transition metal complexes as recyclable catalysts for oxidation reactions with hydrogen peroxide as oxidant
Islam, Sk Manirul,Mobarok, Manir,Mondal, Paramita,Roy, Anupam Singha,Salam, Noor,Hossain, Dildar,Mondal, Sanchita
experimental part, p. 97 - 107 (2012/09/22)
A tetradentate Schiff base (teta), obtained from triethylenetetramine and salicylaldehyde, has been covalently bonded to divinylbenzene cross-linked chloromethylated polystyrene. This chelating ligand, abbreviated as PS-teta (PS = polymeric support), reacts with metal chlorides (Cu2+, Co 2+, and Ni2+) in methanol to give polymerbound transition metal complexes, PS-Cu(II)teta/(Cat-1), PS-Ni(II)teta/(Cat-2), and PS-Co(II)teta/(Cat-3), formation of which has been established by various physiochemical methods and spectroscopic techniques. The catalytic potential of these materials has been tested for the oxidation of various alkenes, alkanes, alcohols, and thioethers in the presence of 30% H2O2 as an oxidant. At the same time, these catalysts are very stable and could be reused in oxidation reactions for more than five times without noticeable loss of their catalytic activity. Springer Science+Business Media B.V. 2011.