2015-58-9Relevant academic research and scientific papers
Metal catalyzed tandem Diels-Alder/hydrolysis reactions of 2-boron-substituted 1,3-dienes
Wang, Liqiong,Welker, Mark E.
, p. 15 - 18 (2013)
2-Boron substituted 1,3-dienes have been prepared and used in experiments to demonstrate that it is possible to effect metal catalyzed Diels-Alder/hydrolysis tandem reactions. The boron substituted dienes are treated with dienophiles in toluene:alcohol so
Rhodium catalyzed tandem Diels-Alder/hydrolysis reactions of 2-boron-substituted 1,3-dienes
De, Subhasis,Solano, John M.,Wang, Liqiong,Welker, Mark E.
, p. 2295 - 2298 (2009)
2-Boron substituted 1,3-dienes have been prepared and used in preliminary experiments to demonstrate that it is possible to effect rhodium catalyzed Diels-Alder/hydrolysis tandem reactions.
Small-Molecule Investigation of Diels-Alder Complexes for Thermoreversible Crosslinking in Polymeric Applications
Rowlett, Jarrett R.,Deglmann, Peter,Sprafke, Johannes,Roy, Nabarun,Mülhaupt, Rolf,Bruchmann, Bernd
, p. 8933 - 8944 (2021/07/20)
Combinations of dienes and dienophiles were examined in order to elicit possible combinations for thermoreversible crosslinking units. Comparison of experimental results and quantum calculations indicated that reaction kinetics and activation energy were much better prediction factors than change in enthalpy for the prediction of successful cycloaddition. Further testing on diene-dienophile pairs that underwent successful cycloaddition determined the feasibility of thermoreversibility/retro-reaction of each of the Diels-Alder compounds. Heating and testing of the compounds in the presence of a trapping agent allowed for experimental determination of reverse kinetics and activation energy for the retro-reaction. The experimental values were in good agreement with quantum calculations. The combination of chemical calculations with experimental results provided a strong insight into the structure-property relationships and how quantum calculations can be used to examine the feasibility of the thermoreversibility of new Diels-Alder complexes in potential polymer systems or to fine-tune thermoreversible Diels-Alder systems already in use.
Synthesis of new cantharimide analogues derived from 3-sulfolene
Tan, Ayse,Koc, Birgul,Sahin, Ertan,Kishali, Nurhan H.,Kara, Yunus
experimental part, p. 1079 - 1084 (2011/06/22)
New types of norcantharimide analogues were prepared by three methods: epoxidation, photooxidation, and bromination. Epoxidation of deoxynorcantharimide with m-chloroperoxybenzoic acid gave an isomeric mixture. The selective formation of the syn-isomers was attributed to dipole-dipole interactions between the peracid and imide moiety. Photooxidation of deoxynorcanthamide gave syn-and anti-hydroperoxide analogues through ene addition of singlet oxygen; the anti-hydroperoxide was the major product in this case, as a result of the steric effect of the imide ring. Bromination of deoxynorcantharimide and subsequent transformations gave a pyrrolidine and the phthalimide core structure. Georg Thieme Verlag Stuttgart.
Imides: Part V - Synthesis of Cyclohex-4-ene-1,2-dicarbodiimides
Aly, N. F.,Fahmy, A. M. F.,Aly, N. Y.
, p. 912 - 913 (2007/10/02)
N-Hydroxy-, and N-aryl-cyclohex-4-ene-1,2-dicarbodiimides (II and III) have been synthesized, and their structures assigned on the basis of PMR and 13C NMR and mass spectra.
