@article { ISI:000248145900007, title = {MgBr2-mediated ionic Diels-Alder reaction of acetals of alpha,beta-unsaturated aldehydes and ketones with 1,3-dienes}, journal = {Synthetic Communications}, volume = {37}, number = {14}, year = {2007}, month = {JUL}, pages = {2337-2343}, publisher = {TAYLOR \& FRANCIS INC}, type = {Article}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

A facile, mild, and efficient methodology for the ionic Diels-Alder reaction of acetals of alpha,beta-unsaturated ketones and aldehydes as dienophiles with various 1,3- dienes employing MgBr2 as the Lewis acid catalyst to furnish corresponding Diels-Alder adducts at ambient temperature is described.

}, keywords = {acetals, Catalysts, Diels-Alder reactions, dienes}, issn = {0039-7911}, doi = {10.1080/00397910701410814}, author = {Chavan, Subhash P. and Ethiraj, Krishna S. and Dantale, Shubhada W.} } @article { ISI:000253366100001, title = {Rare earth metal triflates promoted diels-alder reactions in ionic liquids}, journal = {Applied Catalysis A-General}, volume = {335}, number = {1}, year = {2008}, month = {FEB}, pages = {1-6}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Rare earth metal triflates, when used with ionic liquids can promote Diels-Alder reactions carried out with different dienes and dienophiles suggesting an enhancement in the catalytic power of the triflates in ionic liquids. It is possible to recover and reuse the ionic liquid phase with triflates to give comparable yields and stereoselectivities even after six cycles. (C) 2007 Elsevier B.V. All rights reserved.

}, keywords = {Diels-Alder reactions, ionic liquids, rare earth metal triflates}, issn = {0926-860X}, doi = {10.1016/j.apcata.2007.10.026}, author = {Sarma, Diganta and Kumar, Anil} } @article { ISI:000307351500021, title = {High viscosity of ionic liquids causes rate retardation of Diels-Alder reactions}, journal = {Science China-Chemistry}, volume = {55}, number = {8, SI}, year = {2012}, month = {AUG}, pages = {1633-1637}, publisher = {SCIENCE PRESS}, address = {16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA}, abstract = {

Second order rate constants, k (2) have been determined for three bi-molecular Diels-Alder reactions to demonstrate that the high viscosity of ionic liquids can be a detrimental property in carrying out Diels-Alder reactions, if ionic liquids are employed as solvent media. It is possible to enhance the reaction rates of the reaction if a co-solvent is mixed in pure ionic liquid used as a solvent.

}, keywords = {Diels-Alder reactions, ionic liquids, kinetics, viscosity}, issn = {1674-7291}, doi = {10.1007/s11426-012-4684-9}, author = {Kumar, Anil and Pawar, Sanjay S.} }