Results 31 to 40 of about 77,236 (141)

Theoretical study on the Diels-Alder reaction of bromo-substituted 2H-pyrane-2-ones and some substituent vinyls [PDF]

Journal of the Serbian Chemical Society, 2015
A DFT study of the reactivity, regio- and stereoselectivity of Diels-Alder reaction between 3-bromo, 5-bromo, and 3,5-dibromo-2(H)-pyran-2-ones and some weakly activated and unactivated alkenes has been carried out using density functional ...
Haghdadi Mina, Amani Hamed, Nab Nasim
doaj   +1 more source

Thermodynamic and Kinetic Study of Diels–Alder Reaction between Furfuryl Alcohol and N-Hydroxymaleimides—An Assessment for Materials Application

Molecules, 2020
The study of Diels−Alder reactions in materials science is of increasing interest. The main reason for that is the potential thermoreversibility of the reaction.
Jamerson Carneiro de Oliveira, Marie-Pierre Laborie, Vincent Roucoules   +2 more
doaj   +1 more source

Highly Regio-, Enantio-, and Exo-selective Diels–Alder Reactions Enabled by a Bispyrrolidine Diboronate [PDF]

, 2021
Catalytic asymmetric Diels−Alder reaction is one of the most powerful reactions in organic chemistry. It is still a challenge to achieve high and general exo-selectivity.
Jia-Hua, Chen, Bo, Xiao, Tian-Yu, Sun, Yun-Dong, Wu, Yuan-He, Li, Su-Lei, Zhang, Zhen, Yang   +6 more
core   +2 more sources

Focused Ultrasound-Mediated Release of Bone Morphogenetic Protein 2 from Hydrogels for Bone Regeneration

Gels
An ultrasound-responsive hydrogel system was developed that provides on-demand release when stimulated by focused ultrasound (fUS). Diels–Alder cycloadducts crosslinked polyethylene glycol (PEG) hydrogels and underwent a retrograde Diels–Alder reaction ...
Tyus J. Yeingst, Angelica M. Helton, Ferdousi S. Rawnaque, Julien H. Arrizabalaga, Dino J. Ravnic, Julianna C. Simon, Daniel J. Hayes   +6 more
doaj   +1 more source

Ionic-Liquid-Mediated MacMillan’s Catalyst for Diels-Alder Reaction

Journal of Chemistry, 2013
Ionic liquids were used to enhance as well as recycle the MacMillan's catalyst 1 for the Diels-Alder reaction. Using our developed protocol, Diels-Alder adducts were obtained in good yields and selectivities along the 6 times recycling of MacMillan's ...
Vivek Srivastava
doaj   +1 more source

Novos materiais poliméricos furânicos baseados na reacção reversível de Diels-Alder [PDF]

, 2011
Doutoramento em QuímicaA futura e inevitável escassez dos recursos fósseis, juntamente com o aumento imprevisível dos seus preços, levou, nas últimas décadas, a um aumento impressionante de iniciativas dedicadas não só à procura de fontes alternativas
Coelho, Dora Salomé Correia
core  

How Lewis Acids Catalyze Diels–Alder Reactions [PDF]

, 2020
The Lewis acid(LA)-catalyzed Diels–Alder reaction between isoprene and methyl acrylate was investigated quantum chemically using a combined density functional theory and coupled-cluster theory approach.
Israel Fernández, Pascal Vermeeren, Bickelhaupt, F.M., Fernández, Israel, Bickelhaupt, Matthias, Bickelhaupt, F. Matthias, Trevor A. Hamlin, Vermeeren, Pascal; id_orcid, Hamlin, Trevor, Fernández López, Israel, Hamlin, Trevor A.; id_orcid, Fernandez, I., F. Matthias Bickelhaupt, Vermeeren, Pascal, Hamlin, Trevor A.   +14 more
core   +1 more source

The use of optically active O-alkyl ester hydrochlorides of L-phenylalanine and L-tyrosine as chiral micellar media for the catalysis of diels-alder reactions

Bulletin of the Chemical Society of Ethiopia, 2018
The effect of a range of O-alkyl ester hydrochloride surfactants derived from L-phenylalanine and L-tyrosine as catalysts on the Diels-Alder reaction between cyclopentadiene and methyl acrylate was studied.
P. Caumul, P. Koonja, N. Namooya, A. Prayag, N. Joondan, S. Jhaumeer-Laulloo   +5 more
doaj   +1 more source

Data on production and characterization of melamine-furan-formaldehyde particles and reversible reactions thereof

Data in Brief, 2019
The data present in this article affords insides in the characterization of a newly described bi-functional furan-melamine monomer, which is used for the production of monodisperse, furan-functionalized melamine-formaldehyde particles, as described in ...
Katharina Urdl, Stephanie Weiss, Günter Hesser, Andreas Kandelbauer, Edith Zikulnig-Rusch, Uwe Müller, Wolfgang Kern   +6 more
doaj   +1 more source

Highly selective Diels–Alder and Heck arylation reactions in a divergent synthesis of isoindolo- and pyrrolo-fused polycyclic indoles from 2-formylpyrrole

Beilstein Journal of Organic Chemistry, 2020
A highly regio-, chemo- and stereoselective divergent synthesis of isoindolo- and pyrrolo-fused polycyclic indoles is herein described, starting from 2-formylpyrrole and employing Diels–Alder and Heck arylation reactions. 3-(N-Benzyl-2-pyrrolyl)acrylates
Carlos H. Escalante, Eder I. Martínez-Mora, Carlos Espinoza-Hicks, Alejandro A. Camacho-Dávila, Fernando R. Ramos-Morales, Francisco Delgado, Joaquín Tamariz   +6 more
doaj   +1 more source