Results 81 to 90 of about 433,597 (216)

Modeling NMR parameters by DFT methods as an aid to the conformational analysis of cis-fused 7a(8a)-methyl octa(hexa)hydrocyclopenta[d][1,3]oxazines and [3,1]benzoxazines

, 2003
The energies of the preferred conformations of four 7a-methyl octa(or hexa)hydrocyclopenta[d][1,3]-oxazines, five 8a-methyl octa(or hexa)hydro[3,1]benzoxazines, and 8a-methyl hexahydro[1,3]benzoxazinone, all cis-fused, were investigated by DFT methods ...
BAGNO, ALESSANDRO, TAHTINEN P, KLIKA KD, PIHLAJA K.   +3 more
core   +1 more source

Recent advances in bio-based polybenzoxazines as an interesting adhesive coating. [PDF]

RSC Adv, 2023
Klfout HA, Asiri AM, Alamry KA, Hussein MA.   +3 more
europepmc   +1 more source

Low-Temperature Terpolymerizable Benzoxazine Monomer Bearing Norbornene and Furan Groups: Synthesis, Characterization, Polymerization, and Properties of Its Polymer. [PDF]

Molecules, 2023
Lu Y, Peng Y, Yang Y, Liu J, Zhang K.
europepmc   +1 more source

Synthetic, biocatalytic acetylation and anti-tuberculosis activity evaluation studies on (±) -4-alkyl-3,4-dihydro-3-ω-hydroxyalkyl-2H-1 ,3-benzoxazines^¶

, 2003
1958-1969Five novel (±)-4-alkyl-3,4-dihydro-3-ω-hydroxyalkyl-2H-1,3-benzoxazines have been synthesized by Mannich-type condensation of N-ω-hydroxyalkyl, N-[1-(2-hydroxypheny l)ethyl/propyl]amine and formaldehyde in 55 to 60% yields. Porcine pancreatic
Cholli, Ashok L, Samuelson, Lynne A, Watterson, Arthur C, Shakil, Najam A, Olsen, Carl E, Kumar, Vijayendra, Sharma, Nawal K, Kumar, Sujeet, Prasad, Ashok K, Bose, Mridula, Raj, Hanumantharao G, Parmar, Virinder S, Dhawana, Ashish, Kumar, Jayant   +13 more
core  

Novel Latent Catalyst for Ring-Opening Polymerization of 1,3-Benzoxazines Triggered by a Dual Ionic/Non-ionic Monomer Partnership

We report unraveling the catalytic effect of N-activated benzoxazine monomers on the ring-opening polymerization of simple 1,3-benzoxazine. A novel series of ionic and neutral benzoxazine monomer couples were synthesized and thoroughly characterized ...
Aleksandra Marszałek-Harych (5477972), Anna Gągor (1319547), Jolanta Ejfler (2536279), Magdalena Stępień (4050220), Małgorzata Gazińska (9425663), Łukasz John (1851997)   +5 more
core   +2 more sources

A Fluorine-Containing Main-Chain Benzoxazine/Epoxy Co-Curing System with Low Dielectric Constants and High Thermal Stability. [PDF]

Polymers (Basel), 2023
Zhang T, Zhang W, Ding Z, Jiao J, Wang J, Zhang W.   +5 more
europepmc   +1 more source

Novel synthesis of fused ring [l,4]benzothiazines/[1,4 ]benzoxazines and related heterocycles

, 2000
65-67The interaction of 1,3-disubstituted-5-bromo-2-thioxo-barbituric acid with o-aminothiophenols and o-aminophenol affords 5, 7-disubstituted-8-oxo-6-thioxo-pyrimido[5, 4-b](l, 4) benzothiazines and 5,7-disubstituted-8-oxo-6-thioxo-pyrimido[5,4-b ...
Chande, Madhukar S, Sugdare, Vijay V
core  

Mass spectral behaviour of some octahydro-1,3- and -3,1-benzoxazines with a heteroaryl-substituted phenyl substituent at ring position 2+

, 1998
The 70 eV mass spectra of tell octahydro-1,3- and -3,:-benzoxazines with a heteroaryl-substituted phenyl group at ring position 2 were recorded in order to establish the effects of heteroaryl substituents on the fragmentation patterns.
Fülöp Ferenc, Forró Enikő, Vainiotalo Pirjo   +2 more
core  

Synthesis of α,α-Diaryl-α-amino Acid Precursors by Reaction of Isocyanoacetate Esters with o-Quinone Diimides. [PDF]

Org Lett, 2023
Laviós A, Martínez-Pardo P, Sanz-Marco A, Vila C, Pedro JR, Blay G.   +5 more
europepmc   +1 more source

Thermomechanical Behavior of Biobased Benzoxazine: Structure-Property Relationship and Role of Aromatic Side Groups. [PDF]

ACS Omega
Khan MFZ, Abels G, Hartwig A, Koschek K.
europepmc   +1 more source