Results 61 to 70 of about 16,127 (272)

Isoquinolin-5-amine

Acta Crystallographica Section C Crystal Structure Communications, 2012
The title compound, C9H8N2, presents two almost identical independent molecules in the asymmetric unit, both of them exhibiting an extremely planar isoquinoline core (maximum r.m.s. deviation = 0.014 Å). The most significant deviation is found in the –NH2groups, which present a noticeable pyramidalization around the N atom, a feature also present in ...
Maria Atria, Ana, Teresa Garland, Maria, Baggio, Ricardo   +2 more
openaire   +5 more sources

Polyoxometalate Imide‐Linked Molecules, Covalent Organic Polymers, and Frameworks: Dimensionality Effects on Supercapacitors Performance

Advanced Sustainable Systems, EarlyView.
This study explores polyoxometalate‐based hybrids with varying dimensionalities, linking molecular, polymeric, and framework structures to supercapacitor performance. The results highlight how structural tuning enhances surface area, porosity, and charge transport, offering insights into designing efficient energy storage materials.
Daria Nowicka, Verónica Montes‐García, Aleksandra Sikora, Violetta Patroniak, Adam Gorczyński, Dawid Pakulski, Artur Ciesielski   +6 more
wiley   +1 more source

Stereochemical studies on protonated bridgehead amines. ^1H NMR determination of cis and trans B-C ring-fused structures for salts of hexahydropyrrolo [2,1-a] isoquinolines and related C ring homologs. Capture of unstable ring-fused structures in the solid state [PDF]

, 1989
Acid-addition salts of tricyclic isoquinolines 2a/b, 3a/b, 4a-4c, 5, 6a/b, 7, 8a/b, 9a/b, and 17a/b were studied by high-field ^1H NMR in CDCl_3 solution.
Inners, Ruth R., Maryanoff, Bruce E., Mayo, Stephen L., McComsey, David F., Mutter, Martin S., Olofson, R. A., Wooden, Gary P.   +6 more
core  

Piano‐Stool Rhodium(V) and Rhodium(IV) Intermediates in C─H Functionalization and B─H Functionalization: Mechanistic Insights and Emerging Reactivity

Asian Journal of Organic Chemistry, EarlyView.
High‐valent Rh(IV) and Rh(V) species have been invoked to rationalize enhanced catalytic reactivity. This review examines evidence for both, emphasizing reactions proceeding through the Rh(III)/Rh(IV)/Rh(II) cycle. While Rh(V) intermediates are computationally supported, experimental evidence is limited; Rh(IV) species are supported by both theory and ...
Yujie Cao, Arnav Kacker, Kevin G. M. Kou
wiley   +1 more source

The Cyclisation of l-Aryl-2-Benzamidoalkan-l-Ols to 4,5-DihydroOxazoles or Isoquinolines [PDF]

, 1990
The cyclisation of several N-benzoyl derivatives of 2-amino-l-phenylpropan-l-ol w~e carried out employing the Pictet-Cams modification ofthe BischlerNapieralski reaction. The formation of4, 5-dihydro-oxazoles orisoquinolines depends on the substituents
Md. Sharif, Atan, O. Fitton, Alan
core  

Stereoselective cycloaddition of 1-glucosyl-1,3-butadienes with tert-butyl 2H-azirine-3-carboxylate, glyoxylates and imines [PDF]

, 2003
Glucosyl dienes 1 have been reacted with the achiral 2H-azirine 4 and with glyoxylates, forming fused structures of type 5 and disaccharide-like compounds 7 with good to excellent selectivity.
Almeida, I. G., Alves, M. José, Fortes, A. Gil, Freitas, A. P.   +3 more
core   +1 more source

Asymmetric Electrophilic alpha-Amidoalkylation, VII1): Generation, Crystal Structure, and Trapping Reactions of a Chiral 6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline Derived N-Acyliminium Ion [PDF]

, 1990
The camphanic acid amide 4 has efficiently been oxidized with triphenylcarbenium tetrafluoroborate (3) to yield the chiral N-acyliminium ion 1. Trapping reactions of 1 with the silyl nucleophiles 7a-c and 10a-f proceeded with stereoselective bond ...
Aledesanmi, Brossi, Brossi, Huber, Kametani, Nagasaka, Onda, Palasz, Shono, Stupnikova, Wanner, Wanner, Wanner, Wanner, Yamato, Zaugg   +15 more
core   +1 more source

Rapid Discovery of Pyrido[3,4- d ]pyrimidine Inhibitors of Monopolar Spindle Kinase 1 (MPS1) Using a Structure-Based Hybridization Approach [PDF]

, 2016
Monopolar spindle 1 (MPS1) plays a central role in the transition of cells from metaphase to anaphase and is one of the main components of the spindle assembly checkpoint.
Baker, R, Blagg, J, Box, G, Burke, R, Cronin, N, De Haven Brandon, A, Eccles, SA, Faisal, A, Hayes, A, Henley, AT, Hoelder, S, Innocenti, P, Linardopoulos, S, Mak, GW-Y, Matijssen, B, Naud, S, O’Fee, L, Raynaud, FI, Roberts, J, Saville, H, Schmitt, J, Solanki, S, Valenti, M, van Montfort, RLM, Westwood, IM, Woodward, HL   +25 more
core   +2 more sources

Anti-Inflammatory Activity of Alkaloids: An Update from 2000 to 2010

Molecules, 2011
Many natural substances with proven anti-inflammatory activity have been isolated throughout the years. The aim of this review is to review naturally sourced alkaloids with anti-inflammatory effects reported from 2000 to 2010.
Margareth de Fátima Formiga Melo Diniz, José Maria Barbosa Filho, Petrônio Filgueiras de Athayde-Filho, Marcelo Sobral da Silva, Josean Fechine Tavares, Augusto Lopes Souto   +5 more
doaj   +1 more source

Oxidative Dehydrogenation of N-Heteroaromatic Alkyl Alcohols and Amines Facilitated by Dearomative Tautomerization. [PDF]

Chemistry
N‐heteroaromatic alkyl alcohols and amines are inherently unstable in acidic and/or basic solution due to an irreversible dehydrogenation that proceeds from a minority tautomer. In many cases, this reaction results in quantitative oxidation to the corresponding aldehyde, providing a simple, convenient, and green approach for preparing versatile ...
Ghasemloo O, Hasselbrink CL, Cardona DD, DeBoef B, Hayes D.   +4 more
europepmc   +2 more sources