Results 101 to 110 of about 20,891 (238)
SynOpen, 2018 A facile, efficient and atom-economic synthesis of highly substituted benzo[h]qninolines was established by reaction of 2-methyl-5-nitrobenzonitrile with suitably functionalized 2H-pyran-2-ones under basic conditions.
Rahul Panwar +4 more
doaj +1 more source
Photochromic carbazole photoinitiators for precision visible‐light photopolymerization
Polymer International, Volume 75, Issue 8, Page 722-728, August 2026.New carbazole–naphthopyran derivatives were employed as visible‐light‐activated photoinitiators, enabling rapid and localized radical photopolymerization to produce well‐defined thin solid objects within minutes. Abstract Two carbazole derivatives, each incorporating a naphthopyran unit and an aromatic ketone, were synthesized and evaluated as ...
Mauro Magalhães +3 more
wiley +1 more source
Small, Volume 22, Issue 43, 3 August 2026.This work demonstrates high‐performance solution‐processed NIR OPDs using DTP‐ and DTTP‐based NFAs (OC and SC), where donor‐core engineering enables tunable absorption and balanced optoelectronic properties; notably, DTP‐based devices achieve broad NIR response, low dark current, and high detectivity, highlighting their potential for advanced NIR ...
Jong‐Woon Ha +11 more
wiley +1 more source
, 2007 An expeditious synthesis of highly substituted benzenes with electron-withdrawing or electron-donating substituents is described and illustrated by carbanion-induced ring transformation of 2H-pyran-2-one with malononitrile in excellent yield.
Vijay Kumar +5 more
core +1 more source
Synthesis of a 4H-anthra[1,2-b]pyran Derivative and its Antimicrobial activity
Natural Product Communications, 2011 The five-step synthesis of the new 4 H -anthra[1,2- b ]pyran derivative 1 is reported. The key steps in this approach included a Marschalk alkylation of 1,4-dihydroxyanthraquinone followed by a Baker–Venkataraman reaction and then an acid-catalyzed ...
Hidayat Hussain +3 more
doaj +1 more source
Stimulation of Antibody Formation by Pyran Copolymer
Experimental Biology and Medicine, 1970 SummaryPyran copolymer, administered with sheep red blood cells to mice, enhances the early rate of appearance of antibody-forming spleen cells. Although the cytotoxicity and pyrogenicity of pyran and bacterial endotoxins are similar, pyran, in contrast to endotoxin, does not trigger a nonspecific initiation of antibody formation; it only enhances ...
W, Braun +3 more
openaire +2 more sources
Resilience of floral scent emission after florivory
Plant Biology, Volume 28, Issue 5, Page 1491-1506, August 2026.Florivory is thought to affect floral traits, impacting pollination. However, our data suggest a stability in post‐florivory scent emission, which may guarantee the maintenance of pollinator visitation regardless of florivory, indicating a resilience of natural systems with multiple and simultaneous interactions. Created in BioRender. Tunes, P.
P. Tunes +4 more
wiley +1 more source
A Novel and Highly Stereoselective Synthesis of 2-Substituted Perhydrofuro[2,3-b]pyran Derivatives [PDF]
, 2011 An effective and facile method for the synthesis of 2-substituted perhydrofuro[2,3-b]pyran derivatives Is described. The cyclization of 2-C-aldehydo-2-deoxy-D-thioglucoside in the presence of N-iodosuccinimide (NIS) is highly stereoselective.
Tian, Qiang +5 more
core
2-Amino-5-oxo-4-(thiophen-2-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile
IUCrDataThe crystal structure of the title compound, C14H12N2O2S, reveals two symmetrically independent molecules within the asymmetric unit. Each molecule contains a chromenone core attached to a 2-thiophene ring, cyano, and amino groups.
Carren Nyapola +3 more
doaj +1 more source
5-Amino-7-(3-chlorophenyl)-3,7-dihydro-2H-thieno[3,2-b]pyran-6-carbonitrile 1,1-dioxide
Acta Crystallographica Section E, 2010 The title compound, C14H11ClN2O3S, with fused thiophene and pyran rings, was synthesized via the condensation of dihydrothiophen-3(2H)-one 1,1-dioxide and 2-(3-chlorobenzylidene)malononitrile catalysed by triethylamine in ethanol.
Shi-De Shen +4 more
doaj +1 more source