Radical p‐Doping Spiro‐OMeTAD for Efficient, Stable and Self‐Healing Flexible Perovskite Solar Cells
Sign Up to like & getrecommendations! Published in 2025 at "Advanced Materials"
DOI: 10.1002/adma.202417404
Abstract: Spiro‐OMeTAD is the primary hole transport material (HTM) for high‐efficiency and stable flexible perovskite solar cells (FPSCs). However, the slow oxidation rate and susceptibility to film cracking under stress in Spiro‐OMeTAD lead to reduced device… read more here.
Keywords: flexible perovskite; spiro; solar cells; self healing ... See more keywords
Synthesis and SARs study of novel spiro-oxindoles as potent antiproliferative agents with CDK-2 inhibitory activities.
Sign Up to like & getrecommendations! Published in 2023 at "Archiv der Pharmazie"
DOI: 10.1002/ardp.202300185
Abstract: A series of 16 novel spirooxindole analogs 8a-p were designed and constructed via cost-effective single-step multicomponent [3+2] cycloaddition reaction of azomethine ylide (AY) generated in situ from substituted isatin (6a-d) with suitable amino acids (7a-c)… read more here.
Keywords: mcf; novel spiro; synthesis sars; sars study ... See more keywords
Visible‐light‐Mediated Dual Catalytic Spiro Annulation of 2‐Aryl Quinazolin‐4(3H)‐ones with N‐Substituted Maleimides
Sign Up to like & getrecommendations! Published in 2025 at "European Journal of Organic Chemistry"
DOI: 10.1002/ejoc.202500462
Abstract: Visible light‐induced, dehydrogenative spiro annulation of 2‐aryl quinazolin‐4(3H)‐ones with maleimides has been achieved at ambient condition by merging Rh(III)‐catalysis with photo‐redox catalysis. Various spiro‐cyclized quinazolinone derivatives were synthesised with a broad substrate scope in up… read more here.
Keywords: aryl quinazolin; spiro; visible light; spiro annulation ... See more keywords
Novel synthetic approach to non-natural conformationally rigid spiro-linked amino acids
Sign Up to like & getrecommendations! Published in 2019 at "Russian Chemical Bulletin"
DOI: 10.1007/s11172-019-2452-0
Abstract: Abstract1-Aminospiro[2.3]hexane-1,5-dicarboxylic and 1-ammo-5-(ammomethyl)spiro[2.3]hexane-1-carboxylic acids, which are the conformationally rigid analogues of glutamic acid and lysine, respectively, were synthesized from 3-methylidenecyclobutanecarbonitrile. The synthetic route includes a catalytic [1+2]-cycloaddition of ethyl 2-diazo-2-nitroacetate to a double bond of… read more here.
Keywords: novel synthetic; non natural; spiro; approach non ... See more keywords
The synthesis and thermal properties of fluorodioxy-substituted N,N-spiro bridged cyclotriphosphazenes
Sign Up to like & getrecommendations! Published in 2017 at "Polyhedron"
DOI: 10.1016/j.poly.2017.01.014
Abstract: Abstract Fluorodioxy substituted mono-spiro ( 1a , b ), di-spiro ( 2a , b ) and mono-ansa ( 3a – c ) cyclotriphosphazene derivatives were reacted with n -butylamine to obtain fluorodioxy cyclotriphosphazenes bearing a… read more here.
Keywords: synthesis thermal; spiro; thermal properties; fluorodioxy substituted ... See more keywords
A facile one pot C-C and C-N bond formation for the synthesis of spiro-benzodiazepines and their cytotoxicity
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.10.060
Abstract: Abstract An efficient, multicomponent and environmentally benign protocol has been developed for the synthesis of spiro-benzodiazepines through C C and C N bond formations in a single step. This one-pot protocol proceeds via three component… read more here.
Keywords: bond; spiro; spiro benzodiazepines; one pot ... See more keywords
Phosphotungstic acid mediated, microwave assisted solvent-free green synthesis of highly functionalized 2ˈ-spiro and 2, 3-dihydro quinazolinone and 2-methylamino benzamide derivatives from aryl and heteroaryl 2-amino amides
Sign Up to like & getrecommendations! Published in 2019 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2018.12.011
Abstract: Abstract Phosphotungstic acid has been found as green catalyst for the synthesis of spiro and cyclized quinazolinones and 2-amino substituted carboxamide under microwave irradiation and solvent-free condition has been developed. The scope of the reaction… read more here.
Keywords: synthesis; phosphotungstic acid; benzamide; spiro ... See more keywords
Isatins 3-C annulation vs ring-opening: Two different pathways for synthesis of spiro compounds via multicomponent reactions
Sign Up to like & getrecommendations! Published in 2019 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2019.151181
Abstract: Abstract An efficient synthesis of spiro compounds via two different pathways from the reactions of isatins, 3-phenylisoxazol-5(4H)-one (3-ethylisoxazol-5(4H)-one), and pyrazol-5-amine (6-aminopyrimidine-2,4(1H,3H)-dione) were reported. The catalyst Amberlyst-15 could be easy recycled and reused for many time… read more here.
Keywords: different pathways; spiro; spiro compounds; compounds via ... See more keywords
Spiro Derivatives in the Discovery of New Pesticides: A Research Review.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of agricultural and food chemistry"
DOI: 10.1021/acs.jafc.2c02301
Abstract: Spiro compounds are biologically active organic compounds with unique structures, found in a wide variety of natural products and drugs. They do not readily lead to drug resistance due to their unique mechanisms of action… read more here.
Keywords: new pesticides; spiro compounds; derivatives discovery; discovery new ... See more keywords
Chartspiroton, a Tetracyclic Spiro-naphthoquinone Derivative from a Medicinal Plant Endophytic Streptomyces.
Sign Up to like & getrecommendations! Published in 2020 at "Organic letters"
DOI: 10.1021/acs.orglett.0c00696
Abstract: A novel 6/6/5/6 tetracyclic polyketide named chartspiroton (1) was isolated from a medicinal plant endophytic Streptomyces in Dendrobium officinale. The complete structure assignment with absolute stereochemistry was elucidated through spectroscopic data, computational calculations, and single-crystal… read more here.
Keywords: plant endophytic; endophytic streptomyces; spiro; naphthoquinone derivative ... See more keywords
Regioselective Synthesis of Spiro-Ganoderma Meroterpenoid Motifs via Lewis Acid-Catalyzed Divergent Cycloadditions: [3 + 2] and Water Accelerated [5 + 2] Annulations.
Sign Up to like & getrecommendations! Published in 2025 at "Organic letters"
DOI: 10.1021/acs.orglett.5c03622
Abstract: For the first time, a water-driven Lewis acid-catalyzed [5 + 2] cyclization between allylsilanes and aurones was developed, affording spiro-Ganoderma-meroterpenoid (SGM) motifs with high yields and stereoselectivity. This method enables efficient construction of spiro-tricyclic rings,… read more here.
Keywords: spiro ganoderma; spiro; ganoderma meroterpenoid; water ... See more keywords