Spiro Compound Formation. III. The Formation of Spiro Compounds by the Rearrangement of Bicyclo[5.4.0]-undecene(1,7) and Cyclopentylcyclohexene [PDF]
Bulletin of the Chemical Society of Japan, 1969 Abstract The isomerizations of bicyclo[5.4.0]undecene-(1,7) (IV), spiro[5.5]undecene-1 (V), and 1-cyclopentylcyclohexene (VI) were examined with equivalent amounts of perchloric acid in acetic acid or in ethanol at 75°C. In acetic acid, IV, V, and VI all rearranged to form spiro[5.5]-undecan-1-yl acetate (VII) and spiro[5.5]undecan-2-yl ...
Niichiro Tokura, Masatomo Nojima
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Synthesis and evaluation of novel spiro derivatives for pyrrolopyrimidines as anti-hyperglycemia promising compounds [PDF]
Journal of Enzyme Inhibition and Medicinal Chemistry, 2018 Pyrrolopyrimidin-4-ylidene-malononitriles IIa–d were prepared as important intermediates for preparation of a new series of spiro-pyrrolopyrimidines.
Samar S. Fatahala +3 more
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Advanced Photonics Research, 2022 Spiro compounds are widely used as host matrices in organic light‐emitting diodes (OLEDs). Here, inspired by the recent developments in thermally activated delayed fluorescence (TADF) materials, the potential as a light emitter of two spiro‐configured ...
Pauline Tourneur +8 more
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Chemischer Informationsdienst, 1976 AbstractBei der Behandlung mit Hydrazin erhält man aus den 3‐Phenacyliden‐indolin‐2‐onen (I) die Spirocyclen (III), die zu (IV) acetyliert werden.
Tae Tanaka +2 more
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Synthesis and Regioselective Reaction of Some Unsymmetrical Heterocyclic Chalcone Derivatives and Spiro Heterocyclic Compounds as Antibacterial Agents [PDF]
Molecules, 2015 A number of novel heterocyclic chalcone derivatives can be synthesized by thermal and microwave tools. Treatment of 4-(4-Acetylamino- and/or 4-bromo-phenyl)-4-oxobut-2-enoic acids with hydrogen peroxide in alkaline medium were afforded oxirane ...
Maher A. El‐Hashash +2 more
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Synthesis and Crystal Structures of Two Novel O, N-Containing Spiro Compounds
Crystals, 2016 Two novel O, N-containing spiro compounds, C16H16ClNO4 (1) and C16H16N2O6 (2), were prepared by reactions of monosubstituted benzenamine (substituent = –NO2, –Cl) and 1,5-dioxaspiro[5.5]undecane-2,4-dione in ethanol solution of trimethoxymethane.
Wulan Zeng, Jinhe Jiang
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Glucopyranosylidene-Spiro-Thiazolinones: Synthetic Studies and Determination of Absolute Configuration by TDDFT-ECD Calculations [PDF]
Molecules, 2017 Reactions of O-peracylated C-(1-bromo-β-d-glucopyranosyl)formamides with thioamides furnished the corresponding glucopyranosylidene-spiro-thiazolin-4-one.
Katalin E. Szabó +4 more
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Spiro-compounds. Part II. Ring Transformation in Spiro-compound from 4-Methylcyclohexanone. A New Synthesis of Cadalene. [PDF]
, 1936 Spiro-compounds. Part II. Ring Transformation in Spiro-compound from 4-Methylcyclohexanone. A New Synthesis of Cadalene.
NRIPENDRA NATH CHATTERJEE
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Chemistry Teacher Trainees’ use of Molecular Models in Learning Spiro and Bicyclic Compounds
Science Education International, 2022 The study diagnosed chemistry teacher trainees’ difficulties in naming and writing structures of spiro and bicyclic compounds. The case study design was conducted in a constructivist environment to enhance chemistry teacher trainees’ ability to construct,
Claudia Quayson +3 more
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Broadband wavelength-selective isotype heterojunction n+-ZnO/n-Si photodetector with variable polarity [PDF]
Journal of Alloys and Compounds 903 (2022) 163836, 2022 An isotype heterojunction n+-ZnO/n-Si photodetector is developed, demonstrating wavelength-selective or broadband operation, depending on the applied bias voltage. Additionally, at self-powered (zero bias) operation, it distinguishes between UV, visible, and near IR (NIR) photons by polarity control of the photocurrent.
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