Results 111 to 120 of about 669 (167)
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Orally active amino functionalized antimalarial 1,2,4-trioxanes
Bioorganic & Medicinal Chemistry Letters, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
Chandan, Singh +2 more
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A Vibrational Study of Some 1,2,4‐Trioxanes
Helvetica Chimica Acta, 1988AbstractThe vibrational spectra of some 1,2,4‐trioxanes present two characteristic bands at 790 and 880 cm−1. On the basis of 18O‐isotopic substitution and comparison with analogous compounds, these bands have been assigned to coupled CO and OO stretching modes of the COO element.
Mohnhaupt, Martin Klaus +6 more
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The Synthesis of 1,2,4‐Trioxan‐5‐ones
Helvetica Chimica Acta, 1991AbstractSeveral 3,6‐substituted 1,2,4‐trioxan‐5‐ones have been prepared in good yield by condensing aldehydes and ketones with trimethylsilyl α‐[(trimethylsilyl)peroxy]alkanoates in the presence of trimethylsilyl trifluoromethane sulfonate as catalyst.
Jefford, Charles +3 more
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Further explorations on bridged 1,2,4-trioxanes
Tetrahedron, 2007Abstract Three new bicyclo[3.2.1]-type 1,2,4-trioxanes have been designed and synthesized. One of them demonstrates better tolerance of the intramolecular hemiketals to steric crowding in hydroperoxidation. The other represents a prototype for possible manipulation of the transient radicals generated in cleavage reactions.
Qi Zhang, Yikang Wu
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A holegenocyclisation route to 1,2,4-trioxanes
Tetrahedron Letters, 1993Hemiperoxyacetals derived from 2,3-dimethylbut-1-en-3-yl hydroperoxide and aliphatic aldehydes undergo cyclisation with NIS or NBS to afford the corresponding 3-alkyl-5-halogenomethyl-5,6,6-trimethyl-5,6,6-trimethyl-1,2,4-trioxanes in yields of 20–65%
A.J. Bloodworth, Aneela Shah
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Synthesis and reaction of 1,2,4-trioxanes
Journal of the Chemical Society, Perkin Transactions 1, 1989The peroxides (1a–e) and epoxides (2a–g) in methylene dichloride were treated with tungsten(VI) oxide and then with catalytic amounts of chlorosulphonic acid to give the corresponding 1,2,4-trioxanes (3a–r) in 10–63% yield. The mode of decomposition of the 1,2,4-trioxanes was studied by treating a number with the following reagents: triethylamine ...
Tomohiro Fujisaka +3 more
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ChemInform Abstract: SYNTHESIS OF 1,2,4‐TRIOXANES
Chemischer Informationsdienst, 1981AbstractDas Peroxid (I) bildet in Gegenwart des Epoxids (II) das Trioxan (III).
M. MIURA, M. NOJIMA, S. KUSABAYASHI
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Potent Antimalarial 1,2,4‐Trioxanes through Perhydrolysis of Epoxides
Chemistry – A European Journal, 2013AbstractPerhydrolysis of a sterically congested multifunctional epoxide was achieved in ethereal H2O2 with the aid of a recently developed Mo catalyst. The resulting hydroperoxide cyclized to give a 1,2,4‐trioxane, which could be readily elaborated into qinghaosu and a range of novel analogues.
Hao, Hong-Dong +2 more
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1,2,4-Trioxanes as Masked, Dual Purpose, Functional Groups
HETEROCYCLES, 1989Scission reductrice de trioxannes-1,2,4 condenses en glycols et cetones ou aldehydes par Zn/acide ...
Jefford, Charles +2 more
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ChemInform Abstract: cis‐Fused Dihydrofurano‐1,2,4‐trioxanes.
ChemInform, 1997AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
C. W. JEFFORD +4 more
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