- A simple and efficient heterogeneous procedure for thioacetalization of aldehydes and ketones
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A new procedure for the protection of aldehydes and ketones as thioacetals promoted by catalytic amount of p-toluene-sulfonic acid and silica gel has been developed. This procedure offers versatility, short reaction time, excellent yield, good selectivity
- Ali, Mohammed Hashmat,Gomes, Maria Goretti
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p. 1326 - 1332
(2007/10/03)
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- A rapid mild and efficient method of thioacetalization using anhydrous iron(III) chloride dispersed on silica gel
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Carbonyl compounds are rapidly thioacetalized in near quantitative yields by using anhydrous iron(III) chloride dispersed on silica gel at room temperature.
- Patney
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p. 2259 - 2260
(2007/10/02)
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- Sulfonated charcoal, a mild and efficient reagent for the preparation of cyclic acetals, dithioacetals and benzodioxepines
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1,3-Dioxolanes, 1,3-Ditholanes and 1,5-dihydro-3H-2,4-benzodioxepines were prepared by the direct condensation of carbonyl compounds with 1,2-ethanediol, 1,2-ethanedithiol or 1,2-benzenedimethanol under the heterogeneous conditions of sulfonated charcoal catalyst.
- Patney, Haris K.
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p. 413 - 416
(2007/10/02)
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- Comparative radioprotective activity of various pentagonal compounds with two heteroatomes
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Various heterocyclic compounds with two heteroatomes were synthesized and their potential radioprotective activity was tested. This study shows the interest of phenylthiazolidines derivatives in chemical radioprotection.
- Robbe,Fernandez,Dubief,et al.
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p. 235 - 243
(2007/10/02)
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