
Structures of Thiosulfate, Dithionate & Tetrathionate Ions
Dithionate $\ce{[S2O6]^{-2}}$ There is one negative charge distributed by resonance over each group of 3 oxygens. Dithionite $\ce{[S2O4]^{-2}}$ There is one negative charge distributed by resonance over each group of 2 oxygens. Tetrathionate $\ce{[S4O6]^{-2}}$ There is one negative charge distributed by resonance over each group of 3 oxygens.
Sodium dithionite reduction of nitro group to amine
2022年2月17日 · I've recently come across the synthesis of 3-aminopthalhydrazine from 3-nitropthalhydrazine where the reducing agent used was sodium dithionite ($\ce{Na2S2O4}$).
organic chemistry - Can sodium dithionite reduce the nitro group …
2017年9月12日 · Just to add to Waylander's answer, sodium dithionate has been used successfully to reduce a wide variety of (more substituted) nitrobenzoic acids. Just as one example (there are many), this one used in Overman's synthesis of plectosphaeroic acids B and C (J. Org. Chem. 2013, 78 (17), 8766–8788):
inorganic chemistry - Analysis of cations using sodium …
2020年9月20日 · I do not think the question had sodium dithionite. This is a mistake. It must be sodium thiosulfate, because sodium dithionite is such a strong reducing agent that it will not solubilize these metals.
Method to remove impurities from acetaminophen synthesis …
2021年9月6日 · After the synthesis, your crude solid acetaminophen contains dark impurities, which have been formed from oxidation of the starting material, 4-aminophenol that carried along during the synthesis (if you have used 4-aminophenol as it is without purification).
Reaction between manganese (IV) oxide and sulfuric acid
2016年6月2日 · $$\\ce{2MnO2 + 2H2SO4 -> 2MnSO4 + O2 ^ + 2H2O}$$ How does this reaction occur? We get the oxygen moiety of the manganese dioxide suddenly oxidized to gaseous oxygen, while the manganese gets red...
organic chemistry - Partial reduction of anthraquinone to anthrone ...
2022年4月16日 · Luca: Your mechanism looks good except you haven't resolved the reductive elimination in the last step. Assuming that the carbonyl oxygen is protonated as in 1a, then two events must occur in some order: protonation of the hydroxyl oxygen and a 2-electron reduction of the protonated carbo
Organic reaction with Na2S2O4 - Chemistry Stack Exchange
2018年7月23日 · $\begingroup$ When we are going to add C6H5 N2+to the ring it gets add upto that postion otho to methyl grp bcoz 1 ) +M effect of NH2 is equally activating at both ortho and para postion but position ortho to nh2 would lead to decrease in activating affect of +I by CH3 grp so i thought the position ortho to Ch3 is decided in this way.... pls correct me if i am wrong …
When an iodide/iodate solution is acidified with H2SO4 instead of ...
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inorganic chemistry - Oxidation of sodium thiosulfate by iodine ...
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