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.

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 ($\ce{Na2S2O4}$).

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):

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.

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).

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...

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

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 …

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2019年1月5日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.