Talk:Phloroglucinol

Layout error

The image sequence is ovelapped by the info box. __meco 02:47, 15 July 2006 (UTC)

The second compound in the synthetic pathway is 1,3,5 trinitrobenzene. It is NOT a "nitrate," that would be an alcohol ester of nitric acid with the functional group -NO3; (example PETN). Perhaps this is a common trade name like nitrogylcerin; (which is a nitrate ester)? Also the rainey nickel/hydrogen reductant used in the nitro to the amine reaction is not an explosive. It is just a very (spontaneously) flammable mix. Paul S.

-- added melting point and mol weight. Boris W. I understand that this is a known, deadly carcinogen by old Eastman Kodak. Are scientitsts getting evil by the moment, or do they need to revisit what they are doing? For humanity? I'm a European Anthropologist. Try out Professor Noam Chomsky, if you really want a sober, subside

LV@torgaugin.@sshypocrite

Pictures needed for 1,3,5-cyclohexanetrione

The infobox should display also pictures of the tautomer 1,3,5-cyclohexanetrione. --Jorge Stolfi (talk) 06:30, 30 June 2009 (UTC)

Position of equilibrium

Can we assign %s to the two forms? Can they be isolated at low enough temperature? --Jorge Stolfi (talk) 06:29, 30 June 2009 (UTC)

various problems

Chemistry - the "Many such monophenolics..." sentence does not make sense here (and I suggest deleting "still" in the previous sentence or just deleting this whole paragraph). Typo - figure - UV visible spEctrum. "...but it does sublime" - if it melts it does not sublime. (It might sublime at reduced pressure). Synthesis - there should be a dash between 1,3,5 & trinitrobenzene. Biosynthesis - 3,5-diketoheptanoate product. Phloroglucinol cannot be dehydroxylated to get hydroxyquinol (that would be an isomerization if it occurred). Potential health effects - Phloroglucinols acylated - either delete the s or add '. Applications - change in to by after minimized. Ref. 8 is missing a space. In Chemistry I suggest changing "found along with two isomers," to "one of three isomers along with". 69.72.92.27 (talk) 22:13, 29 November 2015 (UTC)

GHS Labelling Source

Where does the GHS pictogram and H/P statements come from? Does not seem to be correct. 2A02:3100:75E2:FC00:C576:8AFF:B1:24E7 (talk) 17:46, 21 May 2024 (UTC)

Citations

21 & 23 I think are broken links - they don't link to a .PDF or are broken links. I don't know about others. W;ChangingUsername (talk) 12:05, 3 July 2024 (UTC)

Sources provide another routes of preparing phloroglucinol.

• Chinese 在催化剂存在下，使苯与丙烯反应，所得混合物经精馏得三异丙基苯。然后在三异丙基苯中通入压缩空气，于60 ～120℃下采用偶氮  双自由基引发剂为催化剂进行自氧化反应，控制溶液ph＝8～9。反应产生的醇类副产物用2～6倍的双氧水在酸性条件下氧化，转化为所需产物1,3,5- 三异丙苯三氢过氧化物。过氧化物在高活性酸性催化剂作用下分解为目的产物间苯三酚，反应过程中要及时排除反应热。过程主要反应式为(...)。所得酸性间苯三酚用40%氢氧化钠中和后，经萃取分离、吸附和重结晶，可得高纯度间苯三酚。

• French On peut également le préparer à partir du 2,6 dichlorophénol sur lequel on fait réagir de la potasse, formant ainsi le sel de phloroglucinol, qu'on acidifie par la suite. C'est alors une réaction de cinésubstitution.

• German 1,3,5-Trihydroxybenzol kann durch die Spaltung vieler höher zusammengesetzter Pflanzenstoffe, wie Drachenblut, Gummigutt, Quercetin, Morin oder Maklurin erhalten werden. Eine erste technische Synthese geht vom Trinitrotoluol aus, welches zunächst mittels Natriumdichromat zur entsprechenden Benzoesäure oxidiert wird. Im Folgeschritt wird nach einer Decarboxylierung und Reduktion mittels Eisen im sauren Medium das 1,3,5-Triaminobenzol erhalten. Eine nucleophile Substitution im wässrig saurem Medium ergibt dann die Zielverbindung. Ein neueres Verfahren geht vom 1,3,5-Triisopropylbenzol aus, das analog zum Cumolhydroperoxid-Verfahren zunächst mittels Sauerstoff in das entsprechende Trihydroperoxid überführt wird. Dessen saure Spaltung ergibt dann 1,3,5-Trihydroxybenzol und Aceton. Weitere Synthesevarianten sind Umsetzung des 1,3,5-Triacetylbenzoltrioxims in einer Beckmann-Umlagerung und anschließender Hydrolyse, einer Hofmann-Umlagerung von Benzol-1,3,5-tricarbonsäuretriamid, sowie der nucleophilen Substitution mittels Alkoxiden am 1,3,5-Tribrombenzol und anschließender sauren Etherspaltung. Auch durch das Schmelzen von Resorcin mit Natriumhydroxid kann 1,3,5-Trihydroxybenzol erhalten werden.

Ktsquare (talk) 15:33, 15 September 2024 (UTC)

a description from Italian wikipedia's article about the chemical's tautomers

La molecola esiste in due forme tautomere: 1,3,5-triidrossibenzene e 1,3,5-cicloesantrione. I due tautomeri sono in equilibrio secondo la reazione: Ktsquare (talk) 15:35, 15 September 2024 (UTC)