Izithethantonye:Benzene,2,4-dichloro-1-methyl-;Toluene, 2,4-dichloro-;2,4-dichloro-1-methylbenzene;2,4-DCT;2,4-DICHLOROTOLUENE;2,4- DICHLOROMETHYLBENZENE;1,3-DICHLORO-4-METHYLBENZENE;2,4-dichloro-1-methyl-benzen

Inombolo yeCAS: 95-73-8
Ifomula yemolekyuli: C7H6Cl2
Ubunzima bemolekyuli: 161.03
Inombolo ye-EINECS: 202-445-8

Iindidi ezinxulumeneyo:iimveliso ezikumgangatho wezolimo nezendalo; i-triazole fungicides; imichiza yokungunda ephakathi; izibulali zinambuzane; izinto eziphilayo ekrwada; abaphakathi izinto eziphilayo; Izinto eziphilayo; UAryl; C7; IiHalogenated Hydrocarbons; Ivumba elimnandi; Iibhloko zokwakha; I-Chemicalbook Synthesis; IiHydrocarbons ezifumaneka ngeHydrojeni; Iibhloko zoKwakha i-Organic;Iimveliso ezisemgangathweni;Iibhloko zokwakha ze-Organic;Izitshabalalisi eziphakathi;I-halogenated hydrocarbons;Imathiriyeli ye-Organic yekhemikhali ekrwada.

I-2,4-Dichlorotoluene yokusetyenziswa kunye nendlela yokudibanisa
Iimpawu zeMichiza: ulwelo olungenambala kunye nolubonakalayo.
Sebenzisa:
I-1) Isetyenziswe njenge-intermediates ye-pesticides, idayi kunye neyeza zonyango, ezisetyenziselwa ukuveliswa kwe-2,4-dichlorobenzaldehyde, iziyobisi ezifana ne-adipine, i-buprofen, njl.
I-2) i-2,4-i-Dichlorotoluene yindawo ephakathi ye-bactericides i-diniconazole kunye ne-benzylchlorotriazole, kunye ne-Chemicalbook nayo i-raw material yokulungiswa kwe-2,4-dichlorobenzaldehyde.
3) Izinto zokwenziwa kwezinto eziphilayo, ezisetyenziswa kwishishini lamachiza ukuvelisa amachiza okulwa nemalariya, i-Adepine, kunye ne-synthesis ye-ventral acid. Isetyenziswe kwi-pesticide intermediates ukuvelisa i-2,4-dichlorobenzyl chloride, i-2,4-dichlorobenzoyl chloride, kunye ne-2,4-dichlorobenzoic acid.

Zimbini iindlela zokwenziwa kweendlela zokuvelisa.
1. Indlela ye-1.2,4-dichloroluene isebenzisa i-2,4-diaminotoluene njengento eluhlaza, kwaye ifunyenwe nge-diazotization kunye ne-chlorination. Faka i-hydrochloric acid kunye namanzi kwi-reaction pot, ubushushu ukuya kwi-50 ℃, nyibilikisa i-2,4-diaminotoluene phantsi kokuvuselela, emva koko ubeke i-hydrochloric acid kunye ne-cuprous chloride embizeni, yongeza isisombululo se-1% ye-sodium nitrite ngokulinganayo kwi-Chemicalbook, Ubushushu bugcinwa malunga ne-60 ℃, yima ukuze ubekwe, imveliso ephantsi ihlanjwe ngamanzi ide ingathathi hlangothi, i-alkali yongezwa kwi-alkali, emva koko ihlanjwe ngamanzi ukususa i-alkali, i-2,4-dichloroluene ekrwada yohlulwe, kwaye imveliso egqityiweyo yi-steam distilled. . Indlela ye-2.3-chloro-4-toluidine ifunyenwe nge-diazotization reaction kunye ne-nitrite ye-sodium, kunye ne-Sandmeyer yokusabela nge-chloride yobhedu.

2.Indlela yokuvelisa kunye neendlela zayo zokulungiselela zimi ngolu hlobo lulandelayo. Kwindlela ye-parachlorotoluene, i-p-chlorotoluene kunye ne-catalyst ZrCl4 ifakwe kwi-reactor, kwaye igesi ye-chlorine ifakwe umoya ukuze iqhube ukusabela kwe-chlorination. Ubungakanani begesi yeklorini ilawulwa ukuya ekupheleni kokusabela kwaye ukusabela kumisiwe. I-reactant efunyenweyo iqukethe i-85.1% ye-2,4-dichloroluene. Ukuba i-FeCl3 isetyenziswa njenge-catalyst ukwenza i-chlorination reaction kwi-10～15℃ de ubuninzi besisombululo bube yi-1.025, imveliso iqulethe i-2,4-dichloroluene kunye ne-3,4-dichloroluene, kunye nomlinganiselo wobunzima bezo zimbini. amacandelo yi-100:30 . Emva kokuba i-chlorination igqityiwe, hlamba ngamanzi ukungathathi hlangothi, kwaye uphathe nge-10% isisombululo se-NaOH kwi-100～110℃ ukususa okunye ukungcola. I-chloride ephathwayo iyalungiswa kwaye ihlukaniswe kwinqaba yokulungiswa okuphezulu (2,4-dichloro Toluene bp200 ° C, 3,4-dichloroluene bp207 ° C). Izivuno ze-2,4-dichloroluene kunye ne-3,4-dichloroluene ziyi-64.4% kunye ne-19.8%, ngokulandelanayo. Indlela ye-Ortho-chlorotoluene i-o-chlorotoluene isebenzisa i-sulfuryl chloride njenge-agent ye-chlorinating ukuphumeza ukusabela kwe-chlorination kwi-142～196℃. Iimveliso ziyi-2,4-dichloroluene kunye ne-2,3-dichloroluene, kwaye ayiphendulwanga Ukubunjwa kwezinto eziluhlaza yi-55%, 6%, kunye ne-39%, ngokulandelanayo. Emva kwe-distillation (2,4-dichloroluene bp 200 ° C, 2,3-dichloroluene bp 207-208 ° C, i-o-chlorotoluene bp 157-159 ° C), i-2,4-dichloroluene yahlukana. Indlela ye-Ortho-nitrotoluene I-Ortho-nitrotoluene ikloriniwe kubukho be-FeCl3 catalyst ku-35～40℃. Xa ubuninzi be-reactant bufikelela kwi-1.320 (15 ℃), hlamba izinto ngokungathathi hlangothi, kwaye i-reactant iqulethe i-15% yezinto eziluhlaza, 2-chloro-6-nitrotoluene 49%, 4-chloro-2-nitrotoluene 21% , kunye ne-15% ye-polychloride, emva kokulungiswa kunye nonyango lwe-crystallization, i-Chemicalbook ukuya kwi-2-chloro-6-nitrotoluene Izivuno ze-4-chloro-2-nitrotoluene kunye ne-4-chloro-2-nitrotoluene ziyi-50% kunye ne-30% ngokulandelanayo. I-4-chloro-2-nitrotoluene ifunyenwe ngokusabela kokunciphisa i-hydrogenation kunye ne-steam distillation ukufumana i-4-chloro-2-amino. I-Toluene, i-diazotization kunye nokongeza i-CH2Cl2 yokusabela kwe-Sandmeyer ukufumana i-2,4-dichlorrotoluene. Indlela isetyenziselwa ukuvelisa i-4-chloro-2-nitrotoluene eyimveliso ye-2-chloro-6-nitrotoluene (esetyenziswa njenge-intermediate ye-quinclorac ye-herbicide). I-2,4-Diaminotoluene Indlela ye-2,4-Diaminotoluene ithatha i-diazotization reaction phambi kwe-NaNO2 kunye ne-hydrochloric acid, kwaye emva koko yenza ukusabela kwe-Sandmeyer phambi kwe-Cu2Cl2 ukufumana i-2,4-dichloroluene. I-3-Chloro-4-methylaniline indlela ye-3-chloro-4-methylaniline kunye ne-hydrochloric acid yongezwa kwi-kettle yokusabela, isisombululo se-NaNO2 esimanzi songezwa kwi-3～5℃, kwaye ukongezwa kugqitywe ngaphakathi kwe-2 ~ 3h ye-diazotization Emva impendulo, ulwelo diazotized yongezwa dropwise kwisisombululo hydrochloric acid equlathe Cu2Cl2 kwi 2-5 °C ukwenza reaction Sandmeyer ukufumana 2,4-dichloroluene. Phakathi kwezi ndlela zingentla, i-chloride eveliswa ngokusebenzisa i-p-chlorotoluene kunye ne-o-chlorotoluene njengezinto eziluhlaza ziqulethe izinto ezininzi ezingcolileyo kwaye zineendawo zokubilisa ezifanayo. Kuyimfuneko ukusebenzisa i-high-efficiency ukulungisa iinqaba ukuya kwi-fractionate ukufumana ngaphezu kwe-98% ye-2,4-dichloroluene. Ezi ndlela zimbini kunzima ukusebenza, kwaye iindleko zotyalo-mali zezixhobo ziphezulu. Indlela ye-2,4-diaminotoluene ayifanelekanga kwi-industrialization, kwaye indlela ye-o-nitrotoluene kunye ne-3-chloro-4-methylaniline indlela yokulungisa i-2,4-dichloroluene inemigaqo esisiseko efanayo, kwaye zombini ifuna i-diazotization kunye ne-Sandmeyer Ekuphenduleni. , kukho ukusilela kwamanzi amdaka amaninzi. Indlela ye-o-nitrotoluene isetyenziselwa ukuvelisa i-2-chloro-6-nitrotoluene, eyancipha ngakumbi ukufumana i-2-chloro-6-aminotoluene, eyona nto ibalulekileyo ephakathi kwimveliso ye-quinclorac ye-herbicide.