Mawu ofanana: 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-benzene

Nambala ya CAS: 95-73-8
Fomula ya maselo: C7H6Cl2
Kulemera kwa maselo: 161.03
Nambala ya EINECS: 202-445-8

Magulu ofanana:zinthu zokhazikika zaulimi ndi zachilengedwe; mankhwala ophera tizilombo a triazole; mankhwala ophera tizilombo; mankhwala ophera tizilombo; zinthu zopangira zachilengedwe; zinthu zokhazikika; zinthu zopangira zachilengedwe; Zachilengedwe; Aryl; C7; Ma Hydrocarbons a Halogenated; Mafuta Onunkhira; Ma Blocks; Kupanga Mankhwala a Chemicalbook; Ma Hydrocarbons a Hydrogenated; Ma Blocks a Zomangamanga a Organic; Zinthu zokhazikika za Analytical; Ma Blocks a Zomangamanga a Organic; Mankhwala ophera tizilombo pakati; Ma hydrocarbons a Halogenated; Zinthu zopangira mankhwala a Organic.

Njira yogwiritsira ntchito ndi kupanga 2,4-Dichlorotoluene
Mankhwala: madzi opanda mtundu komanso owonekera.
Gwiritsani ntchito:
1) Amagwiritsidwa ntchito ngati mankhwala ophera tizilombo, utoto ndi mankhwala, amagwiritsidwa ntchito popanga 2,4-dichlorobenzaldehyde, mankhwala monga adipine, buprofen, ndi zina zotero.
2) 2,4-Dichlorotoluene ndi mankhwala apakati a bactericides monga diniconazole ndi benzylchlorotriazole, ndipo Chemicalbook ndi chinthu chopangira 2,4-dichlorobenzaldehyde.
3) Zipangizo zopangira zachilengedwe, zomwe zimagwiritsidwa ntchito mumakampani opanga mankhwala popanga mankhwala oletsa malungo, Adepine, ndi kupanga asidi wa m'mimba. Zimagwiritsidwa ntchito m'mafakitale ophera tizilombo popanga 2,4-dichlorobenzyl chloride, 2,4-dichlorobenzoyl chloride, ndi 2,4-dichlorobenzoic acid.

Pali njira ziwiri zopangira zinthu zopangidwa.
1. Njira ya 1.2,4-dichlorotoluene imagwiritsa ntchito 2,4-diaminotoluene ngati zopangira, ndipo imapezeka mwa diazotization ndi chlorination. Ikani hydrochloric acid ndi madzi mu mphika wa reaction, kutentha kufika pa 50℃, sungunulani 2,4-diaminotoluene pansi pa kusakaniza, kenako ikani hydrochloric acid ndi cuprous chloride mu mphika, onjezerani 1% sodium nitrite solution mofanana mu Chemicalbook. Kutentha kumasungidwa pafupifupi 60℃, kuyimirira kuti iikidwe, chinthu chotsika chosakanizidwa chimatsukidwa ndi madzi mpaka chitakhala chopanda mbali, alkali imawonjezeredwa ku alkali, kenako imatsukidwa ndi madzi kuti ichotse alkali, 2,4-dichlorotoluene yosakanizidwa imalekanitsidwa, ndipo chinthu chomalizidwa chimasungunuka ndi nthunzi. . Njira ya 2.3-chloro-4-toluidine imapezeka mwa diazotization reaction ndi sodium nitrite, ndi Sandmeyer reaction ndi copper chloride.

2.Njira yopangira ndi njira zake zokonzekera ndi izi. Mu njira ya parachlorotoluene, p-chlorotoluene ndi catalyst ZrCl4 zimayikidwa mu reactor, ndipo mpweya wa chlorine umatuluka kuti uchite chlorination reaction. Kuchuluka kwa mpweya wa chlorine kumayendetsedwa mpaka kumapeto kwa reaction ndipo reaction imayimitsidwa. Reactant yomwe yapezeka ili ndi 85.1% ya 2,4-dichlorotoluene. Ngati FeCl3 igwiritsidwa ntchito ngati catalyst kuti ichite chlorination reaction pa 10 ～15℃ mpaka kuchuluka kwa yankho kuli 1.025, mankhwalawa ali ndi 2,4-dichlorotoluene ndi 3,4-dichlorotoluene, ndipo chiŵerengero cha zigawo ziwirizi ndi 100:30. Chlorination ikatha, sambitsani ndi madzi mpaka kusagwirizana, ndikuchiza ndi 10% NaOH solution pa 100 ～110℃ kuti muchotse zonyansa zina. Kloridi wothiridwayo amakonzedwa ndikulekanitsidwa mu nsanja yowongolera bwino kwambiri (2,4-dichloro Toluene bp200°C, 3,4-dichlorotoluene bp207°C). Zokolola za 2,4-dichlorotoluene ndi 3,4-dichlorotoluene zinali 64.4% ndi 19.8%, motsatana. Njira ya Ortho-chlorotoluene o-chlorotoluene imagwiritsa ntchito sulfuryl chloride ngati chothandizira chlorination kuti ichite chlorination reaction pa 142 ~ 196℃. Zogulitsazo ndi 2,4-dichlorotoluene ndi 2,3-dichlorotoluene, ndipo sizinachitepo kanthu. Kapangidwe ka zinthu zopangira ndi 55%, 6%, ndi 39%, motsatana. Pambuyo pa distillation (2,4-dichlorotoluene bp 200°C, 2,3-dichlorotoluene bp 207-208°C, o-chlorotoluene bp 157-159°C), 2,4-dichlorotoluene inalekanitsidwa. Njira ya Ortho-nitrotoluene Ortho-nitrotoluene imathiridwa chlorine pamaso pa FeCl3 catalyst pa 35～40℃. Pamene kuchuluka kwa reactant kufika pa 1.320 (15℃), sambitsani zinthuzo kuti zikhale zosalowerera, ndipo reactant ili ndi 15% ya zinthu zopangira, 2-chloro-6-nitrotoluene 49%, 4-chloro-2-nitrotoluene 21%, ndi 15% polychloride, mutatha kukonza ndi kukonza makristalo, Chemicalbook to 2-chloro-6-nitrotoluene Zokolola za 4-chloro-2-nitrotoluene ndi 4-chloro-2-nitrotoluene ndi 50% ndi 30% motsatana. 4-chloro-2-nitrotoluene imapezeka mwa hydrogenation reduction reaction ndi nthunzi distillation kuti ipeze 4-chloro-2-amino. Toluene, diazotization ndi kuwonjezera CH2Cl2 kuti Sandmeyer reaction ipeze 2,4-dichlorotoluene. Njirayi imagwiritsidwa ntchito popanga 4-chloro-2-nitrotoluene yomwe ndi yochokera ku 2-chloro-6-nitrotoluene (yomwe imagwiritsidwa ntchito ngati pakati pa quinclorac ya herbicide). Njira ya 2,4-Diaminotoluene 2,4-Diaminotoluene imadutsa mu diazotization reaction pamaso pa NaNO2 ndi hydrochloric acid, kenako imachita Sandmeyer reaction pamaso pa Cu2Cl2 kuti ipeze 2,4-dichlorotoluene. Njira ya 3-Chloro-4-methylaniline 3-chloro-4-methylaniline ndi hydrochloric acid zimawonjezedwa mu ketulo ya reaction, NaNO2 aqueous solution imawonjezedwa mu 3～5℃, ndipo kuwonjezerako kumamalizidwa mkati mwa maola 2～3 kuti diazotization Pambuyo pa reaction, madzi opangidwa ndi diazotized amawonjezedwa mu dropwise ku hydrochloric acid solution yokhala ndi Cu2Cl2 pa 2-5°C kuti Sandmeyer reaction ipeze 2,4-dichlorotoluene. Pakati pa njira zomwe zili pamwambapa, kloridi yopangidwa pogwiritsa ntchito p-chlorotoluene ndi o-chlorotoluene ngati zopangira imakhala ndi zinthu zambiri zosafunika ndipo ili ndi malo ofanana owira. Ndikofunikira kugwiritsa ntchito nsanja zowongolera bwino kwambiri kuti zigawike kuti zipeze zoposa 98% ya 2,4-dichlorotoluene. Njira ziwirizi ndi zovuta kugwiritsa ntchito, ndipo ndalama zomwe zimagwiritsidwa ntchito pazida ndizokwera. Njira ya 2,4-diaminotoluene siyoyenera kupanga mafakitale, ndipo njira ya o-nitrotoluene ndi njira ya 3-chloro-4-methylaniline yokonzekera 2,4-dichlorotoluene zili ndi mfundo zofanana, ndipo zonse zimafuna diazotization ndi Sandmeyer. Poyankha, pali kusowa kwa madzi ambiri otayika. Njira ya o-nitrotoluene imagwiritsidwa ntchito popanga 2-chloro-6-nitrotoluene, yomwe imachepetsedwa kwambiri kuti ipeze 2-chloro-6-aminotoluene, yomwe ndi yofunika kwambiri popanga quinclorac ya herbicide.