Awọn itumọ ọrọ: 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

Nọmba CAS: 95-73-8
Ilana molikula: C7H6Cl2
iwuwo molikula: 161.03
EINECS nọmba: 202-445-8

Awọn ẹka ti o jọmọ:ogbin ati awọn ọja boṣewa ayika; awọn fungicides triazole; awọn agbedemeji fungicide; awọn agbedemeji ipakokoropaeku; Organic aise ohun elo; awọn agbedemeji; Organic agbedemeji; Organics; Aryl; C7; Awọn Hydrocarbons Halogenated; Aromatics; Awọn ohun amorindun ile; Akopọ Kemikali Iwe Kemikali; Awọn hydrogenated Hydrocarbons; OrganicBuildingBlocks; Awọn ọja boṣewa itupalẹ; Awọn bulọọki ile Organic; Pesticidesintermediate; Hydrocarbons halogenated; Awọn ohun elo aise kemikali Organic.

2,4-Dichlorotoluene lilo ati kolaginni ọna
Awọn ohun-ini kemikali: omi ti ko ni awọ ati sihin.
Lo:
1) Ti a lo bi awọn agbedemeji ti awọn ipakokoropaeku, awọn awọ ati awọn oogun oogun, ti a lo ninu iṣelọpọ 2,4-dichlorobenzaldehyde, awọn oogun bii adipine, buprofen, ati bẹbẹ lọ.
2) 2,4-Dichlorotoluene jẹ agbedemeji ti awọn bactericides diniconazole ati benzylchlorotriazole, ati Chemicalbook tun jẹ ohun elo aise fun igbaradi ti 2,4-dichlorobenzaldehyde.
3) Organic sintetiki aise ohun elo, lo ninu awọn elegbogi ile ise fun isejade ti antimalarial oloro, Adepine, ati awọn kolaginni ti ventral acid. Ti a lo ninu awọn agbedemeji ipakokoropaeku lati ṣe iṣelọpọ 2,4-dichlorobenzyl chloride, 2,4-dichlorobenzoyl chloride, ati 2,4-dichlorobenzoic acid.

Awọn ọna sintetiki meji wa fun awọn ọna iṣelọpọ.
1. Ọna 1.2,4-dichlorotoluene nlo 2,4-diaminotoluene gẹgẹbi ohun elo aise, ati pe o gba nipasẹ diazotization ati chlorination. Fi hydrochloric acid ati omi sinu ikoko ifaseyin, ooru si 50 ℃, tu 2,4-diaminotoluene labẹ aruwo, lẹhinna fi hydrochloric acid ati chloride cuprous sinu ikoko, fi 1% iṣuu soda nitrite boṣeyẹ sinu Iwe-kemikali, iwọn otutu ti wa ni itọju ni nipa 60 ℃, duro si tun fun layering, awọn kekere robi ọja ti wa ni fo pẹlu omi titi ti o jẹ didoju, alkali ti wa ni afikun si alkali, ati ki o si fo pẹlu omi lati yọ awọn alkali, awọn robi 2,4-dichlorotoluene ti wa ni niya, ati awọn ti pari ọja ti wa ni nya distilled. . Ọna 2.3-chloro-4-toluidine ni a gba nipasẹ iṣesi diazotization pẹlu iṣuu soda nitrite, ati iṣesi Sandmeyer pẹlu kiloraidi Ejò.

2.Ọna iṣelọpọ ati awọn ọna igbaradi rẹ jẹ atẹle. Ni ọna parachlorotoluene, p-chlorotoluene ati ayase ZrCl4 ti wa ni fi sinu awọn riakito, ati awọn chlorine gaasi ti wa ni vented lati mu awọn chlorination lenu. Iwọn gaasi chlorine ti wa ni iṣakoso si opin ti iṣesi ati pe a da iṣesi duro. Idahun ti o gba ni 85.1% ti 2,4-dichlorotoluene. Ti a ba lo FeCl3 bi ayase lati ṣe iṣesi chlorination ni 10 ~ 15 ℃ titi iwuwo ibatan ti ojutu jẹ 1.025, ọja naa ni 2,4-dichlorotoluene ati 3,4-dichlorotoluene, ati ipin pupọ ti awọn meji. irinše ni 100:30. Lẹhin ti chlorination ti pari, wẹ pẹlu omi si didoju, ki o tọju pẹlu 10% ojutu NaOH ni 100～110℃ lati yọ awọn idoti miiran kuro. kiloraidi ti a ṣe itọju jẹ atunṣe ati pinya ni ile-iṣọ atunṣe ti o ga julọ (2,4-dichloro Toluene bp200°C, 3,4-dichlorotoluene bp207°C). Awọn ikore ti 2,4-dichlorotoluene ati 3,4-dichlorotoluene jẹ 64.4% ati 19.8%, lẹsẹsẹ. Ọna Ortho-chlorotoluene o-chlorotoluene nlo sulfuryl kiloraidi bi oluranlowo chlorinating lati ṣe iṣesi chlorination ni 142～196℃. Awọn ọja naa jẹ 2,4-dichlorotoluene ati 2,3-dichlorotoluene, ati aiṣedeede Awọn akopọ ti awọn ohun elo aise jẹ 55%, 6%, ati 39%, lẹsẹsẹ. Lẹhin ti distillation (2,4-dichlorotoluene bp 200°C, 2,3-dichlorotoluene bp 207-208°C, o-chlorotoluene bp 157-159°C), 2,4-dichlorotoluene ti yapa. Ọna Ortho-nitrotoluene Ortho-nitrotoluene jẹ chlorinated ni iwaju ayase FeCl3 ni 35～40℃. Nigbati iwuwo ibatan ti ifaseyin ba de 1.320 (15 ℃), wẹ ohun elo naa si didoju, ati pe reactant ni 15% ti ohun elo aise, 2-chloro-6-nitrotoluene 49%, 4-chloro-2-nitrotoluene 21% , ati 15% polychloride, lẹhin atunṣe ati itọju crystallization, Iwe-kemikali si 2-chloro-6-nitrotoluene Awọn eso ti 4-chloro-2-nitrotoluene ati 4-chloro-2-nitrotoluene jẹ 50% ati 30% lẹsẹsẹ. 4-chloro-2-nitrotoluene ti wa ni gba nipasẹ hydrogenation idinku lenu ati nya si distillation lati gba 4-chloro-2-amino. Toluene, diazotization ati fifi CH2Cl2 fun Sandmeyer lenu lati gba 2,4-dichlorotoluene. Ọna naa ni a lo lati gbejade 4-chloro-2-nitrotoluene eyiti o jẹ ọja-ọja ti 2-chloro-6-nitrotoluene (ti a lo bi agbedemeji ti quinclorac herbicide). 2,4-Diaminotoluene Ọna 2,4-Diaminotoluene ṣe ifasilẹ diazotization ni iwaju NaNO2 ati hydrochloric acid, ati lẹhinna ṣe iṣesi Sandmeyer ni iwaju Cu2Cl2 lati gba 2,4-dichlorotoluene. Ọna 3-Chloro-4-methylaniline 3-chloro-4-methylaniline ati hydrochloric acid ti wa ni afikun si kettle ifaseyin, ojutu olomi NaNO2 ti wa ni afikun ni isalẹ ni 3～5℃, ati pe afikun naa ti pari laarin 2～3h fun diazotization Idahun, omi diazotized ti wa ni afikun ni sisọ silẹ si ojutu hydrochloric acid ti o ni Cu2Cl2 ni 2-5 ° C lati ṣe iṣesi Sandmeyer lati gba 2,4-dichlorotoluene. Lara awọn ọna ti o wa loke, kiloraidi ti a ṣejade nipasẹ lilo p-chlorotoluene ati o-chlorotoluene bi awọn ohun elo aise ni ọpọlọpọ awọn idoti ati pe o ni awọn aaye sisun kanna. O jẹ dandan lati lo awọn ile-iṣọ ti n ṣatunṣe iṣẹ ṣiṣe ti o ga julọ lati jẹ ipin lati gba diẹ sii ju 98% ti 2,4-dichlorotoluene. Awọn ọna meji wọnyi nira lati ṣiṣẹ, ati idiyele idoko-owo ohun elo jẹ giga. Ọna 2,4-diaminotoluene ko dara fun iṣelọpọ, ati ọna o-nitrotoluene ati ọna 3-chloro-4-methylaniline lati mura 2,4-dichlorotoluene ni awọn ipilẹ ipilẹ kanna, ati pe awọn mejeeji nilo diazotization ati Sandmeyer Ni idahun. , nibẹ ni a shortcoming ti diẹ egbin omi. Ọna o-nitrotoluene ni a lo lati ṣe agbejade 2-chloro-6-nitrotoluene, eyiti o dinku siwaju sii lati gba 2-chloro-6-aminotoluene, eyiti o jẹ agbedemeji pataki fun iṣelọpọ ti quinclorac herbicide.