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问题:2,4-二氯苯酚合成
类型:求助 (悬赏分:3分)
提问:hzl2612
等级:
版块:农药交流(sunyubo,)
信誉:50%
回复:12
阅读:3338
时间:2006-03-01 21:30:23  编辑    加入/取消收藏    订制/取消短消息    举报该贴    

有谁能提供2,4-二氯苯酚合成的有关资料?
回复人:Ftian,★★ (资料请发到我的邮箱里,这里封纳米盘。) 时间:2006-03-01 21:42:00   编辑 1楼
1 Journal of Chemical Education, 24, 449; 1947 (产率81%)
2 Angewandte Chemie, 88(10), 641-2; 1976 (产率47%)
3 Journal of Organic Chemistry, 47(27), 5270-6; 1982 (产率93%)




回复人:ecustlian,▲▲▲ (相互学习,共同提高) 时间:2006-03-01 23:26:07   编辑 2楼
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Beilstein Data: Copyright (c) 1988-2005, Beilstein Institut zur Foerderung der Chemischen Wissenschaften licensed to Beilstein GmbH and MDL Information Systems GmbH. All rights reserved.
Reaction (Beilstein(2005/03):Reactions:Q02 hit 15, RX.ID 851474)
Reaction ID 851474
Reactant BRN 969616 phenol

1746652 N,N-dichloro-urea
Product BRN 742467 2,4-dichloro-phenol
No. of Reaction Details 1
Find similar reactions click here

Field Availability List (Beilstein(2005/03):Reactions:Q02 hit 15, RX.ID 851474)
Code Field Name Occ.
RX Reaction Details 1

Reaction Details (Beilstein(2005/03):Reactions:Q02 hit 15, RX.ID 851474)
Reaction Classification Preparation
Reagent diluted hydrochloric acid
Note 1 Handbook
Ref. 1 1537619; Journal; Lichoscherstow; ZRKOAC; Zh. Russ. Fiz.-Khim. O-va; 61; 1929; 1027; CHZEA6; Chem. Zentralbl.; GE; 101; I; 1930; 1294.

RX.ID=851474:


--------------------------------------------------------------------------------
Beilstein Data: Copyright (c) 1988-2005, Beilstein Institut zur Foerderung der Chemischen Wissenschaften licensed to Beilstein GmbH and MDL Information Systems GmbH. All rights reserved.
Reaction (Beilstein(2005/03):Reactions:Q02 hit 16, RX.ID 852616)
Reaction ID 852616
Reactant BRN 969616 phenol
Product BRN 742467 2,4-dichloro-phenol
No. of Reaction Details 2
Find similar reactions click here

Field Availability List (Beilstein(2005/03):Reactions:Q02 hit 16, RX.ID 852616)
Code Field Name Occ.
RX Reaction Details 2

Reaction Details 1 of 2 (Beilstein(2005/03):Reactions:Q02 hit 16, RX.ID 852616)
Reaction Classification Preparation
Temperature 80 - 90 C
Other Conditions Einleiten von Chlor
Note 1 Handbook
Ref. 1 1555930; Patent; Imp. Chem. Ind.; US 2440602; 1946.
Ref. 2 1555933; Journal; Walker; Hayes; JSCIAN; J. Soc. Chem. Ind. London; 66; 1947; 215.

Reaction Details 2 of 2 (Beilstein(2005/03):Reactions:Q02 hit 16, RX.ID 852616)
Reaction Classification Preparation
Other Conditions bei der Chlorierung
Note 1 Handbook
Ref. 1 1529246; Journal; Holleman; RTCPA3; Recl. Trav. Chim. Pays-Bas; 37; 1918; 105.

RX.ID=852616:


--------------------------------------------------------------------------------
Beilstein Data: Copyright (c) 1988-2005, Beilstein Institut zur Foerderung der Chemischen Wissenschaften licensed to Beilstein GmbH and MDL Information Systems GmbH. All rights reserved.
Reaction (Beilstein(2005/03):Reactions:Q02 hit 55, RX.ID 6046923)
Reaction ID 6046923
Product BRN 742467 2,4-dichloro-phenol
No. of Reaction Details 1
Find similar reactions not available

Field Availability List (Beilstein(2005/03):Reactions:Q02 hit 55, RX.ID 6046923)
Code Field Name Occ.
RX Reaction Details 1

Reaction Details (Beilstein(2005/03):Reactions:Q02 hit 55, RX.ID 6046923)
Reaction Classification Preparation (half reaction)
Ref. 1 3941867; Journal; Luebbecke; Boldt; ANCEAD; Angew. Chem.; 88; 1976; 641.
Ref. 2 3960646; Patent; Nissan Chem. Ind., Ltd.; JP 1780767; 1964; Chem.Abstr.; EN; 68; 104722g; 1968.
Ref. 3 3973673; Patent; Ufa Branch of the All-Union Scientific-Research Institute of Chemicals for Plant Protection; SU 197547; 1966; Chem.Abstr.; EN; 69; 18831f; 1968.
Ref. 4 4053611; Patent; Union Carbide; US 3281478; 1966; Chem.Abstr.; EN; 66; 10738p; 1967.
Ref. 5 4172057; Journal; Dorofeenko; NLSIAU; Nauchn. Zap. Lugansk. Skh. Inst.; 7; 1961; 203; Chem.Abstr.; 58; 2393g; 1963.
Ref. 6 4360018; Journal; Nekrasova; Zetkin; JAPUAW; J.Appl.Chem.USSR (Engl.Transl.); 38; 1965; 1380; ZPKHAB; Zh.Prikl.Khim.(Leningrad); 38; 1965; 1407.
Ref. 7 4543607; Journal; Tashiro et al.; OPPIAK; Org. Prep. Proced. Int.; 7; 1975; 189.
Ref. 8 4543662; Journal; Tashiro; Fukata; OPPIAK; Org. Prep. Proced. Int.; 8; 1976; 52,61.
Ref. 9 4644759; Journal; Bing et al.; AJCHAS; Aust. J. Chem.; 13; 1960; 317,319.
Ref. 10 4581339; Journal; Bacon; Doggart; JCSOA9; J. Chem. Soc.; 1960; 1332,1337.
Ref. 11 3847985; Journal; Kosower et al.; JOCEAH; J. Org. Chem.; 28; 1963; 630.
Ref. 12 4639890; Journal; Ying Hung So; Miller; SYNTBF; Synthesis; 1976; 468.
Ref. 13 5206615; Journal; Palmer; McVie; JCSPAC; J. Chem. Soc. B; 1968; 742.

RX.ID=6046923:




回复人:wanghong, (自己太年轻~~) 时间:2006-03-02 09:53:40   编辑 3楼
生产工艺
1:苯酚催化氯化法 由苯酚在铁催化下与氯气作用生成。
工艺过程: 将熔融的苯酚抽入氯化罐和吸收罐,加热至50~60度,通入氯气,氯气县境入氯化罐,在串联进入吸收灌,尾气通入石墨薄膜吸收塔,用水吸收尾气中的氯化氢。反应管的夹套及盘管通冷却水移出反应热。当氯化罐物料的相对密度达到1。402~1。405(40度)时为氯化终点。




回复人:sunyubo,★★ (雾雨电 qq:79196142) 时间:2006-03-03 12:38:23   编辑 4楼
已经打分了。


回复人:prager, (化学人) 时间:2006-04-05 16:15:40   编辑 5楼
我来补充:
1.J.Indian Chem. Soc. 1951 28 155
2.JOC 1979 2907-10
3.Synth.Comm. 1990 20 2991


回复人:njworkman, () 时间:2006-04-11 22:05:52   编辑 6楼
若真想做工艺生产,上述是不够的。杂质要求很严!
分离是学问!


回复人:小文, () 时间:2006-08-30 18:48:34   编辑 7楼
我可以提供,但不知该怎样和你联系?


回复人:小文, () 时间:2006-08-30 19:03:05   编辑 8楼
可采用两步氯化法,第一步氯化温度控制在<50度,比重d=1.28,色谱含量控制:邻氯30~30%. 2.6位<1%.2.4位17~18%.对氯50%左右.以2.6位为主,苯酚必须完全氯化.然后精馏.再进行第二步氯化................


回复人:有闲书蠹, () 时间:2006-11-10 10:47:06   编辑 9楼
你们好!二氯苯酚的杂质分离是怎样做的,我的信箱为wjh@shuangjianchem.com 请和我联系


回复人:温馨家园, (我来了,是新手,谢谢照顾!) 时间:2007-02-25 14:32:52   编辑 10楼
woyou,nimaima??


回复人:驰马人, (可以加我QQ344171266) 时间:2007-08-03 18:37:46   编辑 11楼
苯酚直接氧化法,受率在90%以上。


回复人:小文, () 时间:2007-08-07 08:27:22   编辑 12楼
2.4二氯苯酚中,其它杂位的酚去除的话,最好的方法是精馏.


得分人:Ftian-1,ecustlian-2,wanghong-2,


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