CN106986774A - A kind of preparation method of 2 nitrobiphenyl - Google Patents

A kind of preparation method of 2 nitrobiphenyl Download PDF

Info

Publication number
CN106986774A
CN106986774A CN201710330220.4A CN201710330220A CN106986774A CN 106986774 A CN106986774 A CN 106986774A CN 201710330220 A CN201710330220 A CN 201710330220A CN 106986774 A CN106986774 A CN 106986774A
Authority
CN
China
Prior art keywords
preparation
reaction
nitro biphenyl
nitrobiphenyl
copper powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710330220.4A
Other languages
Chinese (zh)
Other versions
CN106986774B (en
Inventor
杨青
赵士民
徐剑霄
张�浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHINA SYNCHEM TECHNOLOGY Co Ltd
Original Assignee
CHINA SYNCHEM TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHINA SYNCHEM TECHNOLOGY Co Ltd filed Critical CHINA SYNCHEM TECHNOLOGY Co Ltd
Priority to CN201710330220.4A priority Critical patent/CN106986774B/en
Publication of CN106986774A publication Critical patent/CN106986774A/en
Application granted granted Critical
Publication of CN106986774B publication Critical patent/CN106986774B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06Preparation of nitro compounds
    • C07C201/12Preparation of nitro compounds by reactions not involving the formation of nitro groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention discloses a kind of preparation method of 2 nitrobiphenyl; it is related to technical field of organic synthesis; reaction raw materials are used as using 2 nitrobenzene NITRODIAZONIUM FLUOROBORATEs and chlorobenzene; copper powder is used as catalyst; ullmann reaction occurs for backflow under nitrogen protection; reaction is filtered to remove insoluble matter after terminating, and the nitrobiphenyl of product 2 is made through vacuum distillation.2 nitrobiphenyl purity can reach more than 98% made from synthetic method of the present invention, and yield reaches more than 75%, simplify post-processing operation on the basis of low preparation cost, it is ensured that product purity.

Description

A kind of preparation method of 2 nitro biphenyl
Technical field:
The present invention relates to technical field of organic synthesis, and in particular to a kind of preparation method of 2 nitro biphenyl.
Background technology:
2 nitro biphenyl as function dough biphenyl compound, in agricultural chemicals and medical synthesis field, with important Value.The analog of presently disclosed 2 nitro biphenyl, generally passes through precious metal palladium, cobalt, Huo Zhetong using boric acid as substrate Cross reaction under high pressure to prepare, such as:
1st, patent CN201410692141, using palladium diacetate as catalyst, use to chlorophenylboronic acid and 2- nitrophenyl hydrazines for Raw material, is prepared for 2 nitro biphenyl class compound.
2nd, patent CN201410785170, using palladium as catalyst, the nitre replaced using 3,4,5- trifluoro phenyl boric acids and ortho position Base benzene is raw material, is prepared for 2 nitro biphenyl class compound.
3rd, document [Catalysis Communications, 2016, Vol.82, p24-28], [Journal of the American Chemical Society,2016,Vol.138,p6392-5]、[Advanced Synthesis and Catlysis, 2010, Vol.352, p3089-97], deliver and be coupled by suzuki, by 2- chloronitrobenzenes and the benzene of substitution Boric acid is under noble metal catalyst, the method that coupling prepares 2 nitro biphenyl class compound.
The content of the invention:
The technical problems to be solved by the invention are that providing one kind prepares that cost is low, isolate and purify simple to operate and product The preparation method of the high 2 nitro biphenyl of purity.
The technical problems to be solved by the invention are realized using following technical scheme:
A kind of preparation method of 2 nitro biphenyl, reaction raw materials, copper are used as using 2- nitrobenzene NITRODIAZONIUM FLUOROBORATE and chlorobenzene As catalyst, under nitrogen protection backflow ullmann reaction occurs for powder, and reaction is filtered to remove insoluble matter after terminating, and through decompression Product 2 nitro biphenyl is made in distillation.
The mol ratio of the 2- nitrobenzene NITRODIAZONIUM FLUOROBORATE, chlorobenzene and copper powder is 1:5-10:0.03-0.05.
The reaction time is 5-8h.
The copper powder mesh number is 100-200 mesh.
The beneficial effects of the invention are as follows:
(1) using excessive chlorobenzene simultaneously as reaction raw materials and reaction dissolvent, without adding other reaction dissolvents, reduce The independent reclaimer operation of reaction dissolvent, reaction terminate after only need vacuum distillation chlorobenzene can using unreacted chlorobenzene and as react The chlorobenzene of solvent is reclaimed in the lump, it is to avoid the waste of raw material and directly pollution of the discharge to environment;
(2) using copper powder as catalyst, 2 nitro biphenyl is prepared through ullmann reaction, different from through suzuki coupling reactions The method for preparing 2 nitro biphenyl, it is to avoid the use of palladium class noble metal catalyst, is urged using copper powder cheap and easy to get as reaction Agent, significantly reduces the use cost of catalyst, so that suitable for industrialized production;
(3) more than 98% can be reached by 2 nitro biphenyl purity made from herein described synthetic method, and yield reaches To more than 75%, post-processing operation is simplified on the basis of low preparation cost, it is ensured that product purity.
Embodiment:
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
Chlorobenzene (10mol, 1125.6g) is put into reactor as solvent, add 2- nitros NITRODIAZONIUM FLUOROBORATE (1mol, 236.92g), a certain amount of 100 mesh copper powder (0.05mol, 3.18g), system is begun to warm up after carrying out nitrogen displacement, back flow reaction 8h, cooling is filtered to remove insoluble matter, and filtrate carries out vacuum distillation, obtains product 2 nitro biphenyl, purity 98.8%, yield 75.8%.
Embodiment 2
Chlorobenzene (5mol, 562.8g) is put into reactor as solvent, add 2- nitros NITRODIAZONIUM FLUOROBORATE (1mol, 236.92g), a certain amount of 200 mesh copper powder (0.05mol, 3.18g), system is begun to warm up after carrying out nitrogen displacement, back flow reaction 5h, cooling is filtered to remove insoluble matter, and filtrate carries out vacuum distillation, obtains product 2 nitro biphenyl, purity 98.5%, yield 76.1%.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (4)

1. a kind of preparation method of 2 nitro biphenyl, it is characterised in that:Using 2- nitrobenzene NITRODIAZONIUM FLUOROBORATE and chlorobenzene as anti- Raw material is answered, as catalyst, under nitrogen protection backflow ullmann reaction occurs for copper powder, and reaction is filtered to remove insoluble after terminating Thing, and product 2 nitro biphenyl is made through vacuum distillation.
2. the preparation method of 2 nitro biphenyl according to claim 1, it is characterised in that:The 2- nitrobenzene fluoboric acid weight The mol ratio of nitrogen salt, chlorobenzene and copper powder is 1:5-10:0.03-0.05.
3. the preparation method of 2 nitro biphenyl according to claim 1, it is characterised in that:The reaction time is 5-8h.
4. the preparation method of 2 nitro biphenyl according to claim 1, it is characterised in that:The copper powder mesh number is 100- 200 mesh.
CN201710330220.4A 2017-05-11 2017-05-11 A kind of preparation method of 2 nitro biphenyl Active CN106986774B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710330220.4A CN106986774B (en) 2017-05-11 2017-05-11 A kind of preparation method of 2 nitro biphenyl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710330220.4A CN106986774B (en) 2017-05-11 2017-05-11 A kind of preparation method of 2 nitro biphenyl

Publications (2)

Publication Number Publication Date
CN106986774A true CN106986774A (en) 2017-07-28
CN106986774B CN106986774B (en) 2019-01-22

Family

ID=59418062

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710330220.4A Active CN106986774B (en) 2017-05-11 2017-05-11 A kind of preparation method of 2 nitro biphenyl

Country Status (1)

Country Link
CN (1) CN106986774B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104529786A (en) * 2014-12-16 2015-04-22 上海生农生化制品有限公司 Method for synthesizing 3,4,5-trifluoro-2'-nitrobiphenyl

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104529786A (en) * 2014-12-16 2015-04-22 上海生农生化制品有限公司 Method for synthesizing 3,4,5-trifluoro-2'-nitrobiphenyl

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DONG-FANG JIANG,ET AL.: ""A General, Regiospecific Synthetic Route to Perfluoroalkylated Arenes via Arenediazonium Salts with RFCu(CH3CN) Complexes"", 《EUR. J. ORG. CHEM.》 *
LONGFEI GENG,ET AL.: ""Highly efficient palladium catalysts supported on nitrogen contained polymers for Suzuki-Miyaura reaction"", 《CATALYSIS COMMUNICATIONS》 *

Also Published As

Publication number Publication date
CN106986774B (en) 2019-01-22

Similar Documents

Publication Publication Date Title
CN108017575B (en) Method for synthesizing crizotinib intermediate by using microchannel reactor
CN105251482A (en) Ruthenium palladium/carbon catalyst of cyclohexanecarboxylic acid synthesized through benzoic acid hydrogenation and preparation method and application thereof
CN101811925B (en) Preparation method of paraxylene cyclic dimer
CN114308027A (en) A supported carbon-coated bimetallic catalyst and its application
CN103319313A (en) Method for preparing o-phenyl phenol by ring opening of dibenzofuran
CN101891628A (en) Preparation method of 1,2-propane diamine
CN101664699B (en) Catalyzer used for preparing acidamide compound and application thereof
CN104844462A (en) Synthesis process of dimido dipheny compound
CN114308024A (en) A kind of preparation method and application of doped carbon-coated platinum catalyst
CN106986774A (en) A kind of preparation method of 2 nitrobiphenyl
CN104292113A (en) Preparation method of 3-chloro-4-fluoroaniline
CN103172480A (en) Method for preparing iodo aromatic hydrocarbon
CN106748906B (en) A kind of synthetic method of bumetanide
CN105017030A (en) Preparation method of 2,2'-bistrifluoromethyl-4,4'-diaminobiphenyl
CN106732725A (en) The preparation and its application of the carbon-based transition-metal catalyst of MgO-Supported N doping
CN108658929B (en) Preparation method of high-purity 2- (4-fluorophenyl) thiophene
CN102617358A (en) Preparation method of arylamine
CN112517013B (en) Cu-based catalyst and method for preparing gamma-valerolactone and delta-cyclopentalactone by using same
CN102070467A (en) Method for preparing 1,5-diaminonaphthalene by reducing 1,5-dinitronaphthalene by using hydrazine hydrate
CN105968018B (en) A kind of method of solvent-free catalysis substituted-nitrobenzene hydrogenating reduction
CN102173993B (en) Method for synthesizing 4,6-diamino resorcinol dihydrochloride (DAR)
CN103588599A (en) Method for preparing hydroxylamine through nitro-reduction
CN111138309B (en) A method for catalytic hydrogenation reduction of aromatic nitro compounds
CN113372231A (en) Preparation method of 5-amino-1, 2, 3-benzenetricarboxylic acid
CN104292109A (en) Method for preparing p-phenylenediamine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A preparation method of 2-nitrobiphenyl

Granted publication date: 20190122

Pledgee: Bengbu financing guarantee Group Co.,Ltd.

Pledgor: CHINA SYNCHEM TECHNOLOGY Co.,Ltd.

Registration number: Y2024980010170

PE01 Entry into force of the registration of the contract for pledge of patent right