CAS: 2687-25-4; 3-Methylbenzene-1,2-Diamine

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2-Nitro-6,6'-Dimethylazobenzene置于甲酸,锌体系中,用 1,2-二氯乙烷 用作溶剂,化学反应 20.0H,以89%的收率获得2,3-二氨基甲苯
参考文献:一种邻苯二胺及其衍生物的制备方法
标题:一种邻苯二胺及其衍生物的制备方法
摘要:本发明具体涉及有机化合物的合成方法,为解决目前合成邻苯二胺衍生物的方法中工艺路线复杂,副产物多难以提纯,反应条件苛刻以及环境污染严重等问题,本发明提出了一种邻苯二胺及其衍生物的制备方法,以偶氮苯及其衍生物为原料,经过催化剂,氧化剂,硝化剂共同作用合成邻硝基偶氮苯及其衍生物,再通过还原试剂还原为邻苯二胺及其衍生物,本发明的合成方法具有原料价廉易得,操作简便安全,合成步骤短,纯化简单,无大量废酸污染等优点.

专利信息

专利号:US-7241900-B2
优先权日:2002-02-12
标题 :Synthesis of indole thiazole compounds as ligands for the Ah receptor
发明人：DELUCA HECTOR F; GRZYWACZ PAWEL K; SICINSKI RAFAL R
权利人:WISCONSIN ALUMNI RES FOUND
摘要:A method of synthesizing aromatic ketone compositions of formula I comprising the step of introducing a double bond into the 5 membered ring of the 4,5-dihydro-1,3-azoles moiety of formula II is disclosed. A method of synthesizing aromatic ketone compositions of formula I comprising the step of ring synthesis of the tetrahydro-1,3-azoles of formula XI is also disclosed.

专利号:US-6673960-B1
优先权日:1998-06-18
标 题 :Work-up of distillation residues from the synthesis of toluene diisocyanate
发明人：SCHWARZ HANS VOLKMAR; MAURER MARKUS; SANDER MICHAEL; STROEFER ECKHARD; LEUTHOLD RENE; HANTEL BURGHARD; RICHTER SIEGFRIED; THERRE JOERG
权利人:BASF AG
摘要:A process for working up distillation residues from the synthesis of tolylene diisocyanate by reaction of the distillation residues with water comprises reacting the TDI distillation residues with water in a continuous or semicontinuous process in a backmixed reactor in the presence of hydrolysate.

专利号:US-10703714-B2
优先权日:2017-05-26
标题:Process for the synthesis of aromatic carbamates
发明人：KELKAR ASHUTOSH ANANT; NIVANGUNE NAYANA TUSHAR; RANE VILAS HARI
权利人:COUNCIL SCIENT IND RES
摘要:The present invention discloses a process for the synthesis of aromatic carbamates from amine with dialkyl carbonate in the presence of binary or ternary mixed metal oxide catalyst. The present invention further discloses the yield of said aromatic carbamate in the range of 60 to 99%. Further, the ratio of amine to dialkyl carbonate is in the range of 1:2 to 1:30.

专利号:US-5329022-A
优先权日:1991-01-16
标 题:Process for the synthesis of citraconimides
发明人：TALMA AUKE G; HOOFT HENDRIKA P M; VAN DE BOVENKAMP-BOUWMAN ANNA
权利人:AKZO AMERICA INC
摘要:The present invention relates to an improved synthesis method for the making of citraconimides wherein a citraconic anhydride is reacted with 0.5 to 2.0 equivalents of at least one amine salt. This process may be carried out in a solvent and generally leads to excellent yields of the citraconimides with high selectivity and easy purification. The present inventional so relates to a process for the production of citraconic anhydride from itaconic anhydride with an amine or phosphine catalyst and in a cosolvent.

专利号:US-2005239767-A1
优先权日:2003-10-28
标题 :Intermolecular SNAr of the heterocycle-activated nitro and fluoro groups-application in the synthesis of polyazamacrocyclic ligands
发明人：CHAN MICHAEL K; FEKNER TOMASZ
权利人:CHAN MICHAEL K; FEKNER TOMASZ
摘要:A new class of tetracylic benzimidazole compounds and derivatives thereof. Additionally provided is a synthetic route for the generation of these and related compounds via Intramolecular Aromatic Nucleophilic Substitution (S N Ar) of the Benzimidazole-Activated Nitro Groups. Additionally, a facile route for the generation of novel phenol species as thermal decomposition of compounds the S N Ar product, which occurs at high temperature resulting in cleavage of the ether linkage and formation of a vinyl group and phenol is provided. Also provided are methods of using the compounds described herein in the treatment HIV.

专利号:US-2024254395-A1
优先权日:2021-06-02
标题 :Pyrolysis of polyurethane compound-containing material in order to recover raw materials
发明人：EIDEN STEFANIE; BELLINGHAUSEN RAINER; WOLF AUREL; HAHN CHRISTIAN; LODDENKEMPER TIM; JENDRZOK CAROLA
权利人:COVESTRO DEUTSCHLAND AG
摘要:The invention relates to a process according to claim 1 and pyrolysis devices used therein for the pyrolysis of pyrolysis stock comprising polyurethane-containing material, allowing carrying out pyrolysis on an industrial scale. According to the invention, even with higher amounts of pyrolysis stock an amount of pyrolysis product is obtained that contains cleavage products which can be reused for the synthesis of polyurethane-containing material.