CAS: 614-68-6; 1-Isocyanato-2-Methylbenzene

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CAS号32315-10-9 三光气 | CAS号95-53-4 邻甲苯胺 | CAS号201230-82-2 carbon monoxide | CAS号88-72-2 邻硝基甲苯 | CAS号75-44-5 光气 | CAS号24424-99-5 二碳酸二叔丁酯 | CAS号933-88-0 邻甲基苯甲酰氯 | CAS号527-85-5 2-甲基苯甲酰胺 | CAS号93-68-5 2'-甲基乙酰乙酰苯胺(AAOT) | CAS号503-38-8 氯甲酸三氯甲酯 | CAS号108714-89-2 Carbamic acid, ... | CAS号10532-63-5 (2-methylphenyl... | CAS号52986-66-0 2-(氯甲基)苯基异氰酸酯 | CAS号181517-99-7 (4-{[(2-Methylp... | CAS号13436-49-2 1-(1H-吲唑-1-基)乙酮 | CAS号3026-99-1 N-O-TOLYL-DIACE... | CAS号28788-17-2 Urea,N-hydroxy-... | CAS号29209-17-4 2-Methyl-N-(2-m... | CAS号271-44-3 吲唑 | CAS号161888-39-7 1-(2-methylphen...

2'-甲基乙酰乙酰苯胺 反应生成 邻甲苯异氰酸酯
参考文献:Novel Method For The Preparation Of Organic Isocyanates1
标题:Novel Method For The Preparation Of Organic Isocyanates1
摘要:
DOI:10.1021/jo01069A048

专利信息

专利号:WO-9740025-A1
优先权日:1996-04-19
标 题 :Solid phase and combinatorial synthesis of substituted 1,2,3-triazoles and of arrays of substituted 1,2,3-triazoles
发明人：DOERWALD FLORENCIO ZARAGOZA
权利人:NOVO NORDISK AS; DOERWALD FLORENCIO ZARAGOZA
摘要:A solid phase method for the synthesis of a plurality of differently substituted 1,2,3-triazoles with a wide variety of side-chain substituents as compounds of potential therapeutic interest. The 1,2,3-triazoles are prepared by acylation of a substrate-bound primary or secondary amine with a 3-oxoalkanoic acid and reaction of the resulting amide with a primary amine under dehydrating conditions to give an enamine. Treatment of this substrate-bound enamine with a sulfonyl azide in the presence of a base gives the corresponding 1,2,3-triazoles. These may be screened on the substrate or cleaved from the substrate and then screened in solution. The efficient synthesis of a wide variety of 1,2,3-triazoles using automated synthesis technology of the present method makes these compounds attractive candidates for the generation and rapid screening of diverse triazole-based libraries. The method disclosed here provides an easy and fast access to highly diverse heterocyclic compounds of therapeutic interest, amenable to automatization.

专利号:US-6924385-B2
优先权日:2002-11-18
标 题:Method for synthesis of aliphatic isocyanates from aromatic isocyanates
发明人：LETTMANN CHRISTIAN; KOHLSTRUK STEPHAN; STOCHNIOL GUIDO; SPYROU EMMANOUIL
权利人:DEGUSSA
摘要:The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H 12 MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H 12 MDI with a trans-trans isomer content of <30%, preferably of <20%, particularly preferably of 5 to 15%.

专利号:US-4267070-A
优先权日:1979-10-30
标题:Catalyst for the synthesis of aromatic monoisocyanates
发明人：NEFEDOV BORIS K; MANOV-JUVENSKY VLADIMIR I; DERGUNOV JURY I; RYSIKHIN ANATOLY I; CHIMISHKIAN ALEXANDR L
权利人:NEFEDOV BORIS K; MANOV JUVENSKY VLADIMIR I; DERGUNOV JURY I; RYSIKHIN ANATOLY I; CHIMISHKIAN ALEXANDR L
摘要:A catalyst for the synthesis of aromatic monoisocyanates comprising 1.64 to 16.6% by weight of palladium chloride, 0.16 to 47.6% by weight of an oxide of a metal of Group VB of the periodic system, 1.5 to 81.8% by weight of an oxide of a metal of Group VI B of the periodic system, 1.64 to 89.8% by weight of pyridine or an alkylsubstituted pyridine. n The use of the catalyst according to the invention in the synthesis of aromatic monoisocyanates makes it possible to obtain a high degree of conversion of the starting compound of up to 100%, a high yield of the desired product of up to 97%, and increased productivity of the catalyst of up to 40 g of the desired product per g of PdCl 2 per hour.

专利号:US-9994508-B2
优先权日:2012-12-11
标 题:Versatile and functionalised intermediates for the synthesis of vitamin D and novel vitamin D derivatives
发明人：LOPEZ PEREZ BORJA; SIGUEIRO PONTE RITA; MAESTRO SAAVEDRA MIGUEL A; MOURINO MOSQUERA ANTONIO
权利人:ENDOTHERM GMBH
摘要:Novel intermediates for the complete synthesis of vitamin D are provided that allow a great versatility of functional groups in the final vitamin derivatives. Vitamin derivatives that are epimeric in position 3 and vitamin derivatives with a wide range of functionalities in position 18, including compounds with isotopic labelling are provided.

专利号:US-2007282078-A1
优先权日:2006-06-01
标题:Synthesis of aryl N-acylurea from aryl isocyanates or aryl carbodiimides for use as intermediate in novel sequential self-repetitive reaction (SSRR) to form amides, amide-imides and their polymers
发明人：DAI SHENGHONG A; LIN JIANG-JEN; WEI KUAN-LIANG; WU CHIH-HENG; HUANG WEI-HSIANG
权利人:DAI SHENGHONG A; LIN JIANG-JEN; WEI KUAN-LIANG; WU CHIH-HENG; HUANG WEI-HSIANG
摘要:Disclosed is a process for synthesizing an aryl N-acylurea in both high selectivity and high yield, comprising reacting an aryl carbodiimide with a carboxylic acid under mild conditions. Thermolysis of N-acylureas at above about 120° C. gives amides and isocyanates, and the latter will undergo the repetitive reaction sequences in the presence of a carbodiimide catalyst. Based on this unique model, a sequential self-repetitive reaction (SSRR) is also developed in a versatile manner for converting aryl carbodiimides into amides, polyamides, polyamide-imides and polyamide-imide elastomers.

专利号:WO-9102739-A1
优先权日:1989-08-11
标题:Synthesis of glycosides having predetermined stereochemistry
发明人：DANISHEFSKY SAMUEL J
权利人:UNIV YALE
摘要:Methods of stereoselectively preparing a substituted 1,2-anhydrosugar wherein a substituted glycal is converted into a 1,2-anhydrosugar that is utilized to glycosylate a hydroxyl group containing glycal, are disclosed. Methods of preparing a saccharide multimer wherein a nucleophile is reacted with a substituted 1,2-anhydrosugar having a plurality of non-participating substituents, are disclosed. In addition, methods of preparing stereospecific halo-substituted saccharide multimers by haloglycosylation of a glycosyl donor substituted glycal and a glycosyl acceptor glycal derivative in the absence of water and in the presence of a halonium ion, are disclosed. Methods of preparing stereospecific particle-linked halo-substituted saccharide multimers, by haloglycosylation of a particle-linked nucleophilic hydroxyl group with a substituted glycal and a halonium ion, are also disclosed.