CAS: 142-04-1; Aniline Hydrochloride

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专利信息

专利号:US-2022389226-A1
优先权日:2019-11-15
标 题:A continuous process for the synthesis of azo dyes involving in-situ generation of diazonium salts
发明人：KULKARNI AMOL ARVIND; SHUKLA CHINMAY ABHAY
权利人:COUNCIL SCIENT IND RES
摘要:The present disclosure provides a continuous process for the synthesis coupled compounds of diazonium salts including azo dyes involving in-situ generation of diazonium salts. It further discloses a set up to carry out the process for the synthesis of coupled compounds of diazonium salts.

专利号:US-4097479-A
优先权日:1977-03-11
标题 :Synthesis of 5-substituted tetrazoles
发明人：LEIPZIG THEODORE J
权利人:MILES LAB
摘要:Synthesis of 5-substituted tetrazoles via reaction of an organic nitrile with azide anion is improved by performing the reaction in an amine as solvent and in the presence of an acid-addition salt of the amine as catalyst.

专利号:US-7576234-B2
优先权日:2002-05-15
标题 :Synthesis of 2-alkyl amino acids
发明人：CHORGHADE MUKUND S; GURJAR MUKUND K; MOHAPATRA DEBENDRA K
权利人:GENZYME CORP
摘要:Non-natural amino acids such as 2-alkylated amino acids allow for the synthesis of a wider variety of peptidal and non-peptidal pharmaceutically active agents. A method of preparing a 2-alkyl amino acid involves a Michael-type addition of a nucleophile to a dialkyl 2-methylidenylpropan-1,3-dioate and the conversion of a ester moiety into an amino moiety. The present invention also discloses a method of preparing a class of iron chelating agents related to desferrithiocin, all of which contain a thiazoline ring. In this method, an aryl nitrile or imidate is condensed with cysteine, a 2-alkyl cysteine, or a cysteine ester.

专利号:US-5861540-A
优先权日:1986-10-29
标题:Substituted 1,1,1-triaryl-2,2,2-trifuoroethanes and processes for their synthesis
发明人：ALSTON WILLIAM B; GRATZ ROY F
权利人:NASA
摘要:Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2 -trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cyclic dianhydride or diamine of 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethanes. The synthesis of (1) is accomplished by the condensation reaction of an aryltrifluoromethyl ketone with a dialkylaryl compound. The synthesis of (2) is accomplished by oxidation of (1). The synthesis dianhydride of (3) is accomplished by the conversion of (2) to its corresponding cyclic dianhydride. The synthesis of the diamine is accomplished by the similar reaction of an aryltrifluoromethyl ketone with aniline or alkyl substituted or disubstituted anilines. Also, other derivatives of the above are formed by nucleophilic displacement reactions.

专利号:US-4758380-A
优先权日:1986-10-29
标题 :Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis
发明人：ALSTON WILLIAM B; GRATZ ROY F
权利人:NASA
摘要:Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cyclic dianhydride or diamine of 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethanes. The synthesis of (1) is accomplished by the condensation reaction of an aryltrifluoromethyl ketone with a dialkylaryl compound. The synthesis of (2) is accomplished by oxidation of (1). The synthesis dianhydride of (3) is accomplished by the conversion of (2) to its corresponding cyclic dianhydride. The synthesis of the diamine is accomplished by the similar reaction of an aryltrifluoromethyl ketone with aniline or alkyl substituted or disubstituted anilines. Also, other derivatives of the above are formed by nucleophilic displacement reactions.

专利号:US-4912238-A
优先权日:1986-10-29
标 题:Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis
发明人：ALSTON WILLIAM B; GRATZ ROY F
权利人:NASA
摘要:Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cyclic dianhydride or diamine of 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethanes. The synthesis of (1) is accomplished by the condensation reaction of an aryltrifluoromethyl ketone with a dialkylaryl compound. The synthesis of (2) is accomplished by oxidation of (1). The synthesis dianhydride of (3) is accomplished by the conversion of (2) to its corresponding cyclic dianhydride. The synthesis of the diamine is accomplished by the similar reaction of an aryltrifluoromethyl ketone with aniline or alkyl substituted or disubstituted anilines. Also, other derivatives of the above are formed by nucleophilic displacement reactions.