Synthesis of bis(arylcarbonylamino-1H-benzimidazol-5-yl) ethers
摘要:
A procedure has been developed for the synthesis of bis(arylcarbonylaniino-1H-benzimidazol-5-yl) ethers by reaction of the corresponding substituted benzoyl chloride with sodium cyanamide, followed by treatment of the resulting N-cyanobenzamide with 4-(3,4-diaminophenoxy)benzene-1,2-diamine in acid medium.
Palladium-catalyzed carbonylative synthesis of N-cyanobenzamides from aryl iodides/bromides and cyanamide
作者:Rajendra S. Mane、Patrik Nordeman、Luke R. Odell、Mats Larhed
DOI:10.1016/j.tetlet.2013.10.040
日期:2013.12
A novel and convenient protocol for the synthesis of N-cyanobenzamides starting from readily available aryl halides and cyanamide via palladium-catalyzed aminocarbonylation has been developed. The protocol utilizes Mo(CO)6 as the CO source or CO(gas) and affords the desired N-cyanobenzamides in moderate to good yields.
Ultrasound-Assisted Synthesis of N-Acylcyanamides and N-Acyl-Substituted Imidazolones from Carboxylic Acids by Using Trichloroisocyanuric Acid/Triphenylphosphine
A convenient ultrasound-assisted one-pot synthesis of N-acylcyanamides starting from readily available carboxylicacids and sodium cyanamide has been developed. Upon activation in the presence of trichloroisocyanuric acid (TCCA) and triphenylphosphine, a range of carboxylicacids was converted into N-acylcyanamides in good to excellent yields within 10 minutes at room temperature without base. Remarkably
Water-soluble anthraquinone compounds, preparation thereof, and use
申请人:Hoechst AG
公开号:US05430147A1
公开(公告)日:1995-07-04
Water-soluble anthraquinone compounds, preparation thereof, and use thereof as dyes. There are described anthraquinone compounds conforming to the formula (1) ##STR1## where A is the radical of a sulfo-containing anthraquinone radical, R.sup.1 and R.sup.2 are each independently of the other hydrogen or lower alkyl, X is an alkali-detachable radical, such as fluorine and chlorine, R is hydrogen, lower alkyl or lower alkoxy, and M is hydrogen or an alkali metal. The anthraquinone compounds have fiber-reactive properties and are used as dyes for dyeing and printing hydroxy- and/or carboxamido-containing material, in particular fiber material, for example cellulose fiber materials, wool and synthetic polyamide, in brilliant blue shades.
Wasserlösliche Anthrachinonverbindungen, Verfahren zu ihrer Herstellung und ihre Verwendung als Farbstoffe
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0601416A1
公开(公告)日:1994-06-15
Es werden Anthrachinonverbindungen entsprechend der allgemeinen Formel (1)
beschrieben, in welcher bedeuten:
Aist der Rest eines sulfogruppenhaltigen Anthrachinonrestes;
R¹ und R²sind beide unabhängig voneinander Wasserstoff oder niederes Alkyl;
Xist ein unter Einwirkung eines alkalisch wirkenden Mittels abspaltbarer Rest, wie Fluor und Chlor;
Rist Wasserstoff, niederes Alkyl oder niederes Alkoxy;
Mist Wasserstoff oder ein Alkalimetall.
Die Anthrachinonverbindungen haben faserreaktive Eigenschaften und dienen als Farbstoffe zum Färben und Bedrucken von hydroxy- und/oder carbonamidgruppenhaltigem Material, insbesondere Fasermaterial, wie beispielsweise Cellulosefasermaterialien, Wolle und synthetisches Polyamid, in brillanten blauen Tönen.