A one-pot preparation of cyanamide from dithiocarbamate using molecular iodine
作者:Jayashree Nath、Bhisma K. Patel、Latonglila Jamir、Upasana Bora Sinha、K. V. V. V. Satyanarayana
DOI:10.1039/b914283p
日期:——
method for the synthesis of cyanamides from dithiocarbamate salts via a double desulfurization strategy using molecular iodine is disclosed. Dithiocarbamates, by the action of iodine yield isothiocyanates in situ, which on treatment with aqueous NH3 give thioureas. The thioureas so generated undergo further oxidative desulfurization with I2 giving corresponding cyanamides in good yields. Environmental
An efficient synthesis of cyanamide from amine promoted by a hypervalent iodine(III) reagent
作者:Harisadhan Ghosh、Ramesh Yella、Abdur Rezzak Ali、Santosh K. Sahoo、Bhisma K. Patel
DOI:10.1016/j.tetlet.2009.03.017
日期:2009.5
In a one-pot strategy we have achieved an efficient method for the synthesis of organic cyanamides starting from dithiocarbamic acid salts/amines. In this strategy the in situ generated alkyl or aryl isothiocyanates, obtained by the desulfurization of dithiocarbamic acid salts with diacetoxyiodobenzene (DIB) react with aqueous ammonia forming alkyl or aryl thiourea which on subsequent oxidative desulfurization
A Novel One-pot Synthesis of Isothiocyanates and Cyanamides from Dithiocarbamate Salts Using Environmentally Benign Reagent Tetrapropylammonium Tribromide
作者:Neivotsonuo Bernadette Kuotsu、Latonglila Jamir、Tovishe Phucho、Upasana Bora Sinha
DOI:10.17344/acsi.2017.3342
日期:2017.12.15
A highly efficient and simple protocol for the synthesis of isothiocyanates and cyanamides from their respective amines in the presence of a mild, efficient, and non-toxic reagent tetrapropylammonium tribromide is described. High environmental acceptability of the reagents, cost effectiveness and high yields are the important attributes of this methodology.
Use of 2,5-Disubstituted Thiazol-4-One Derivatives in Drugs
申请人:Frank Robert
公开号:US20090215758A1
公开(公告)日:2009-08-27
The invention relates to 2,5-disubstituted thiazol-4-one derivatives and to their use in the production of drugs, to methods for producing them and to drugs containing said compounds.