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
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.
A one-pot three-component reaction has been described for the synthesis of substituted 2-arylthio arylcyanamides. A cheap and readily available iron source was used as a catalyst for this reaction. Consecutive addition and domino C–S cross-coupling reactions have been involved in this reaction.
Copper-Catalyzed Domino One-Pot Synthesis of 2-(Arylselanyl)arylcyanamides
作者:Tamminana Ramana、Tharmalingam Punniyamurthy
DOI:10.1002/ejoc.201100785
日期:2011.7.26
Domino C–Se cross-coupling of 2-(iodoaryl)selenoureas with aryl iodides has been accomplished in the presence of a copper(I)–1,1-phenanthroline complex at moderate temperature. The reactions involve intra- and intermolecular C–Se cross-coupling to give the substituted 2-(arylselanyl)arylcyanamides. Aryl iodides having electron-donating and -withdrawing substituents are compatible, affording the targetselanyl