Trapping Reactive Intermediates by Mechanochemistry: Elusive Aryl<i>N</i>-Thiocarbamoylbenzotriazoles as Bench-Stable Reagents
作者:Vjekoslav Štrukil、Davor Gracin、Oxana V. Magdysyuk、Robert E. Dinnebier、Tomislav Friščić
DOI:10.1002/anie.201502026
日期:2015.7.13
revealed the formation of aryl N‐thiocarbamoylbenzotriazoles, reactiveintermediates deemed unisolable in solution. The first‐time isolation and structural characterization of these elusive molecules demonstrates the ability of mechanochemistry to access otherwise unobtainable intermediates and offers a new range of masked isothiocyanate reagents.
A NEW AND EFFICIENT SOLID STATE SYNTHESIS OF DIARYL THIOUREAS
作者:Jian-Ping Li、Yu-Lu Wang、Hong Wang、Qian-Fu Luo、Xiao-Yang Wang
DOI:10.1081/scc-100103270
日期:2001.1
Fourteen diaryl thioureas which are physiologically active have been synthesized in the solidstate at room temperature. The reaction needs only simple equipment and gives excellent yields.
Nickel Catalysis Enables Access to Thiazolidines from Thioureas via Oxidative Double Isocyanide Insertion Reactions
作者:Wen-Kui Yuan、Yan Fang Liu、Zhenggang Lan、Li-Rong Wen、Ming Li
DOI:10.1021/acs.orglett.8b03098
日期:2018.11.16
Ni-catalyzed oxidative double isocyanide insertion to thioureas under air conditions, in which thioureas play three roles as a substrate, a ligand, and overcoming isocyanide polymerization. The reaction is featured by employing a low-cost and low loading Ni(acac)2 catalyst, without any additives, and high atom economy. This is the first example to directly apply a Ni(II) catalyst in oxidative double isocyanide
A simple and straightforward synthesis of phenyl isothiocyanates, symmetrical and unsymmetrical thioureas under ball milling
作者:Ze Zhang、Hao-Hao Wu、Ya-Jun Tan
DOI:10.1039/c3ra43252a
日期:——
anilines were efficiently transformed into isothiocyanates (in presence of 5.0 equiv. CS2) or symmetricalthioureas (in presence of 1.0 equiv. CS2), without using any other harsh or toxic decomposition reagent. Some in situ generated isothiocyanates can directly “click” with other amines to afford unsymmetricalthioureas.
Ytterbium(III) Triflate Catalyzed One-Pot Synthesis of 1,3-Thiazolidin-2-imines from Epichlorohydrin and Thioureas
作者:Weike Su、Chuangwei Liu、Weiguang Shan
DOI:10.1055/s-2008-1032100
日期:——
2-Arylimino-3-aryl-1,3-thiazolidines were successfully obtained from epichlorohydrin and thioureas in DMF catalyzed by Yb(OTf)3. Inversion of the configuration occurred at the chiral center of the epoxide.