Three-componentreactions involving amines, aldehydes, and elemental sulfur powder are reported to afford thioamides in a simple one-pot procedure in the absence of a catalyst. A variety of thioamides can be obtained in good to excellent yields up to 88 %.
Sulfonic Acid Functionalized Nano Γ-Al<sub>2</sub>O<sub>3</sub>: a New, Efficient, and Reusable Catalyst for Synthesis of Thioamides
作者:Zhikui Yin、Bin Zheng、Fang Ai
DOI:10.1080/10426507.2013.769983
日期:2013.10.1
Abstract Sulfonicacidfunctionalized nano γ-Al2O3 is easily prepared by the reaction of nano γ-Al2O3 with 1,3-propane sulfone. This reagent can be used as an eficient catalyst for the synthesis of thioamides. This new method consistently has the advantages of excellent yields and short reaction times. Further, the catalyst can be recovered for several times. GRAPHICAL ABSTRACT
Sulfated tungstate: An efficient catalyst for synthesis of thioamides via Kindler reaction
作者:Sagar P. Pathare、Pramod S. Chaudhari、Krishnacharya G. Akamanchi
DOI:10.1016/j.apcata.2012.03.012
日期:2012.5
New application of sulfated tungstate, a mildly acidic solid inorganic acid, as reusable heterogeneouscatalyst for efficient Kindler reaction, a three component reactions of aldehydes, amines and sulfur, for synthesis of thioamides is discussed.
Efficient Synthesis of Thiobenzanilides by Willgerodt-Kindler Reaction with Base Catalysts
作者:Takaki Kanbara、Ken Okamoto、Takakazu Yamamoto
DOI:10.1055/s-2007-991073
日期:——
Willgerodt-Kindlerreaction between anilines and ben- zaldehydes readily proceeded in the presence of catalytic amount of Na2S·9H2O to give thiobenzanilides in moderate to good yields. The base catalyst was also available for preparation of primary thiobenzamide.
Transformation of Amides to Thioamides Using an Efficient and Novel Thiating Reagent
作者:Mohamed S. Gomaa、Gaber El Enany、Walid Fathalla、Ibrahim A. I. Ali、Samir. M. El Rayes
DOI:10.3390/molecules27238275
日期:——
convenient protocol was developed for the transformation of N-aryl-substituted benzamides to N-aryl-substituted benzothioamides using N-isopropyldithiocarbamate isopropyl ammonium salt as a novel thiating reagent. The major advantages of this protocol are its one-pot procedure, short reaction times, mild conditions, simple work-up, high yields and pure products.