14182-63-9Relevant articles and documents
Willgerodt-kindler's microwave-enhanced synthesis of thioamide derivatives
Poupaert, Jacques H.,Duarte, Sandro,Colacino, Evelina,Depreux, Patrick,McCurdy, Christopher R.,Lambert, Didier L.
, p. 1959 - 1973 (2004)
The Willgerodt-Kindler reaction was applied to a series of aromatic aldehydes and ketones. The reactions were performed in a dipolar aprotic solvent (mainly DMF) in the presence of a base catalyst (4-methylmorpholine) and utilized microwave (mw) irradiation. The pulsed mw technique rather than the continuous irradiation was preferred because it limited side reactions and hydrogen sulfide production. While not always superior to the thermal activation of the reaction, the procedure involving repetitive short pulses of microwave irradiation was found to be faster and result in consistently cleaner products. The technique can be easily applied in a fast parallel synthesis process.
The rapid synthesis of thiomorpholides by Willgerodt-Kindler reaction under microwave heating
Nooshabadi, Masoud,Aghapoor, Kioumars,Darabi, Hossein Reza,Mojtahedi, Mohammad Majid
, p. 7549 - 7552 (1999)
The Willgerodt-Kindler reaction of several aryl alkyl ketones with sulfur and morpholine under solvent-free conditions was performed in a domestic microwave oven. Good yields were attained within a very short reaction time (between 3.5-6 min.).
Sulfated tungstate: A green catalyst for synthesis of thiomorpholides via Willgerodt-Kindler reaction
Salim, Suresh D.,Pathare, Sagar P.,Akamanchi, Krishnacharya G.
, p. 78 - 81 (2011)
Use of sulfated tungstate as an efficient, green and reusable catalyst for preparation of thiomorpholides via Willgerodt-Kindler reaction pathway is presented. The reaction proceeds under solvent free condition. The advantages of this method are high yiel
Rapid and efficient protocol for Willgerodt–Kindler’s thioacetamides catalyzed by sulfated polyborate
Rekunge, Deelip S.,Khatri, Chetan K.,Chaturbhuj, Ganesh U.
, p. 2091 - 2095 (2017/10/06)
Abstract: A simple and efficient method for the synthesis of one-pot, three-component thioacetamides via Willgerodt–Kindler reaction was developed using a sulfated polyborate catalyst. The method described the reaction of ketones, sulfur, and secondary am
Selective reduction of carbonyl groups in the presence of low-valent titanium reagents
Lin, Wei,Hu, Ming-Hua,Feng, Xian,Fu, Lei,Cao, Cheng-Pao,Huang, Zhi-Bin,Shi, Da-Qing
, p. 2238 - 2242 (2014/04/17)
The chemoselective reduction of several structurally diverse compounds containing carbonyl groups was achieved in the presence of low-valent titanium reagents. This novel synthetic method provides easy access to highly selective reduction of carbonyl groups, and possesses several advantages including one-step procedure, convenient manipulation, good to excellent yields, and short reaction times.