860223-92-3Relevant articles and documents
Synthesis of symmetrical and unsymmetrical tellurides via silver catalysis
Goldani, Bruna,do Sacramento, Manoela,Lenard?o, Eder J.,Schumacher, Ricardo F.,Barcellos, Thiago,Alves, Diego
supporting information, p. 15603 - 15609 (2018/10/04)
We describe here a simple and efficient methodology for the cross-coupling reaction of diaryl ditellurides with aryl boronic acids catalyzed by AgNO3. The general applicability and wide substrate scope make this an interesting method for the synthesis of a series of symmetrical and unsymmetrical diaryl tellurides. This silver-catalyzed protocol tolerates a variety of diaryl ditellurides as well as aryl boronic acids by using only 10 mol% of AgNO3 to provide the desired products in high yields. The reaction mechanism was proposed after high resolution mass spectrometry analysis and the active (PhTe)2AgIII intermediate could be detected.
Synthesis of unsymmetrical diorganyl chalcogenides under greener conditions: Use of an iodine/DMSO system, solvent- and metal-free approach
Saba, Sumbal,Rafique, Jamal,Braga, Antonio L.
supporting information, p. 1446 - 1452 (2015/05/27)
Herein, we report a greener iodine-catalyzed protocol to access different types of unsymmetrical diorganyl chalcogenides. This new approach works in the absence of solvent and metal. The desired products were obtained in good to excellent yields using one equivalent of arylboronic acids, half an equivalent of various diorganyl dichalcogenides, iodine (10 mol%) as a catalyst and 2 equivalents of dimethyl sulfoxide (DMSO; as oxidant), with a reaction time of 10 min under microwave irradiation.
Ultrasound-assisted, transition-metal-free synthesis of diaryl tellurides from aryl boronic acids: A possible free-radical mechanism
Mohan, Balaji,Hwang, Sori,Jang, Seongwan,Park, Kang Hyun
, p. 2078 - 2082 (2014/10/15)
The first rapid, catalyst-free synthesis of diphenyl tellurides from readily available diphenyl ditelluride and aryl boronic acids is reported. The high efficiency, general applicability and wide substrate scope, including heterocycles and other functional groups, make this method superior. The technique, which utilizes dimethyl sulfoxide solvent and ultrasound promotion, opens the door for the synthesis of diphenyl tellurides at 100 °C in air within a short time in high yields. Georg Thieme Verlag Stuttgart New York.
