200055-89-6Relevant articles and documents
Enantioselective allene/enone photocycloadditions: The use of an inexpensive optically active 1,3-disubstituted allene
Shepard, Mary S.,Carreira, Erick M.
, p. 16253 - 16276 (1997)
We report the preparation and use of an inexpensive readily prepared optically active 1,3-disubstituted allene that may be utilized for enantioselective intramolecular allene/enone photocycloadditions. In addition, we describe novel substrates for intramo
Highly selective and sensitive coumarin–triazole-based fluorometric ‘turn-off’ sensor for detection of Pb2+ ions
Shaily,Kumar, Ajay,Parveen, Iram,Ahmed, Naseem
, p. 713 - 721 (2018)
Exposure to even very low concentrations of Pb2+ is known to cause cardiovascular, neurological, developmental, and reproductive disorders, and affects children in particular more severely. Consequently, much effort has been dedicated to the de
Transition metal- and oxidant-free sulfonylation of 1-sulfonyl-1H-1,2,3-triazoles to enols for the synthesis of sulfonate derivatives
He, Xinwei,Wu, Yuhao,Zuo, Youpeng,Xie, Mengqing,Li, Ruxue,Shang, Yongjia
supporting information, p. 959 - 972 (2019/03/14)
A novel and convenient protocol for the synthesis of sulfonate derivatives via DABCO-catalyzed direct sulfonylation of 1-sulfonyl-1,2,3-triazoles to different enols has been established. This synthetic route could effectively avoid the use of transition m
Palladium-Catalyzed Synthesis of Benzothiophenes via Cross-Dehydrogenative Coupling of 4-Arylthiocoumarins and Pyrones
Zhang, Jin,Zhuang, Yuyu,Ma, Yangmin,Yang, Xiufang,Szostak, Michal
supporting information, p. 5709 - 5714 (2019/11/21)
Benzothiophenes represent a pivotal class of sulfur heterocycles and their synthesis has attracted significant attention to generate bioactive scaffolds. Herein, we report a convergent, atom- and step-economic method for the synthesis benzothiophenes by cross-dehydrogenative coupling (CDC) of 4-arylthiocoumarins in good to excellent yields. We further demonstrate cross-dehydrogenative coupling of 4-arylthio-2-pyrones to afford alternative substitution of benzothiophenes. The presence of a labile ester carbonyl moiety provides functional handle for further functionalization by coumarin deconstruction. Most crucially, the manuscript demonstrates that the use of readily accessible templated synthesis has a significant potential for the rapid assembly of sulfur heterocycles by dehydrogenative coupling mechanism.