63329-72-6Relevant articles and documents
Access to Spirocyclic Benzothiophenones with Multiple Stereocenters via an Organocatalytic Cascade Reaction
Formánek, Bed?ich,Tauchman, Ji?í,Císa?ová, Ivana,Vesely, Jan
, p. 8510 - 8521 (2020/07/16)
The present report describes an organocatalytic cascade reaction between 2-alkylidene benzo[b]thiophenone derivatives and enones in the presence of the Cinchona alkaloid amine. Spirobenzothiophenonic cyclohexane derivatives containing three stereocenters were prepared via one-step synthesis in yields ranging from 88 to 96% and in enantioselectivities (enantiomeric excess (ee)) ranging from 85 to 97%, with diastereoselectivities of approximately 14/2/1. Therefore, this method provides an efficient route for the synthesis of a new class of optically active 2-spirobenzothiophenones.
METHOD FOR SYNTHESIZING THIOAURONES
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, (2021/02/12)
An embodiment of the present invention is a process for producing 2 - benzoic acid compound by reacting a thiosalicylic acid with a strongly basic substance and a benzylhalide. The 2 - methoxy - N N-methyl -2 - benzamides, which are reacted with N - methoxy - N N-methylcarbamoyl chloride to produce N - methoxy-N-methylbenzamides. The N - methoxy - N N-methyl -2 - (benzocyclohexyl) benzamide is treated with arylethynyl salt to prepare 1 - (2- benzocyclohexyl) phenyl -3 - phenyl -2 - profin -1 . The 1 - (2-) phenyl -3 - phenyl -2 - profin -1 - one is treated with an acid material. Provided is a method for preparing a thiouronone compound.
Cooperative Activating Effect of Tertiary Amine/DMSO on Elemental Sulfur: Direct Access to Thioaurones from 2′-Nitrochalcones under Mild Conditions
Nguyen, Thanh Binh,Retailleau, Pascal
supporting information, p. 186 - 189 (2018/01/17)
A new mode for the activation of elemental sulfur is reported. In the presence of both DMSO and a tertiary aliphatic amine (triethylamine or N-methylpiperidine), this element reacts directly with a wide range of 2′-nitrochalcones 1 to provide the corresponding thioaurones 2 in high yields even at room temperature and in the absence of transition metal catalyst.