88369-09-9Relevant academic research and scientific papers
Synthesis of 4-sulfanylcoumarins using thiourea and alkyl halides as the sulfanylation agent in polyethylene glycol-water
Yin, Zhenlan,Wang, Yu,Yang, Qin,Wang, Ying,Xu, Jingshi,Deng, Zhihong,Peng, Yiyuan
, p. 759 - 766 (2013/04/10)
A novel and efficient route for the synthesis of 4-sulfanylcoumarins is disclosed. The direct sulfanylation of 4-tosyloxycoumarins with thiourea and various alkyl halides in polyethylene glycol 200-water (PEG 200-H2O), at room temperature under an air atmosphere, affords the corresponding 4-sulfanylcoumarins in moderate to excellent yields. This transformation shows good substrate scope and takes place in a green solvent. Georg Thieme Verlag Stuttgart · New York.
Direct sulfanylation of 4-hydroxycoumarins with thiols in water
Peng, Yi-Yuan,Wen, Yanfang,Mao, Xuechun,Qiu, Guanyinsheng
experimental part, p. 2405 - 2406 (2009/07/26)
The direct sulfanylation of 4-hydroxycoumarins with thiols via C-OH bond activation in water under mild conditions is described, which afforded the corresponding 4-sulfanylcoumarins in good yields.
4-Thio coumarins
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Page/Page column 20, (2010/02/05)
4-thio substituted coumarin derivatives and coumarin dimers are provided, as well as processes for their preparation. A synthetic process for the preparation of 4-thio substituted coumarin derivatives is provided using mild reaction conditions, which main
HETEROCYCLIC BIOANTIOXIDANTS. 3. EFFECT OF A SUBSTITUENT ON THE RESULT OF THE REDUCTION OF 3-NITRO-4-HETERO-SUBSTITUTED COUMARINS WITH SODIUM HYDROSULFITE
Parfenov, E. A.,Smirnov, L. D.
, p. 274 - 278 (2007/10/02)
The effect of a heterosubstituent on the result of the reduction of 3-nitro-4-substituted coumarins with sodium hydrosulfite, which generally leads to a mixture of three compounds, viz., the product of the reduction of the nitro group to an amino group an
