Convenient synthesis of 1-thiohydroxypyrene by Newman-Kwart rearrangement
Ran Zhang , Lihua Xu , Hui Chen , Zhihong Qin , Yu Zhao , Zhonghai Ni
Chemical Research in Chinese Universities ›› 2015, Vol. 31 ›› Issue (2) : 224 -227.
Convenient synthesis of 1-thiohydroxypyrene by Newman-Kwart rearrangement
1-Thiohydroxypyrene(1) and its two intermediates, 1-pyrenyl-O-thiocarbamate(2) and 1-pyrenyl-S-thiocarbamate(3), were synthesized using 1-hydroxypyrene as the starting material. The key synthetic step is Newman-Kwart rearrangement. The results indicate that the Newman-Kwart rearrangement is more effective in suitable solvent than conventional method based on pure organic compound. The structures of compounds 1–3 were characterized by FTIR, NMR, GC-MS and elementary analysis. The crystal structures of two new compounds(2 and 3) were determined by single crystal X-ray diffraction analysis. The whole synthetic process is simple, mild and with high yield.
Newman-Kwart rearrangement / 1-Thiohydroxypyrene / Crystal structure
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