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NMR spectra were recorded in CD3OD on a Bruker DRX-400 instrument at 295K. Chemical shifts are given in ppm (?) and were referenced to the solvent signals at 3.31 and 49.5 ppm for 1H and 13C NMR, respectively. ÎÒÏëÇë½ÌÉÏÎÄÖÐ295K´ú±íʲô°¡£¿Ò»°ã×öºË´Å²»Ó¦¸ÃÊǶàÉÙÕ×Âð£¿3.31 and 49.5 ppm×÷Ϊ1H and 13CµÄÎ»ÒÆÖµ£¬Êdz£ÊýÂ𣿲»Í¬µÄƵÂʵÄÎ»ÒÆÊDz»ÊÇÓ¦¸ÃÓвîÒ죿 лл |
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