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| As a result, common reagents for reduction of an ester to an alcohol such as LiAlH4, i-Bu2AlH, LiBH4, Superhydride, and NaBH4 in combination with various alcohols led to a large amount of over-reduction and C-4 epimerization. |
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fjtony163: ·ÒëEPI+1, ´ú·¢ 2020-02-19 00:34:47
zypzyb(fjtony163´ú·¢): ½ð±Ò+15, ´ú·¢ 2020-02-19 00:34:40
fjtony163: ·ÒëEPI+1, ´ú·¢ 2020-02-19 00:34:47
| Òò´Ë£¬³£¼ûµÄ½«õ¥»¹Ô³É´¼µÄ»¹Ô¼Á£¬ ÈçLiAlH4¡¢i-Bu2AlH¡¢LiBH4¡¢³¬Ç⻯ºÏÎï ºÍNaBH4£¬Ôں͸÷Àà´¼»ìºÏºó£¬»áµ¼Ö´óÁ¿µÄ¹ýÑõ»¯·´·´Ó¦ºÍC-4²îÏòÒì¹¹»¯¡£ |
2Â¥2020-01-28 18:38:49
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·Ò룺¿ÉÒÔ½«õ¥»¹ÔΪ´¼µÄͨÓÃÊÔ¼ÁÓÐLiAlH4, i-Bu2AlH, LiBH4, ÈýÒÒ»ùÇ⻯Åðﮣ¨Ó¦ÎªSuper Hydride¶ø²»ÊÇÆ´ÔÚÒ»Æð£©ÒÔ¼°NaBH4µÈ£¬½«Ð©ÊÔ¼ÁÓ벻ͬ´¼½áºÏ£¬»áµ¼ÖÂÐγɴóÁ¿µÄÈçÊÖÐÔ̼Òì¹¹ÌåµÈ¹ý¶È»¹ÔµÄ²úÎï¡£ ËùνÊÖÐÔ̼Òì¹¹Ì壬ÊÇÖ¸»¹Ô¼Á½«õ¥»ùÍÅ»¹ÔΪ-OHºó£¬¼ÌÐø½«Ì¼ÉÏ»ùÍÅ»¹ÔΪH»ò¼ÓH£¬µÃµ½µÄÒì¹¹Ìå¡£¾ßÌåÊÇʲô£¬Ðè½áºÏÉÏÏÂÎÄ¡£ |

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