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One is the Felkin-Ahn model, which emphasizes stabilization of the developing negative charge in the forming bond by interaction with the ∗ orbital of the substituent. The Cieplak model263 emphasizes an alternative interaction in which the orbital of the C−X bond acts as a donor to the developing antibonding orbital.264 |
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Chempricess: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-09-28 14:44:36
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Chempricess: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-09-28 14:44:36
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One is the Felkin-Ahn model, which emphasizes stabilization of the developing negative charge in the forming bond by interaction with the ∗ orbital of the substituent. The Cieplak model263 emphasizes an alternative interaction in which the orbital of the C−X bond acts as a donor to the developing antibonding orbital.264 Ò»¸öÊÇ Felkin-Ahn Ä£ÐÍ, ËüÇ¿µ÷µÄÊÇÔÚËùÐγɵļüÖУ¬Í¨¹ýºÍÈ¡´ú»ùµÄ∗¹ìµÀµÄÏ໥×÷ÓÃËù²úÉúµÄ¸ºµçºÉµÄÎȶ¨ÐÔ¡£ Cieplak Ä£ÐÍl263£¬ËüÇ¿µ÷µÄÊÇÁíÒ»ÖÖÏ໥×÷Ó㬠ÔÚÕâÖÖ×÷ÓÃÖУ¬C−X¼üµÄ¹ìµÀÊÇËùÐγɵķ´¼ü¹ìµÀ264µÄ£¨µç×Ó£©¹©Ìå¡£ |
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