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Stefano    20-01-20 00:17
(1) Aldehyde (R-CHO)´Â AlcholÀÌ »êÈ­µÇ¾î »ý¼ºµÈ ¹°ÁúÀÔ´Ï´Ù.  ÀÌ Aldehyde°¡ ´õ »êÈ­µÇ¸é Acid (R-COOH)°¡ µË´Ï´Ù.   

C2H5-OH +  1/2 O2 --------------> CH3-CH=O  +  H2O  ....................(1)  ¾Æ¼¼Æ®¾Ëµ¥È÷µå »ý¼º ¹ÝÀÀ (¿¡Ä¥¾ËÄÝÀÇ »êÈ­¹ÝÀÀ)
CH3-CH=O    +  1/2O2 ----------> CH3-COOH  ..................................(2) ¾Æ¼¼Æ®¾Ëµ¥È÷µåÀÇ »êÈ­¿¡ ÀÇÇÑ ÃÊ»ê »ý¼º¹ÝÀÀ

(2) Áú¹®¿¡¼­ ¾ð±ÞÇÏ´Â ÃàÇÕ¹ÝÀÀÀº µÎ ´Ü°è·Î ÁøÇàµÇ´Âµ¥  (°¡) ù´Ü°è¿¡¼­´Â µÎºÐÀÚÀÇ ¾Ëµ¥È÷µå°¡ ÀÚµ¿ »êÈ­-ȯ¿ø¹ÝÀÀ¿¡ ÀÇÇØ ÃÊ»ê°ú ¿¡Ä¥¾ËÄÝÀÌ »ý¼ºµÇ´Â ¹ÝÀÀ(¾Æ·¡ÀÇ ¹ÝÀÀ(3))ÀÌ°í (³ª)µÎ¹ø° ´Ü°è¿¡¼­´Â NaOHÀÇ Ã˸ÅÀÛ¿ë¿¡ ÀÇÇØ ÃÊ»ê°ú ¾ËÄÚȦÀÌ ¹ÝÀÀÇÏ¿© ¿¡Ä¥Çϼ¼Å×ÀÌÆ®°¡ »ý¼ºµÇ´Â ¹ÝÀÀ(¾Æ·¡ÀÇ ¹ÝÀÀ(4))ÀÔ´Ï´Ù.  ù¹ÝÀÀÀº ÀÚµ¿»êȭȯ¿ø¹ÝÀÀÀÌ°í µÎ¹ø° ¹ÝÀÀÀº ¿¡½ºÅÚÈ­ ¹ÝÀÀ¿¡ ÇØ´çÇÏÁö¿ä.

CH3-CH=O +  1/2 O2  ------------>CH3-COOH  ................................(2)  ¾Ëµ¥È÷µåÀÇ »êÈ­¹ÝÀÀ
CH3-CH=O +  H2O ---------------->C2H5-OH + 1/2O2........................(1a) ¾ËÄÚȦ »êÈ­¹ÝÀÀÀÇ ¿ª¹ÝÀÀ(¾Ëµ¥À̵åÀÇ È¯¿ø¹ÝÀÀ)
--------------------------------------------------------------------------------------------------------------------------------------------------
2CH3-CH=O  + H2O --------------->CH3-COOH  +  C2H5-OH ......(3) À§ÀÇ ¹ÝÀÀ(2)¿Í (1a)¹ÝÀÀÀ» ÇÕÇÑ ¹ÝÀÀ (ÀÚµ¿ »êÈ­-ȯ¿ø¹ÝÀÀ)

À§ÀÇ ¹ÝÀÀ(3)°ú°°ÀÌ °°Àº ¾Ëµ¥À̵尡 ÇѺÐÀÚ´Â »êÈ­µÇ°í ÇѺÐÀڴ ȯ¿øµÇ´Â ù´Ü°è ¹ÝÀÀÀ» ¹ÝÀÀÀ» ÀÚµ¿ »êÈ­-ȯ¿ø¹ÝÀÀÀ̶ó°í Çϴµ¥ »ý¼ºµÈ »ê°ú ¾ËÄÝÀÌ ¾Æ·¡ÀÇ µÎ¹ø° ´Ü°è ¹ÝÀÀ¿¡ ÀÇÇØ ¿¡½ºÅÍ°¡ »ý¼ºµË´Ï´Ù.  ÀÌ µÎ¹ø° ¹ÝÀÀÀº Alkali (¿©±â¼­´Â NaOH)ÀÇ Ã˸ÅÀÛ¿ë¿¡ ÀÇÇØ ÀϾ´Ï´Ù.

CH3-COOH  +  C2H5-OH  ----->CH3CO-O-C2H5  + H2O....................(4) À¯±â»ê°ú ¾ËÄÚȦÀÌ ¹ÝÀÀÇÏ´Â "¿¡½ºÅÚÈ­ ¹ÝÀÀ" (¿¡Ä¥¾Æ¼¼Å×ÀÌÆ® »ý¼º¹ÝÀÀ)

(3) À§ÀÇ ¹ÝÀÀ½Ä (3)½Ä°ú (4)½ÄÀ» ´õÇÏ¸é ½Ã½ºÅÛ ³»¿¡¼­´Â ÀüüÀûÀ¸·Î ´ÙÀ½ÀÇ ¹ÝÀÀÀÌ ÀϾ´Â ¼ÀÀÔ´Ï´Ù.

2CH3-CH=O ----(NaOH Ã˸ÅÀÛ¿ë)------>CH3CO-O-C2H5  ..................(5)  ¿¡¼¼Æ®¾Ëµ¥È÷µå°¡ ¾ËÄ«¸® Ã˸ÅÇÏ¿¡¼­ ¿¡½ºÅÚÈ­ µÇ´Â ¹ÝÀÀ (¿¡Ä¥¾Æ¼¼Å×ÀÌÆ® »ý¼º)

AldehydeÀÇ µÎ ºÐÀÚÁß ÇѺÐÀÚ°¡ »êÈ­µÇ¾î »ý¼ºµÇ´Â À¯±â»ê°ú ȯ¿øµÇ¾î »ý¼ºµÇ´Â ¾ËÄÚȦÀÌ ¾ËÄ«¸® Ã˸ÅÇÏ¿¡¼­ ¿¡½ºÅÚÈ­ µÇ´Â ¹ÝÀÀÀ» <Aldol Condensation> ȤÀº <Ä­´ÏÂ¥·Î ¹ÝÀÀ>À̶ó°í ÇÕ´Ï´Ù. 

(4) ÃàÇÕ¹ÝÀÀ¸ÞÄ«´ÏÁò

¾Ëµ¥È÷µåÀÇ R-CHO ºÐÀÚ´Â ¾Ëµ¥È÷µå±âÀÇ »ê¼Ò°¡ ÀüÀÚ¸¦ ²ø¾î°¨À¸·Î½á »ê¼ÒÀ§Ä¡¿¡ -Dipole, ź¼ÒÀ§Ä¡¿¡ +DipoleÀ» Çü¼ºÇÏ°í Àִµ¥,  Ã˸ŷΠ»ç¿ëµÇ´Â OH- ÀÌ¿ÂÀÌ  AldehydeÀÇ +Dipole ¿ªÇÒÀ» Çϴ  >C=O ±×·ìÀÇ Åº¼Ò¸¦ 1Â÷ °ø°ÝÇÏÇÏ¿© ¹ÝÀÀÀÌ °³½ÃµË´Ï´Ù.

»ó¼¼ÇÑ ¹ÝÀÀ¸ÞÄ«´ÏÁòÀº <Aldol Condensation> ȤÀº <Ä­´ÏÂ¥·Î¹ÝÀÀ>À» ã¾Æ º¸µµ·Ï Çϼ¼¿ä.

https://www.google.com/search?q=self+aldol+condensation+of+acetaldehyde&source=lmns&bih=888&biw=1920&hl=ko&ved=2ahUKEwiIgaPm-o_nAhUG7JQKHVjeDP4Q_AUoAHoECAEQAA

https://en.wikipedia.org/wiki/Cannizzaro_reaction
¹ÙÄ«½º phj0612   20-01-20 09:45
¾Ëµ¹ ÃàÇÕ ¹ÝÀÀ¿¡ À̸£±â Àü±îÁöÀÇ °úÁ¤À» ¼³¸íÇØ Áּż­ ÀÌÇØÇÏ´Â µ¥ ¸¹Àº µµ¿òÀÌ µÇ¾ú½À´Ï´Ù.
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