Znn3bq.jpeg
²é¿´: 1005  |  »Ø¸´: 2
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

yhxing

½ð³æ (СÓÐÃûÆø)


[½»Á÷] ÇóÖú·­ÒëÒ»¶ÎÓ¢ÎÄÎÄÏ×

Carboxyl transfer reactions occur in the nature catalyzed by carboxyl transferases. In the synthetic laboratory, a carboxyl transfer is realizable with assistance of some catalysts.One of the known synthetic methods for carboxyl transfer is Henkel
reaction, or sometimes known as Raecke process, involving thermal rearrangement or disproportionation of aromatic carboxylates to more symmetrical aromatic dicarboxylates,carried out in an inert atmosphere between 350 ¡æ and 500 ¡æ in the presence of catalytic quantities of cadmium or zinc salts

» ²ÂÄãϲ»¶

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
ôÈ»ù×ªÒÆ·´Ó¦ÔÚ×ÔÈ»½çÖÐÊÇÓÉôÈ»ù×ªÒÆ´ß»¯¼Á´ß»¯·¢ÉúµÄ¡£ÔںϳÉʵÑéÊÒÀôÈ»ù×ªÒÆ·´Ó¦ÊÇÔÚ¶àÖÖ´ß»¯¼ÁµÄЭÖúÏ·¢ÉúµÄ¡£ÒÑÖªµÄÒ»ÖÖôÈ»ù×ªÒÆºÏ³É·½·¨ÊÇHenkel·´Ó¦£¬»òÕßÓÐʱ±»³ÆÎªRaeche¹ý³Ì£¬°üÀ¨Èȵ÷Õû»òÕß·¼ÏãôÈ»¯ÎïÆç»¯Éú³É¸ü¼Ó¶Ô³ÆµÄ·¼Ïã·ÇôÈ»¯ÎÔÚ¶èÐÔÆøÌå±£»¤£¬350¡æ~500¡æ£¬ïÓÑλòÕßпÑεĴ߻¯Ï·¢Éú·´Ó¦¡£
2Â¥2010-11-10 11:09:00
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
yhxing(½ð±Ò+5, ·­ÒëEPI+1): 2010-11-11 12:15:59
ÔÚ×ÔÈ»½çÖеÄôÈ»ù×ªÒÆ·´Ó¦ÊôÓÚ×ªÒÆÃ¸´ß»¯¹ý³Ì¡£ÔںϳÉʵÑéÊÒÀôÈ»ù×ªÒÆ·´Ó¦ÊÇÔÚ¶àÖÖ´ß»¯¼ÁµÄЭÖúÏ·¢ÉúµÄ¡£Henkel·´Ó¦ÊÇÒ»ÖÖÒÑÖªµÄôÈ»ù×ªÒÆºÏ³É·½·¨£¬ÓÐʱҲ±»³ÆÎªRaeche¹ý³Ì£¬ÔÚ¶èÐÔÆøÌå±£»¤£¬350¡æ~500¡æ£¬ïÓÑλòÕßпÑδ߻¯¼Á´æÔÚµÄÌõ¼þÏ£¬·¢ÉúµÄ·¼ÏãôÈ»¯ÎïÈÈÖØÅÅ»òÕßÆç»¯Éú³É¸ß¶Ô³ÆµÄ¶þÔª·¼ÏãôÈ»¯ÎïµÄ·´Ó¦¶¼ÊôÓڸùý³Ì¡£
3Â¥2010-11-11 11:50:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ yhxing µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 292Çóµ÷¼Á +7 ЦЦԬ 2026-04-09 7/350 2026-04-09 15:22 by ̽123
[¿¼ÑÐ] ²ÄÁÏ¿¼ÑÐÇóµ÷¼Á×Ü·Ö280 +30 mkjlz1 2026-04-06 35/1750 2026-04-08 21:25 by cyh¡ª315
[¿¼ÑÐ] Ò»Ö¾Ô¸¼ª´ó»¯Ñ§327Çóµ÷¼Á +12 ÍõÍõ°×ʯ 2026-04-06 13/650 2026-04-08 16:05 by luoyongfeng
[¿¼ÑÐ] 287Çóµ÷¼Á +6 Fnhc 2026-04-07 6/300 2026-04-08 10:05 by xingguangj
[¿¼²©] É격 +8 IQwQl 2026-04-04 8/400 2026-04-08 09:43 by 0608104024
[¿¼ÑÐ] 313Çóµ÷¼Á +3 Ê®Áùʰ½ 2026-04-07 3/150 2026-04-07 23:20 by lbsjt
[¿¼ÑÐ] ũѧ£¬Çóµ÷¼Á£¬314·Ö +4 ·Ã¿Í¼Ç¼¿É°® 2026-04-04 4/200 2026-04-07 21:07 by µÈ°¶
[¿¼ÑÐ] ÉúÎïѧ363µ÷¼ÁÇóÖú +7 fanzhang6666 2026-04-06 9/450 2026-04-07 17:37 by lijunpoly
[¿¼ÑÐ] 277¹¤¿ÆÇóµ÷¼Á +10 1915668 2026-04-04 11/550 2026-04-06 23:53 by ÐÄæÂÒâ±±
[¿¼ÑÐ] 081200-11408-276ѧ˶Çóµ÷¼Á +5 ´Þwj 2026-04-05 5/250 2026-04-06 15:40 by lin-da
[¿¼ÑÐ] 346·ÖµÄÉúÎïÓëÒ½Ò©08600Çóµ÷¼Á +6 ³£ÓêÑôÉϰ¶ 2026-04-05 7/350 2026-04-06 12:36 by lys0704
[¿¼ÑÐ] 0855Çóµ÷¼Á²ÄÁÏ +11 ºìÌÒׯׯ 2026-04-04 12/600 2026-04-06 10:26 by À¶ÔÆË¼Óê
[¿¼ÑÐ] ÉúÎïÓëÒ½Ò©086000µ÷¼ÁÒ»Ö¾Ô¸Î÷±±Å©ÁÖ320·Ö +3 ÃÀÃÀŮʿ 2026-04-03 3/150 2026-04-05 21:55 by ѧԱ8dgXkO
[¿¼ÑÐ] µ÷¼ÁÇóÖú +10 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-02 13/650 2026-04-05 09:41 by sam3303
[¿¼ÑÐ] 333Çóµ÷¼Á +12 wfh030413@ 2026-04-03 13/650 2026-04-04 21:02 by jj987
[¿¼ÑÐ] 368Çóµ÷¼Á +5 ½ñ»ªÏ° 2026-04-03 7/350 2026-04-04 18:47 by imissbao
[¿¼ÑÐ] 268Çóµ÷¼Á +8 ÄãºÃtg 2026-04-03 9/450 2026-04-04 05:08 by gswylq
[¿¼ÑÐ] Çóµ÷¼Á +4 ѹÁ¦??´ó 2026-04-03 4/200 2026-04-03 21:36 by à£à£à£0119
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©½»Í¨´óѧ²ÄÁϹ¤³Ì×Ü·Ö358 +4 cs0106 2026-04-03 4/200 2026-04-03 13:41 by °ÙÁéͯ888
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +4 Ò»ÑùYWY 2026-04-03 4/200 2026-04-03 09:48 by À¶ÔÆË¼Óê
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û