Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 757  |  »Ø¸´: 3
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

fxljzy

Òø³æ (СÓÐÃûÆø)

[ÇóÖú] Âé·³ÄÄλ´óÏɰïæ·­ÒëһϠ£¨Óлú°·´ß»¯£©

ÖÐÎÄ£ºÓÉÓÚÓ÷ÇÊÖÐԵİ·´ß»¯¼ÁÎÞ·¨µÃµ½»¯ºÏÎï1a,1bµÄÏûÐýÌ壬ËùÒÔÕâЩ»¯ºÏÎïµÄÏûÐýÌåÊÇÓɹ¹ÐÍÏà·´µÄ´ß»¯¼ÁµÃµ½ÏàÓ¦µÄÊÖÐÔ»¯ºÏÎͨ¹ýÅäÎéµÃµ½µÄ£¬ËùÒÔ¶ÔÓ¦Òì¹¹ÌåµÄ±ÈÀýÄÑÒÔ´ïµ½1£º1.

´ó¿¬¾ÍÊÇÕâô¸öÒâ˼£¬·³Çë¸÷λʦÐÖʦ½ã°ïæ·­Òëһϡ£

ллÁË¡£

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

luxiaoying

ľ³æ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
phu_grassman: ½ð±Ò+1, thanks 2012-11-02 21:13:52
fxljzy: ½ð±Ò+15 2012-11-02 23:22:32
Because using achiral amine catalyst can 't get compound 1 a and 1 b of racemic form, so these compounds of racemic form is by configuration opposite catalyst get corresponding chiral compounds, through the compatibility get, so it is difficult to achieve corresponding isomer proportion of 1:1.
×·Çó׿Խ£¬³É¹¦¾Í»á×·ËæÄ㣡
3Â¥2012-11-01 18:29:00
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð

һدһ»®

½ð³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
Carena: ½ð±Ò+1, ¸ÐлӦÖú 2012-11-01 14:58:05
fxljzy: ½ð±Ò+15, ·­ÒëEPI+1 2012-11-02 23:22:25
As the racemic of the 1a and 1b  compounds  couldn`t be  obtained  by using  the non-chiral amide catalyst, the racemic of the those compounds   was synthesised  by the coordinated  reaction of the  related chiral compounds and the catalytic effect of the reversed structure compounds , so the equivalent of the enantimoer couldn`t reach 1:1 .
2Â¥2012-11-01 14:06:29
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fxljzy

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by һدһ»® at 2012-11-01 14:06:29
As the racemic of the 1a and 1b  compounds  couldn`t be  obtained  by using  the non-chiral amide catalyst, the racemic of the those compounds   was synthesised  by the coordinated  reaction of the   ...

4Â¥2012-11-02 23:22:16
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤329·ÖÇóµ÷¼Á +19 Ò¶zilin 2026-04-13 20/1000 2026-04-14 00:23 by ¸£Å©×Ê»·_»·¾³»ù
[¿¼ÑÐ] »¯Ñ§070300 Çóµ÷¼Á +21 ¹þ¹þ¹þ^_^ 2026-04-12 21/1050 2026-04-13 21:36 by nxybio2007
[¿¼ÑÐ] 300·ÖÇóµ÷¼Á £¨085501»úеר˶£¬±¾¿ÆÑï´ó£© +8 xu@841019 2026-04-11 9/450 2026-04-13 21:36 by xu@841019
[¿¼ÑÐ] 22408 352·ÖÇóµ÷¼Á +5 ŬÁ¦µÄÏÄÄ© 2026-04-09 5/250 2026-04-12 19:17 by wj165256
[¿¼ÑÐ] ÉúÎïѧ308Çóµ÷¼Á +5 ÏàÐűػá¹ââÍòÕ 2026-04-11 5/250 2026-04-12 18:14 by zhouxiaoyu
[¿¼ÑÐ] 296Çóµ÷¼Á +8 Íô£¡£¿£¡ 2026-04-09 8/400 2026-04-11 21:02 by ÄæË®³Ë·ç
[¿¼ÑÐ] µ÷¼Á +6 ÇàµÆ²»¸º 2026-04-09 6/300 2026-04-11 20:35 by dongdian1
[¿¼ÑÐ] 11408¡£358Çóµ÷¼Á +3 TMYzds 2026-04-07 3/150 2026-04-11 17:10 by µªÆøÆøÆø
[¿¼ÑÐ] 085501»úеר˶ 302·Ö ²»ÌôרҵÇóµ÷¼Á +7 Íôij. 2026-04-09 7/350 2026-04-11 14:37 by luhong1990
[¿¼ÑÐ] 085410 273·Öµ÷¼Á +4 X1999 2026-04-09 4/200 2026-04-11 13:05 by pies112
[¿¼ÑÐ] 298Çóµ÷¼Á +5 ²ÐºÉÐÂÁø 2026-04-07 5/250 2026-04-11 11:02 by ×ÏêØ×ÏÆå
[¿¼ÑÐ] 0858Çóµ÷¼Á 5+5 Gky09300550£¬ 2026-04-10 8/400 2026-04-10 19:13 by chemisry
[¿¼ÑÐ] 298Çóµ÷¼Á +13 ¶¤¶£ß˶¬¹Ï 2026-04-09 13/650 2026-04-10 15:49 by jiajinhpu
[ÂÛÎÄͶ¸å] ÇóÖúÎÄÏ×Ô­ÎÄ 10+3 18500821399 2026-04-08 3/150 2026-04-09 16:56 by ±±¾©À³ÒðÈóÉ«
[¿¼ÑÐ] 085400µç×ÓÐÅÏ¢Àࣨ´¨´ó¿ØÖƹ¤³Ì£©Çóµ÷¼Á¿É¿çרҵ ÇóÀÏʦÁªÏµ +3 626776879 2026-04-08 3/150 2026-04-09 16:05 by Öí»á·É
[¿¼ÑÐ] 349ѧ¿Æ»¯Ñ§045106Çóµ÷¼Á£¬»¯Ñ§Àà¶¼¿ÉÒÔ +8 ±£ºÃ¶®¶® 2026-04-08 8/400 2026-04-09 14:03 by xulei3024
[¿¼ÑÐ] 086000ÉúÎïÓëÒ½Ò©µ÷¼Á +7 awwwwwooooo 2026-04-09 7/350 2026-04-09 13:31 by ±±¼«159263
[¿¼ÑÐ] ²ÄÁϹ¤³Ì322 +18 ¹þ¹þ¹þºðºðºð¹þ 2026-04-07 19/950 2026-04-09 10:44 by cymywx
[¿¼ÑÐ] 286Çóµ÷¼Á +19 Faune 2026-04-08 20/1000 2026-04-09 08:36 by ŶŶ123
[¿¼ÑÐ] 085404£¬334·Ö£¬Çóµ÷¼Á +5 sunjie8888 2026-04-08 8/400 2026-04-09 07:26 by sunjie8888
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û