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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
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luxiaoying

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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.
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3Â¥2012-11-01 18:29:00
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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
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