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[ Last edited by lxqchain on 2011-6-30 at 12:40 ]
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lxqchain

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Originally posted by James-CG at 2011-06-30 13:58:45:
First,  Formation of  -C-C-C-O-B-,  cis- (B and COBn), cyclic ring
Then Oxidation to remove B to form trans-  structure

ÔÙÎÊһϣ¬Ä¿Ç°ÓÐÀàËÆµÄÊÖÐÔÊÔ¼Á¿ÉÒÔÓÃÓÚÕâÀà·´Ó¦Âð
4Â¥2011-06-30 14:04:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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James-CG

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lxqchain(½ð±Ò+20): 1 2011-06-30 14:03:21
jiangchunyong(½ð±Ò+1): лл 2011-06-30 14:30:12
First, Formation of C-C-C-O-B, cis-  ring
Then  Oxidation to remove B to form trans-  structure
2Â¥2011-06-30 13:56:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

James-CG

ľ³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

First,  Formation of  -C-C-C-O-B-,  cis- (B and COBn), cyclic ring
Then Oxidation to remove B to form trans-  structure
3Â¥2011-06-30 13:58:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

James-CG

ľ³æ (ÕýʽдÊÖ)

Borane reagent is so typical, other chiral borane reagent should go the same way, but ee, depending on the ligand on borane. IPC is one of the best, very bulky and stable
5Â¥2011-06-30 14:10:48
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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