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kingraise(½ð±Ò+8, ·­ÒëEPI+1):лл£¡ 2010-05-19 09:22:48
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´Ó×ÖÃæ·­Ò룺Indolizine is obtained by dehydrogenation and aromatization of the resultant which is generated in the 1,3-dipolar cycloaddition reaction between pyridine ylid and olefin or alkyne dipolar protophilic. This article mainly studies the influence of variable solvent on synthetizing indolizine derivant by 1,2-annulation, during  the reaction between dichlone and pyridine ylid under the action of alkali K2CO3 .
2Â¥2010-05-18 09:34:13
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wangjianna

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kingraise(½ð±Ò+7):лл£¡ 2010-05-19 09:23:00
ÓÃßÁà¤Ò¶Á¢µÂÓëÇ׿¼«µÄÏ©Ìþ»òȲÌþ·¢Éú1,3-ż¼«»·¼Ó³É·´Ó¦£¬×îºóÍÑÇâ·¼¹¹»¯µÃµ½ÖеªÜá¡£±¾ÎÄÖ÷ÒªÑо¿¶þÂÈÝÁõ«ÓëßÁà¤Ò¶Á¢µÂÔÚ¼îK2CO3×÷ÓÃÏ£¬²»Í¬µÄÈܼÁ¶ÔºÏ³ÉÁË1£¬2-Ôö»·ÖеªÜáÑÜÉúÎïµÄÓ°Ïì¡£
pyridine ylid and pro-dipole olefin or alkyne react as 1,3-dipolar cycloaddition reaction, then dehydrogenation and aromatization to form indolizine.This article  studies the influence of different solvent on synthesis of 1,2-annulation indolizine derivant by reaction of dichlone and pyridine ylid under the alkali K2CO3 .
Reaction Calorimetric/ Process safety/Hazard evaluation
3Â¥2010-05-18 10:09:32
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