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librashi
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- ×¢²á: 2010-01-15
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kingraise(½ð±Ò+8, ·ÒëEPI+1):лл£¡ 2010-05-19 09:22:48
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Èç¹û¿ÉÒÔ£¬Â¥Ö÷ÊÇ·ñÄܽ«»¯ºÏÎïÒÔ¼°Ò»Ð©»¯Ñ§×¨ÓÃÃû´Ê±ê×¢Ò»ÏÂÄØ£¿Ãû³Æ²»×¼È·¿ÉÄÜ»á·Ò벻̫׼ȷ¡£ ´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
wangjianna
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kingraise(½ð±Ò+7):лл£¡ 2010-05-19 09:23:00
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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 . |

3Â¥2010-05-18 10:09:32













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