| ²é¿´: 850 | »Ø¸´: 11 | |||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | |||
wangyulnuÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
|
[½»Á÷]
¡¾Óн±»î¶¯¡¿ÎÒ¸ø´ó¼ÒÀ´½²paper
|
||
|
ΪÁË´Ù½ø´ó¼ÒµÄѧÊõ½»Á÷£¬Çë°ÑÄã¿´¶®µÄpaper½²¸ø±ðÈË¿´£¨ÖÐÎÄ£©¡£ÕâÑù£¬ÖÚ¶à³æÓѲ»µ«¿ÉÒÔ»¥Ïàѧϰ£¬½Úʡʱ¼ä£¬¶øÇÒʰ빦±¶¡£ÎÒÃÇÐèÒª¸ßˮƽµÄpaper£¬´ÓÖÐÎüÈ¡Ñø·Ö¡£Òò´Ë£¬´ó¼ÒËù½²ÎÄÕµÄÓ°ÏìÒò×Ó±ØÐëÒª´óÓÚ6£¬ÀýÈ磬Nature£¬Science£¬Angewandte Chemie International Edition£¬JACS£¬PNAS£¬Nano lett£¬Adv MaterµÈ¡£¾ßÌå¸ñʽºÍ½±Àø°ì·¨ÈçÏ£º ¡¾ÂÛÎÄÌâÄ¿¡¿£º ¡¾×÷Õß¡¿£º ¡¾µ¥Î»¡¿£º ¡¾ÆÚ¿¯Ãû³Æ¡¿£º ¡¾Ä꣬¾í£¬Ò³¡¿£º ¡¾Ó°ÏìÒò×Ó¡¿£º ÿƪÂÛÎĽ±Àø 5-20 ¸ö½ð±Ò£¨ÓÉ·¢ÌûÈ˵ÄÀͶ¯Á¿¾ö¶¨£© ¡¾×¢Ò⡿Ϊ±£Ö¤±¾ÌûµÄÕû½à£¬Ð»¾øÒ»Çлظ´Óë±¾ÄÚÈÝÎ޹صÄÌû¡£ [ Last edited by wangyulnu on 2006-5-26 at 17:28 ] |
» ²ÂÄãϲ»¶
¿ÉÉúÎï½µ½â¾Ûõ¥ÕýÔÚÖØËÜÏÖ´úÒ½ÁÆÆ÷е
ÒѾÓÐ0È˻ظ´
26½ì²©Ê¿ÉêÇë
ÒѾÓÐ4È˻ظ´
Óлú¸ß·Ö×Ó²ÄÁÏÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ213È˻ظ´
PLLA ΢ÇòÔÚÉúÎïҽѧÁìÓòµÄÑо¿ÓëÓ¦ÓÃ
ÒѾÓÐ1È˻ظ´
PLLA ΢ÇòµÄ²ÄÁÏÌØÐÔÓëÖÆ±¸¹¤ÒÕ½âÎö
ÒѾÓÐ0È˻ظ´
Ò½ÓþۼºÄÚõ¥£¨PCL£©È«½âÎö£º´ÓÁ½¶Îʽ½µ½âµ½×éÖ¯¹¤³ÌÓ¦ÓÃ
ÒѾÓÐ0È˻ظ´
·´Ïà¹è½ºÈçºÎÔÙÉú£¿
ÒѾÓÐ1È˻ظ´
¹þ¶û±õÀí¹¤´óѧ2026ÄêÑо¿Éúµ÷¼Á£¬²ÄÁÏ¿ÆÑ§Ó뻯ѧ¹¤³ÌѧԺÑо¿Éúµ÷¼Á
ÒѾÓÐ4È˻ظ´
Î人һ±¾¸ßУÕÐÊÕ²ÄÁÏ¡¢»¯Ñ§¡¢¸ß·Ö×Ó¡¢·ÄÖ¯¡¢ÉúÎïÏà¹Ø×¨ÒµË¶Ê¿Éú
ÒѾÓÐ0È˻ظ´

wangyulnu
ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 30.89
- ½ð±Ò: 8556.8
- É¢½ð: 281
- ºì»¨: 16
- Ìû×Ó: 2557
- ÔÚÏß: 222.9Сʱ
- ³æºÅ: 22841
- ×¢²á: 2003-09-17
- רҵ: ²ÄÁÏ»¯Ñ§
- ¹ÜϽ: Óлú½»Á÷

2Â¥2006-05-26 17:12:47
Palladium
ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
»ð³æ
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 0.8
- ½ð±Ò: 5626
- ºì»¨: 1
- Ìû×Ó: 2510
- ÔÚÏß: 79.7Сʱ
- ³æºÅ: 127705
- ×¢²á: 2005-12-09
- רҵ: Organometallics
- ¹ÜϽ: Óлú½»Á÷
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
wangyulnu(½ð±Ò+8):3x£¬Í¼Æ¬ºÃÏñ²»ÄÜÏÔʾ
wangyulnu(½ð±Ò+8):3x£¬Í¼Æ¬ºÃÏñ²»ÄÜÏÔʾ

3Â¥2006-05-26 17:13:38
Palladium
ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
»ð³æ
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 0.8
- ½ð±Ò: 5626
- ºì»¨: 1
- Ìû×Ó: 2510
- ÔÚÏß: 79.7Сʱ
- ³æºÅ: 127705
- ×¢²á: 2005-12-09
- רҵ: Organometallics
- ¹ÜϽ: Óлú½»Á÷
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
wangyulnu(½ð±Ò+8):Thank you very much!
wangyulnu(½ð±Ò+8):Thank you very much!
|
×öPd´ß»¯µÄ£¬C-C¼üżÁ¬·´Ó¦µÄ£¬Heck·´Ó¦µÄ£¬Àë×ÓÒºÌåµÄ¿ÉÒÔÒýÓÃÕâÆª×÷Æ·¡£ ¡¾ÂÛÎÄÌâÄ¿¡¿£ºIonic Liquid-Promoted, Highly Regioselective Heck Arylation of Electron-Rich Olefins by Aryl Halides ¡¾×÷Õß¡¿£ºMo, J.; Xu, L.; Xiao, J. ¡¾µ¥Î»¡¿£ºUniversity of Liverpool ¡¾ÆÚ¿¯Ãû³Æ¡¿£ºJ. Am. Chem. Soc. ¡¾Ä꣬¾í£¬Ò³¡¿£º2005; 127(2); 751-760. ¡¾Ó°ÏìÒò×Ó¡¿£º6.9 Ionic Liquid-Promoted, Highly Regioselective Heck Arylation of Electron-Rich Olefins by Aryl Halides Mo, J.; Xu, L.; Xiao, J. J. Am. Chem. Soc.; (Article); 2005; 127(2); 751-760. DOI: 10.1021/ja0450861 http://pubs3.acs.org/acs/journal ... i=10.1021/ja0450861 ![]() Abstract: Palladium-catalyzed regioselective Heck arylation of the electron-rich olefins, vinyl ethers 1a-d, enamides 1e-g, and allyltrimethylsilane 1h, has been accomplished in imidazolium ionic liquids with a wide range of aryl bromides and iodides instead of the commonly used, but commercially unavailable and expensive, aryl triflates. The reaction proceeded with high efficiency and remarkable regioselectivity without the need for costly or toxic halide scavengers, leading exclusively to substitution by aryl groups of diverse electronic and steric properties at the olefinic carbon to the heteroatom of 1a-g and to the heteroatom of 1h. In contrast, the arylation reaction in molecular solvents led to mixtures of regioisomers under similar conditions. Several lines of evidence point to the unique regiocontrol stemming from the ionic environment provided by the ionic liquid that alters the reaction pathway. The chemistry provides a simple, effective method for preparing branched, arylated olefins and contributes to the extension of Heck reaction to a wider range of substrates. ÖÐÎĽéÉÜ£º Heck·´Ó¦ÊÇC-C¼ü³É¼üµÄÖØÒªÊֶΡ£È±µçÐ͵ÄÏ©ÌþµÄHeck·´Ó¦Ò»°ã¶¼Äܵõ½¸ßÇøÓòÑ¡ÔñÐÔµÄÏßÐÔ²úÎȻ¶ø£¬¸»µçÐ͵ÄÏ©ÌþµÄHeck·´Ó¦Ò»°ã¶¼µÃµ½ÏßÐÔ²úÎïºÍÖ§Á´²úÎïµÄ»ìºÏÎÕâÑù£¬¾ÍÄÑÒԵõ½Ó¦Óá£Õâ¸öÎÊÌâ¿ÉÒÔͨ¹ý¼ÓÈëAg»òÕßTlÀ´½â¾ö£¬µ«ÊÇAgÑκܹ󣬶øÇÒЧÂʵÍÏ£¬TlЧ¹ûºÜºÃ£¬µ«ÊÇËüµÄ¶¾ÐÔÊÇÖÚËùÖÜÖªµÄ£¬ÕâÑù¾ÍÏÞÖÆÕâÀà·´Ó¦µÄÓ¦Óá£È»¶ø£¬Àë×ÓÒºÌåµÄʹÓã¬Ê¹Õâ¸öÎÊÌâµÃµ½Á˽â¾ö¡£ [ Last edited by Palladium on 2006-5-26 at 19:10 ] |

4Â¥2006-05-26 17:13:51
Palladium
ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
»ð³æ
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 0.8
- ½ð±Ò: 5626
- ºì»¨: 1
- Ìû×Ó: 2510
- ÔÚÏß: 79.7Сʱ
- ³æºÅ: 127705
- ×¢²á: 2005-12-09
- רҵ: Organometallics
- ¹ÜϽ: Óлú½»Á÷
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
wangyulnu(½ð±Ò+8):¸Õ¸ÕÌý¹ýFuµÄ±¨¸æ£¬ÕæÊǸßÊÖÖеĸßÊÖ£¡
wangyulnu(½ð±Ò+8):¸Õ¸ÕÌý¹ýFuµÄ±¨¸æ£¬ÕæÊǸßÊÖÖеĸßÊÖ£¡
|
×öPd´ß»¯µÄ£¬C-C¼üżÁ¬·´Ó¦µÄ£¬Suzuki·´Ó¦µÄ£¬¿ÉÒÔÒýÓÃÕâÆª×÷Æ·¡£ÕâÆªÎÄÕÂÒýÓôÎÊý±Æ½ü500´Î£¨497£©¡£ ¡¾ÂÛÎÄÌâÄ¿¡¿£ºVersatile Catalysts for the Suzuki Cross-Coupling of Arylboronic Acids with Aryl and Vinyl Halides and Triflates under Mild Conditions ¡¾×÷Õß¡¿£ºLittke, A. F.; Dai, C.; Fu, G. C. ¡¾µ¥Î»¡¿£ºMIT ¡¾ÆÚ¿¯Ãû³Æ¡¿£ºJ. Am. Chem. Soc. ¡¾Ä꣬¾í£¬Ò³¡¿£º2000; 122(17); 4020-4028. ¡¾Ó°ÏìÒò×Ó¡¿£º6.9 ![]() Fu, G. C. ÊÇMITµÄ×ÊÉî½ÌÊÚ£¬Ò²ÊÇJACSµÄ±à¼Ö®Ò»¡£ÕæÕýµÄ´óÅ£¡£ Versatile Catalysts for the Suzuki Cross-Coupling of Arylboronic Acids with Aryl and Vinyl Halides and Triflates under Mild Conditions Littke, A. F.; Dai, C.; Fu, G. C. J. Am. Chem. Soc.; (Article); 2000; 122(17); 4020-4028. DOI: 10.1021/ja0002058 http://pubs3.acs.org/acs/journal ... i=10.1021/ja0002058 Abstract: Through the use of Pd2(dba)3/P(t-Bu)3 as a catalyst, a wide range of aryl and vinyl halides, including chlorides, undergo Suzuki cross-coupling with arylboronic acids in very good yield, typically at room temperature; through use of Pd(OAc)2/PCy3, a diverse array of aryl and vinyl triflates react cleanly at room temperature. Together, these two catalyst systems cover a broad spectrum of commonly encountered substrates for Suzuki couplings. Furthermore, they display novel reactivity patterns, such as the selective cross-coupling by Pd2(dba)3/P(t-Bu)3 of an aryl chloride in preference to an aryl triflate, and they can be used at low loading, even for reactions of aryl chlorides. Preliminary mechanistic work indicates that a palladium monophosphine complex is the active catalyst in the cross-coupling of aryl halides. ¾µäÖеľµä£¬×öC-C coupling µÄͬѧ±Ø¿´£¬±ØÒýµÄºÃÎÄÕ¡£ [ Last edited by Palladium on 2006-5-26 at 19:29 ] |

5Â¥2006-05-26 17:14:21
paracyclophane
ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)
³æ¶ù·É¡«¡«
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 1.38
- ½ð±Ò: 5829
- É¢½ð: 416
- ºì»¨: 3
- Ìû×Ó: 1766
- ÔÚÏß: 76.9Сʱ
- ³æºÅ: 120664
- ×¢²á: 2005-12-03
- ÐÔ±ð: GG
- רҵ: ½ðÊôÓлú»¯Ñ§
- ¹ÜϽ: ´ß»¯
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
wangyulnu(½ð±Ò+8):Thank you very much!
wangyulnu(½ð±Ò+8):Thank you very much!
|
¡¾ÂÛÎÄÌâÄ¿¡¿£ºCatalysts for Suzuki-Miyaura Coupling Processes: Scope and Studies of the Effect of Ligand Structure ¡¾×÷Õß¡¿£ºStephen L. Buchwald ¡¾µ¥Î»¡¿£ºContribution from the Department of Chemistry, Massachusetts Institute of Technology,Cambridge, Massachusetts 02139 ¡¾ÆÚ¿¯Ãû³Æ¡¿£ºJ. AM. CHEM. SOC. ¡¾Ä꣬¾í£¬Ò³¡¿£º2005, 127, 4685-4696 ¡¾Ó°ÏìÒò×Ó¡¿£º6.9 À´×ÔMITµÄÅ£ÈËStephen L. Buchwald¡£ Suzuki ·´Ó¦ÊÇÒ»Àà·Ç³£ÖØÒªµÄ C-C żÁª·´Ó¦£¬Ö÷ÒªÊÇÖ¸½ðÊôÅäºÏÎï´ß»¯Ï±´ú·¼ÌþºÍ·¼»ùÅðËáʵÏÖC-CżÁªµÄÕâÀà·´Ó¦£¨ÈçͼËùʾ£©¡£ÔÚÕâÆªÎÄÕÂÖÐ×÷ÕßÖØµã½éÉÜÁË2-(2',6'-dimethoxybiphenyl)-dicyclohexylphosphine (SPhos) Õâ¸öÅäÌåÔÚÕâÀà·´Ó¦ÖеľßÌåÓ¦Óá£SPhos ÊÇĿǰSuzuki ·´Ó¦ÖÐЧ¹û×îºÃµÄÒ»¸öÅäÌ壬ҲÊÇBuchwaldµÄÁ¦×÷Ö®Ò»¡£ ÕâÆªÎÄÕÂÖÐÊý¾Ý·Ç³£¶à£¬×÷ÕßÓÃPd(OAc)2´ß»¯£¬¶Ô´ø²»Í¬È¡´ú»ùµÄ¡¢¿Õ¼äλ×費ͬ¡¢µç×ÓÔÆÃܶȸ÷ÒìµÄ¶àÖÖÂÈ´ú·¼Ìþ¡¢äå´ú·¼Ìþ¶¼½øÐÐÁËÊÔÑ飬·¼ÏãÅðËáÒ²°üÀ¨¶àÖÖ²»Í¬È¡´ú»ùµÄ¡¢¿Õ¼äλ×費ͬ¡¢µç×ÓÔÆÃܶȸ÷ÒìµÄ±½»ùÅðËá¼°ÔÓ·¼ÏãÅðËᣬ¾ùµÃµ½·Ç³£ºÃµÄ½á¹û¡£ ÎÒ°ÑÕâÆªÎÄÏ׷ŵ½¸½¼þÖУ¬ÓÐÐËȤµÄÅóÓÑ¿ÉÒÔÏÂÔØ¿´¿´¡£ [ Last edited by paracyclophane on 2006-5-26 at 18:33 ] |

6Â¥2006-05-26 17:21:44
tanduanming
¾èÖú¹ó±ö (Ö°Òµ×÷¼Ò)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ¹ó±ö: 0.1
- ½ð±Ò: 3768.2
- ºì»¨: 1
- Ìû×Ó: 3094
- ÔÚÏß: 54Сʱ
- ³æºÅ: 120778
- ×¢²á: 2005-12-03
- ÐÔ±ð: GG
- רҵ: Org Chem
¡ï ¡ï ¡ï
wangyulnu(½ð±Ò+3):ºÜºÃµÄ½¨Ò飬лл
wangyulnu(½ð±Ò+3):ºÜºÃµÄ½¨Ò飬лл
|
ºÃÏñ´ó»ïÖ»ÊÇÔÚ·ÒëÕªÒª¡£ÈçºÎÖ¤Ã÷ÄãÕæÕýͨ¶ÁÈ«ÎÄ£¬¶Á¶®È«ÎÄ£¿ ²»Èç½éÉܵÚÒ»¶ÎÄÚÈÝÊÇʲô£¬µÚ¶þ¶ÎÄÚÈÝÊÇʲô..... ±í1ÄÚÈÝÊÇʲô£¬±í2ÄÚÈÝÊÇʲô......£¨¸÷Ò»¾ä»°¾Í¹»ÁË£© »¹ÓнéÉܵ±Ê±µÄ¼¼Êõ±³¾°£¨Ê²Ã´ÒѾ½â¾ö£¬Ê²Ã´Ã»½â¾ö.....)£¬±¾ÎĵűÏ×ÔÚÄÄÀï¡£ Íê³É±¾ÎÄÐèҪʲôµÄÒÇÆ÷Ìõ¼þºÍ֪ʶ±³¾°¡£ ×îºÃ¼ÓÉ϶Áºó¸Ð£¬ÎÄÕ¶ÔÄãµÄÆôʾ¡£ ÆäʵÎÒ¹ØÐĵÄÊÇ×ö¶àÉÙ¹¤×÷£¬ÔõÑùµÄ¹¤×÷²Å¿ÉÒÔ¡¾´Õ¹»¡¿Ò»ÆªÅ£ÎÄÕ¡£ÒÔ¼°ÈçºÎÕ¹¿ªÌÖÂÛ¡£¡¾ÖÐÎĵÄÎÄÕ¼¸ºõ¶¼ÊDz»¶®ÌÖÂ۵ġ£¡ª¡ª¸öÈËÆ«¼û¡£¡¿ |

7Â¥2006-06-01 17:36:11
ÓÀÔ¶Ö§³Ö£¡£¡£¡£¡£¡£¡£¡£¡£¡
![]() ![]() |
8Â¥2006-06-03 13:52:57
zxf984
ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)
- Ó¦Öú: 68 (³õÖÐÉú)
- ½ð±Ò: 39144.7
- É¢½ð: 30
- ºì»¨: 23
- Ìû×Ó: 13043
- ÔÚÏß: 3545.5Сʱ
- ³æºÅ: 80497
- ×¢²á: 2005-07-15
- ÐÔ±ð: GG
- רҵ: ÎÞ»ú²ÄÁÏ»¯Ñ§
9Â¥2006-06-03 13:55:52
croninszl
Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)
¡ï¡ï¡ï¡ï¡ï¡ï¡ï¡ï¡ï¡ï¡ï
- Ó¦Öú: 22 (СѧÉú)
- ¹ó±ö: 0.001
- ½ð±Ò: 6191.8
- É¢½ð: 7530
- ºì»¨: 27
- Ìû×Ó: 4446
- ÔÚÏß: 543.2Сʱ
- ³æºÅ: 131510
- ×¢²á: 2005-12-12
- ÐÔ±ð: GG
- רҵ: ÓлúºÏ³É
|
:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P:P |
10Â¥2006-06-04 17:08:59













»Ø¸´´ËÂ¥



