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ÌâÄ¿£ºThe stereospecific preparation of (E)-1-aryl-F-1,3-butadienes ²»ÖªµÀÄܼìË÷µ½Âð£¿Ð»Ð» |
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baiyuefei
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- LS-EPI: 1647
- Ó¦Öú: 4642 (¸±½ÌÊÚ)
- ¹ó±ö: 46.969
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The stereospecific preparation of (E)-1-aryl-F-1,3-butadienes ×÷Õß: Pedersen, SD (Pedersen, Scot D.)[ 1 ] ; Burton, DJ (Burton, Donald J.)[ 1 ] À´Ô´³ö°æÎï: JOURNAL OF FLUORINE CHEMISTRY ¾í:155 ÌØ¿¯:SI Ò³:39-44 DOI:10.1016/j.jfluchem.2013.01.034 ³ö°æÄê:NOV 2013 ±»ÒýƵ´Î: 0 (À´×Ô Web of Science) ÒýÓõIJο¼ÎÄÏ×: 26 [ ²é¿´ Related Records ] ÒýÖ¤¹ØÏµÍ¼ ÕªÒª: The Pd (PPh3) (4)/Cu(I)I catalyzed cross coupling of (Z)-1-tri-n-butylstanny1-1,2,3,4,4-pentafluoro-1,3-butadiene with substituted aryl iodides provides a useful stereospecific route to (E)-1-aryl-1,2,3,4,4-pentafluoro-1,3-butadienes. Substituents, such as 4-nitro, 2-nitro, H, 3-CF3, 3-OCH3, 2-CH3, 1-Pr-i react stereospecifically with the dienyl stannane synthon. Only with a bulky electron-withdrawing substuent, such as 2-CF3, did significant isomerization occur in isolation of the aryl diene. The bis-coupled product is formed stereospecifically with 1,4-diiodobenzene. The methodology could be extended to stereospecifically prepared the 1-triethylsilyl-1E,3E,-1,2,3,4,5,6,6-heptafluoro-1,3,5-hexatriene synthon. (C) 2013 Elsevier B.V. All rights reserved. Èë²ØºÅ:WOS:000325447900004 ÎÄÏ×ÀàÐÍ: Article ÓïÖÖ: English ×÷Õ߹ؼü´Ê: Polyfluorinated dienylstannanes; 1-Aryl-F-1,3-butadienes; Pd(0) cross-coupling reactions; 1-Triethyl-1E; 3E-1,2,3,4,5,6,6-heptafluoro-1,3,5-hexatriene synthon; (Z)-1-Tri-n-butyl-stannyl-1,2,3,4,4-pentafluoro-1,3-butadiene synthon KeyWords Plus: STEREOSELECTIVE PREPARATION; (E)-2,3-DIFLUORO-3-STANNYLACRYLIC ESTER; COUPLING REACTIONS; SYNTHONS; DIENES ͨѶ×÷ÕßµØÖ·: Burton, DJ (ͨѶ×÷Õß) Univ Iowa, Dept Chem, Iowa City, IA 52242 USA. µØÖ·: [ 1 ] Univ Iowa, Dept Chem, Iowa City, IA 52242 USA µç×ÓÓʼþµØÖ·: donald-burton@uiowa.edu |
3Â¥2013-12-04 08:14:27
baiyuefei
°æÖ÷ (ÎÄѧ̩¶·)
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- LS-EPI: 1647
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guanjiezi: ½ð±Ò+5 2013-12-04 08:17:32
jssxh: ½ð±Ò+2, ¼ìË÷EPI+1, ллÄãµÄ²ÎÓ룡ϣÍû¼ÌÐø¹Ø×¢±¾°æ¿é£¡ 2013-12-04 17:14:38
guanjiezi: ½ð±Ò+5 2013-12-04 08:17:32
jssxh: ½ð±Ò+2, ¼ìË÷EPI+1, ллÄãµÄ²ÎÓ룡ϣÍû¼ÌÐø¹Ø×¢±¾°æ¿é£¡ 2013-12-04 17:14:38
2Â¥2013-12-04 08:14:15
baiyuefei
°æÖ÷ (ÎÄѧ̩¶·)
·çÑ©
- LS-EPI: 1647
- Ó¦Öú: 4642 (¸±½ÌÊÚ)
- ¹ó±ö: 46.969
- ½ð±Ò: 658106
- É¢½ð: 11616
- ºì»¨: 995
- ɳ·¢: 81
- Ìû×Ó: 69424
- ÔÚÏß: 13328.4Сʱ
- ³æºÅ: 676696
- ×¢²á: 2008-12-18
- ÐÔ±ð: GG
- רҵ: ºÏ³ÉÒ©Îﻯѧ
- ¹ÜϽ: Óлú½»Á÷
4Â¥2013-12-04 08:14:41














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