A facile stereoselective synthesis of difunctionalized 1,3-dienes containing tin and halogen via hydrozirconation of (Z)-3-(tributylstannyl)alk-3-en-1-ynes
作者:Ming-Zhong Cai、Yue Wang、Ping-Ping Wang
DOI:10.1016/j.jorganchem.2008.06.002
日期:2008.8
Sonogashira coupling of (E)-α-iodovinylstannanes 1 with (trimethylsilyl)acetylene gave (Z)-1-(trimethylsilyl)-3-(tributylstannyl)alk-3-en-1-ynes 2, which underwent a desilylation reaction to afford (Z)-3-(tributylstannyl)alk-3-en-1-ynes 3 in high yields. (1E,3Z)-1-Halo-3-(tributylstannyl)-substituted 1,3-dienes 5 could be synthesized stereoselectively via hydrozirconation of (Z)-3-(tributylstannyl)alk-3-en-1-ynes
Synthesis of (Z)-tributylstannyl enynes: systematic studies of Sonogashira cross-coupling reactions between (E)-1-iodovinyl-1-tributylstannanes and terminal acetylenes using amines or tetrabutylammonium hydroxide (TBAOH) as activator
作者:Carlos E.D. Nazario、Amanda S. Santana、Cristiane Y. Kawasoko、Carlos A. Carollo、Gabriela R. Hurtado、Luiz H. Viana、Sandro L. Barbosa、Palimécio G. Guerrero、Francisco A. Marques、Vânia B. Dabdoub、Miguel J. Dabdoub、Adriano C.M. Baroni
DOI:10.1016/j.tetlet.2011.06.004
日期:2011.8
Sonogashira cross-coupling reactions involving (E)-iodo vinyl stannanes and terminal acetylenes were carried out in the presence of Pd(PPh(3))(4), Cul and several amines, affording (Z)-tributylstannyl enynes in moderate to good yields (62-91%). Utilizing the catalytic system containing Pd(PPh(3))(4) (5%), Cul (10%), and TBAOH (40% in aqueous media) as activator, better yields (72-91%) and lower reaction times were achieved. (C) 2011 Elsevier Ltd. All rights reserved.
Cai, Mingzhong; Ye, Hongde; Zhao, Hong, Journal of Chemical Research - Part S, 2003, # 8, p. 465 - 467