Synthesis of (<i>E</i>,<i>E</i>)- and (<i>Z</i>,<i>Z</i>)-1,5-Cycloalkadienes by Means of the Electrochemical Cyclization of Allylic 1,ω-Dibromides
作者:Masao Tokuda、Kuniaki Satoh、Hiroshi Suginome
DOI:10.1246/bcsj.60.2429
日期:1987.7
Electrolysis of (E,E)-1,n-dibromo-2,(n-2)-alkadienes (n=12, 14) in tetrahydrofuran gave the corresponding twelve or fourteen-membered (E,E)-1,5-cycloalkadienes, albeit in low yields, together with (E)-4-vinylcycloalkenes and isomeric alkadienes. Similar electrolysis of (Z,Z)-1,n-dibromo-2,(n-2)-alkadienes (n=10, 12, 14) gave the corresponding ten, twelve, or fourteen-membered (Z,Z)-1,5-cycloalkadienes in 11 to 13% yields, with the accompanying formation of (Z)-4-vinylcycloalkenes and isomeric alkadienes.
四氢呋喃中(E,E)-1,n-二溴-2,(n-2)-烯二炔(n=12, 14)的电解反应生成了相应的十二或十四元(E,E)-1,5-环烯二炔,尽管产率较低,同时伴随着(E)-4-乙烯基环烯和异构烯二炔的生成。类似地,(Z,Z)-1,n-二溴-2,(n-2)-烯二炔(n=10, 12, 14)的电解反应生成了相应的十、十二或十四元(Z,Z)-1,5-环烯二炔,产率为11%至13%,同时伴随着(Z)-4-乙烯基环烯和异构烯二炔的形成。