A [4 + 4] annulation strategy for the synthesis of eight-membered carbocycles based on intramolecular cycloadditions of conjugated enynes.
A [4 + 4] annulation strategy for the synthesis of eight-membered carbocycles based on intramolecular cycloadditions of conjugated enynes.
复制标题
A [4 + 4]基于共轭Enynes的分子内环载量合成八元的碳循环的环形策略。
DOI:
10.1016/j.tet.2011.09.031
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发表时间:
2011-12
期刊:
影响因子:
2.1
通讯作者:
Danheiser RL
中科院分区:
文献类型:
--
作者:
Robinson JM;Tlais SF;Fong J;Danheiser RL
A [4 + 4] annulation strategy for the synthesis of eight-membered carbocycles is reported that proceeds via a cascade involving two pericyclic processes. In the first step, the [4 + 2] cycloaddition of a conjugated enyne with an electron-deficient cyclobutene generates a strained six-membered cyclic allene that isomerizes to the corresponding 1,3-cyclohexadiene. In the second step, this bicyclo[4.2.0]octa-2,4-diene intermediate undergoes thermal or acid-promoted 6-electron electrocyclic ring opening to furnish a 2,4,6-cyclooctatrienone. The latter transformation represents the first example of the promotion of 6-electron electrocyclic ring opening reactions by acid.
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影响因子:
2.1
作者:
BIENFAIT, B;COPPEMOTTE, G;SUSTMANN, R
通讯作者:
SUSTMANN, R
影响因子:
5.4
作者:
Hashmi, ASK;Sinha, P
通讯作者:
Sinha, P
影响因子:
5.2
作者:
Hayes, ME;Shinokubo, H;Danheiser, RL
通讯作者:
Danheiser, RL
影响因子:
15
作者:
Li X;Danishefsky SJ
通讯作者:
Danishefsky SJ
影响因子:
15
作者:
Dunetz, JR;Danheiser, RL
通讯作者:
Danheiser, RL