Effect of ester on rhodium-catalyzed intermolecular [5+2] cycloaddition of 3-acyloxy-1,4-enynes and alkynes.
Effect of ester on rhodium-catalyzed intermolecular [5+2] cycloaddition of 3-acyloxy-1,4-enynes and alkynes.
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DOI:
10.1039/c3cc40634b
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发表时间:
2013-04-04
期刊:
影响因子:
--
通讯作者:
Tang W
中科院分区:
文献类型:
--
作者:
Schienebeck CM;Robichaux PJ;Li X;Chen L;Tang W
We systematically examined the effect of different esters for the rhodium-catalyzed intermolecular [5 + 2] cycloaddition of 3-acyloxy-1,4-enynes and alkynes with a concomitant 1,2-acyloxy migration. Significant rate acceleration was observed for benzoate substrates bearing an electron-donating substituent. The cycloaddition can now be conducted at much more practical conditions for most terminal alkynes.
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