Inverse electron demand Diels-Alder reactions of 1,2,3-triazines: pronounced substituent effects on reactivity and cycloaddition scope.
Inverse electron demand Diels-Alder reactions of 1,2,3-triazines: pronounced substituent effects on reactivity and cycloaddition scope.
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DOI:
10.1021/ja204856a
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发表时间:
2011-08-10
影响因子:
15
通讯作者:
Boger DL
中科院分区:
文献类型:
--
作者:
Anderson ED;Boger DL
A systematic study of the inverse electron demand Diels–Alder reactions of 1,2,3-triazines is disclosed, including an examination of the impact of a C5 substituent. Such substituents were found to exhibit a remarkable impact on the cycloaddition reactivity of the 1,2,3-triazine without altering, and perhaps even enhancing, the intrinsic cycloaddition regioselectivity. The study revealed that not only may the reactivity be predictably modulated by a C5 substituent (R = CO2Me > Ph > H), but that the impact is of a magnitude to convert 1,2,3-triazine (1) and its modest cycloaddition scope into a heterocyclic azadiene system with a reaction scope that portends extensive synthetic utility, expanding the range of participating dienophiles. Significantly, the studies define a now powerful additional heterocyclic azadiene, complementary to the isomeric 1,2,4-triazines and 1,3,5-triazines, capable of dependable participation in inverse electron demand Diels–Alder reactions, extending the number of complementary heterocyclic ring systems accessible with implementation of the methodology.
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影响因子:
15
作者:
Blackman, Melissa L.;Royzen, Maksim;Fox, Joseph M.
通讯作者:
Fox, Joseph M.
影响因子:
3.6
作者:
BOGER, DL;BALDINO, CM
通讯作者:
BALDINO, CM
影响因子:
3.6
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通讯作者:
PATEL, M
影响因子:
3.6
作者:
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通讯作者:
SAUER, J
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通讯作者:
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