Deacylative allylation of nitroalkanes: unsymmetric bisallylation by a three-component coupling.
Deacylative allylation of nitroalkanes: unsymmetric bisallylation by a three-component coupling.
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DOI:
10.1002/anie.201006273
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发表时间:
2011-02-11
影响因子:
16.6
通讯作者:
Tunge, Jon A.
中科院分区:
文献类型:
--
作者:
Grenning, Alexander J.;Tunge, Jon A.
Catalytic Tsuji-Trost allylation has become a ubiquitous method for allylation of active methylene compounds.[1] While monoallylation products are typically formed, bisallylation of malonates and related ketone enolates leads to 1, 6-dienes.[2] Given the utility of these 1, 6-heptadienes in metal-catalyzed cycloisomerization reactions,[3] it would be beneficial if one could perform controlled bisallylation of less stabilized carbon nucleophiles. Unfortunatly, the one-pot bisallylation of other carbon nucleophiles is not well documented and usually requires harsh reaction conditions.[4] Moreover, the addition of two different allyl electrophiles to form unsymmetric 1, 6-dienes in a one-pot operation is exceedingly rare.[5] Herein, we describe the development of an unsymmetric bisallylation of carbon nucleophiles and introduce catalytic deacylative allylation as a new strategy for tandem in situ generation and coupling of nucleophiles with allyl electrophiles (eq. 1). 1
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