A rapid route to aminocyclopropanes via carbamatoorganozinc carbenoids.
A rapid route to aminocyclopropanes via carbamatoorganozinc carbenoids.
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DOI:
10.1002/anie.201304720
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发表时间:
2013-09-16
影响因子:
16.6
通讯作者:
Motherwell, William B.
中科院分区:
文献类型:
--
作者:
Ishikawa, Shingo;Sheppard, Tom D.;D'Oyley, Jarryl M.;Kamimura, Akio;Motherwell, William B.
The aminocyclopropane unit can be found in a wide variety of biologically active natural products and pharmaceuticals,[1] and its inherent reactivity can be harnessed in synthetically useful ring-opening reactions.[2] The preparation of aminocyclopropanes has attracted considerable attention, though many approaches require functional-group manipulation of a preformed cyclopropane, as in the Curtius rearrangement of cyclopropylcarboxylic acids,[3] reduction of nitrocyclopropanes,[4] reductive amination of cyclopropanone derivatives,[5] and the reaction of cyclopropylchloroboranes with azides.[6] The cyclopropanation of geometrically defined enamine and enamide derivatives [7] and the elegant variants of the Kulinkovich reaction [8] using amides [9] or nitriles,[10] also provide versatile methods. Conceptually, the simplest approach would be the addition of a protected aminocarbenoid to an alkene, as this would enable the preparation of aminocyclopropanes from the vast array of readily accessible geometrically defined alkenes. Unfortunately, save for a beautiful example by Barluenga et al. involving a chromium-based dialkylamino carbenoid,[11] Fischer carbenoids cannot be used in such reactions since they undergo competing metathesis. Herein, we report a simple and direct one pot synthesis of protected aminocyclopropanes, a reaction which features the first in situ generation of hitherto unknown carbamatoorganozinc carbenoids (Scheme 1).
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DOI:
10.1002/anie.199604131
发表时间:
1996-03-01
期刊:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH
影响因子:
--
作者:
Chaplinski, V;deMeijere, A
通讯作者:
deMeijere, A
影响因子:
5.2
作者:
Bertus, Philippe;Menant, Christine;Szymoniak, Jan
通讯作者:
Szymoniak, Jan
DOI:
10.1039/c39870000897
发表时间:
1987-06-15
影响因子:
--
作者:
KANG, J;KIM, KS
通讯作者:
KIM, KS
影响因子:
4.3
作者:
de Meijere, Armin;Chaplinski, Vladimir;Schill (Nee Brackmann), Farina
通讯作者:
Schill (Nee Brackmann), Farina
影响因子:
3.4
作者:
Cai, SP;Dimitroff, M;Therrien, J
通讯作者:
Therrien, J