2<i>H</i>-Azirines from a Concerted Addition of Alkylcarbenes to Nitrile Groups
作者:Wolfgang Knoll、Jean-Luc Mieusset、Vladimir B. Arion、Lothar Brecker、Udo H. Brinker
DOI:10.1021/ol100703r
日期:2010.5.21
Photolysis of aziadamantanos in the presence of fumoronitrile (FN) unexpectedly afforded conjugated 2H-azirines resulting from addition of the carbene to the CN triple bond. This represents the first example of a direct azirine formation starting from an alkylcarbene for which a concerted pathway is postulated. The novel outcome if the reaction is favored by the prior formation of a carbene-alkene complex, a type of adduct that only recently has been described.
4-Aziadamantan-1-amine: synthesis, reactions and cyclodextrin complexes
作者:Wolfgang Knoll、Michael M Bobek、Gerald Giester、Udo H Brinker
DOI:10.1016/s0040-4039(01)02013-5
日期:2001.12
A new and potentially therapeutic diazirine, 4-aziadamantan-1-amine, was synthesized. Structural characterization also included single crystal X-ray diffraction analysis. Photolysis of the title Compound in the solid phase afforded an azine. In contrast. pyrolysis in the gas phase gave two intramolecular carbene insertion products in a 4:1 ratio. A rationale for the observed diastereoselectivity is offered based upon ab initio calculations. Finally, inclusion compounds of the title compound with alpha- and beta -cyclodextrin were prepared. A 2:1 complex bearing two hosts was formed with alpha -cyclodextrin and a 1:1 complex was obtained with beta -cyclodextrin. The association constants were determined via induced circular dichroism (ICD) analysis. (C), 2001 Elsevier Science Ltd. All rights reserved.
Intra- and Intermolecular Diastereoselectivity of 5-Hydroxy-2-adamantylidene
作者:Michael M. Bobek、Udo H. Brinker
DOI:10.1021/ja001123m
日期:2000.8.1
Yurchenko, A. G.; Isaev, S. D.; Novoselov, E. F., Journal of Organic Chemistry USSR (English Translation), 1984, vol. 20, p. 201 - 202
作者:Yurchenko, A. G.、Isaev, S. D.、Novoselov, E. F.
DOI:——
日期:——
YURCHENKO, A. G.;ISAEV, S. D.;NOVOSELOV, E. F., ZH. ORGAN. XIMII, 1984, 20, N 1, 222-224