Gold-Catalyzed Hydroamination of Alkynes and Allenes with Parent Hydrazine
作者:Rei Kinjo、Bruno Donnadieu、Guy Bertrand
DOI:10.1002/anie.201100740
日期:2011.6.6
A diverse array of nitrogen‐containing compounds were formed by the addition of hydrazine to alkynes, diynes, enynes, and allenes in the presence of cationic gold(I) complexes with a cyclic (alkyl)(amino)carbene ligand (see scheme; the X‐ray crystal structure of the gold–hydrazine complex is shown). This hydroamination is an ideal initial step for the preparation of acyclic and heterocyclic bulk chemicals
Cross-Hyperconjugation: An Unexplored Orbital Interaction between π-Conjugated and Saturated Molecular Segments
作者:Rikard Emanuelsson、Andreas Wallner、Eugene A. M. Ng、Joshua R. Smith、Djawed Nauroozi、Sascha Ott、Henrik Ottosson
DOI:10.1002/anie.201206030
日期:2013.1.14
Crossing a barrier: Molecules with saturated ER2 units (E=C or Si, R=electron‐releasing group) inserted between two π‐conjugated segments have electronic and optical properties that resemble those of cross‐conjugated molecules (see figure). This cross‐hyperconjugation provides a deeper understanding of the conjugation phenomenon, and is an alternative to cross‐conjugation in the design of molecules
Synthesis, structure, and absorption spectra of the well-defined 1,1′-bicyclopentadiene derivatives
作者:Shigehiro Yamaguchi、Kohei Tamao
DOI:10.1016/0040-4039(96)00479-0
日期:1996.4
The well-defined 1,1′-bicyclopentadiene derivatives have been prepared by an endo-endo mode intramolecular reductive cyclization of a 1,4-diyne using lithium naphthalenide followed by oxidative coupling via a higher order cyanocuprate. The crystal structure and UV spectra of the bicyclopentadienes have also been determined.
GOLD CATALYZED HYDROAMINATION OF ALKYNES AND ALLENES
申请人:Bertrand Guy
公开号:US20110166349A1
公开(公告)日:2011-07-07
Methods are provided for the catalytic hydroamination of compounds having an alkyne or allene functional group, in which the compound is contacted with ammonia or an amine in the presence of a catalytic amount of a gold complex under conditions sufficient for hydroamination to occur.
Gold catalyzed hydroamination of alkynes and allenes
申请人:Bertrand Guy
公开号:US08580990B2
公开(公告)日:2013-11-12
Methods are provided for the catalytic hydroamination of compounds having an alkyne or allene functional group, in which the compound is contacted with ammonia or an amine in the presence of a catalytic amount of a gold complex under conditions sufficient for hydroamination to occur.