| Literature DB >> 19123205 |
Manfred Christl, Bernd Engels.
Abstract
A pyrazole derivative, considered as the stable five-membered cyclic allene 1 a by Dyker, Bertrand, et al., is reinterpreted to be a zwitterion 1 b. It is shown that the bonding characteristics typical for an allene are not possible for structure 1 a. Ar = 2,6-dimethylphenyl.Entities:
Year: 2009 PMID: 19123205 DOI: 10.1002/anie.200803476
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN: 1433-7851 Impact factor: 15.336