Bushby, Richard; Jarecki, Christine, Journal of the Chemical Society. Perkin transactions I, 1990, # 8, p. 2335 - 2343
作者:Bushby, Richard、Jarecki, Christine
DOI:——
日期:——
BUSHBY, RICHARD;JARECKI, CHRISTINE, J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N, C. 2335-2343
作者:BUSHBY, RICHARD、JARECKI, CHRISTINE
DOI:——
日期:——
Abnormal Nucleophilic Substitution on Methoxytropone Derivatives: Steric Strategy to Synthesize 5‐Substituted Azulenes
作者:Neha Rani Kumar、Abhijeet R. Agrawal、Sanjio S. Zade
DOI:10.1002/chem.201902702
日期:2019.11.7
optoelectronic materials. Despite the routes available for the preparation of substituted azulene derivatives, there remain few methods that allow regioselective substitution on the seven-membered ring of azulenes due to the subtle reactivity difference among the various positions. This report explores the reactivity of substituted tropolones as the azulene precursors and also provides a new method to create
The Effect of Base and Nucleophile on the Nucleophilic Substitution of Methoxytropone Derivatives: An Easy Access to 4- and 5-Substituted Multifunctional Azulenes
作者:Neha R. Kumar、Abhijeet R. Agrawal、Aditya Choudhury、Sanjio S. Zade
DOI:10.1021/acs.joc.0c00951
日期:2020.7.17
nucleophilic substitution on 3-substituted 2-methoxytropones to form azulenes is dependent on the nucleophile and base employed. With bulkier nucleophiles (ethyl/methyl cyanoacetate), the reaction proceeds with the abnormal nucleophilic substitution irrespective of the base and with smaller nucleophiles (malononitrile), the reaction follows base-dependent normal and abnormal nucleophilic substitution. Thus