90368-44-8Relevant academic research and scientific papers
THE REACTIONS OF o-QUINONE MONOIMIDES WITH SOME THIOPHENES AND FURANS
Heine, Harold W.,Williams, David K.,Rutherford, Jennifer L.,Ramphal, John,Williams, Elizabeth A.
, p. 1125 - 1140 (2007/10/02)
o-Quinone monoimides undergo inverse electron demand Diels-Alder reactions with thiophene, 2-alkylated thiophenes, 2- and 2,5-alkylated furans and benzofurans. 2,5-Dimethylthiophenes and 2-methylbenzothiophene, on the other hand interact with o-quinone
The Reactions of an o-Quinone Monoimide with Some Phenols
Heine, Harold W.,Ciaccio, James A.,Carson, Kenneth G.,Taylor, Carol M.
, p. 4039 - 4043 (2007/10/02)
The o-quinone monoimide N-(2,4-dichloro-6-oxo-2,4-cyclohexadien-1-ylidene)-4-nitrobenzamide (1) reacts with 2,6-dimethoxy-, 2,6-dimethyl-, and 2,6-dichlorophenols (2a-c) to form N-(2,4-dichloro-6-hydroxyphenyl)-N-(3,5-dimethoxy-, 3,5-dimethyl-, 3,5-dichloro-4-hydroxy)-4-nitrobenzamides (3a-c), respectively.Oxidation of 3a by 1 and 3b by DDQ lead to N-aryl-p-iminoquinones 4a,b.Oxidative dimerizations by either C-C or C-O coupling occur when 1 is admixed with the sterically hindered 2,6-di-tert-butyl-, 2,4-di-tert-butyl-, 4-bromo-2,6-di-tert-butyl-, and 2,4,6-tri-tert-butylphenols.
Synthesis and Reactions of N-(2,4-Dichloro-6-oxo-2,4-cyclohexadien-1-ylidene)-4-nitrobenzamide with Alkenes
Heine, Harold W.,Barchiesi, Barbara J.,Williams, Elizabeth A.
, p. 2560 - 2565 (2007/10/02)
The cycloaddition reactions of N-(2,4-dichloro-6-oxo-2,4-cyclohexadien-1-ylidene)-4-nitrobenzamide (3) and other o-quinone monoimides with electron-rich alkenes to give derivatives of 2,3-dihydro-4H-1,4-benzoxazine are described.Reaction of 3 with 2,3-dim
