In Situ Generation of Nitrilimines from Aryldiazonium Salts and Diazo Esters: Synthesis of Fully Substituted Pyrazoles under Room Temperature
A novel one-pot synthesis for fully substituted pyrazoles has been well developed via the in situ generation of nitrilimines from aryldiazonium salts and diazo esters and a subsequent cycloaddition with 1,3-dicarbonyl compounds. High yields, mild conditio
THE STRUCTURE OF THE CYCLOADDITION PRODUCTS OF α-KETONITRILIMINES TO α,β-UNSATURATED KETONES
The cycloaddition of C-ethoxycarbonyl-N-arylnitrilimines 3 and their C-acetyl analogs 4 to α,β-unsaturated ketones 5 give predominantly the 5-acyl-4-aryl-2-pyrazoline derivatives 8 and 9 respectively.The structures of the cycloadducts 8 and 9 were support
Ezmirly, Saleh T.,Shawali, Ahmad S.,Bukhari, Ahmad M.
p. 1743 - 1750
(2007/10/02)
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