Regioselective synthesis of pyrazoles via the ring cleavage of 3-substituted N-alkylated 3-hydroxyisoindolin-1-ones
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Title
Regioselective synthesis of pyrazoles via the ring cleavage of 3-substituted N-alkylated 3-hydroxyisoindolin-1-ones
Author(s)
Kyu Tae Chang; Yong Hyun Choi; Seung Ho Kim; Yong Jin Yoon; Woo Song Lee
Bibliographic Citation
Journal of Chemical Society, Perkin Transaction 1, vol. 2002, no. 2, pp. 207-210
Publication Year
2002
Abstract
The regioselective synthesis of pyrazoles via the ring cleavage of 3-substituted N-alkylated 3-hydroxyisoindolin-1-ones was reported. A one-pot addition-decyclisation-cyclocondensation process was employed in the analysis. The N-tert-butyl group was found to be the best for producing the α-acetylenic ketone intermediate.