Phase-Transfer Catalyzed Alkylation and Cycloalkylation of 3-Substituted-1<i>H</i>-pyrazol-2-in-5-ones in the Absence or Presence of Carbon Disulphide
作者:A. Kh. Khalil、M. A. Hassan、M. M. Mohamed、A. M. El-Sayed
DOI:10.1080/104265090517208
日期:2005.2
PTC-alkylation of 3-substituted-1H-pyrazol-2-in-5-ones by different organohalogen reagents at 25degreesC in the presence of tetrabutylammonium bromide as-catalyst was investigated either in the absence or presence of CS2. This work aims to study the comparative reactivity of N-versus O-versus C-alkylation and cycloalkylation.
SINGH G.; SINGH D.; RAM R. N., TETRAHEDRON LETT., 1981, 22, NO 23, 2213-2216