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Communication | Regular issue | Vol 24, No. 8, 1986, pp.2111-2115
Published online, 1st January, 1970
DOI: 10.3987/R-1986-08-2111
Effects of Hetero Atom Substituents in the Decomposition of Pyrazolines: Abnormal Behavior of Methoxy Group Compared with Arylthio or Arylseleno Group

Masashi Hamaguchi,* Toshiya Furusawa, and Toshikazu Nagai

*Institute of Chemistry, College of General Educatin, Osaka University, Toyonaka, Osaka 560-8531, Japan


Quantitative hydrogen migration was observed on the thermal decomposition of 4-methoxy-substituted pyrazolines with two electron-withdrawing groups at C(3) except some trans-5-alkyl-4-methoxypyrazolines accompanied with methoxy migration.