Studies in Vilsmeier-Haack reaction: Reaction of 3-methyl-1-phenyl-4-arylidene-5-pyrazolone

DOI 被引用文献2件

書誌事項

公開日
1989
DOI
  • 10.1135/cccc19890706
公開者
Institute of Organic Chemistry & Biochemistry

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説明

<jats:p>The 3-methyl group in <jats:italic>Ia, b</jats:italic> has been found to undergo diformylation by Vilsmeier reagent to give the aminoacrolein derivatives (<jats:italic>IIa, b</jats:italic>). Treatment of <jats:italic>IIa, b</jats:italic> with different reagents affords the related 1-phenyl-4-arylidene-5-pyrazolone derivatives with different heterocyclic systems in the 3-position. The Vilsmeier reaction on pyrazolopyrazole (<jats:italic>XIII</jats:italic>) have been utilized to prove chemically that new heterocyclic systems are formed only at the 3-position and no addition on the carbon-carbon double bond in the conjugated system O=C-C=C-(B) takes place.</jats:p>

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詳細情報 詳細情報について

  • CRID
    1360011145380218240
  • DOI
    10.1135/cccc19890706
  • ISSN
    12126950
    00100765
  • データソース種別
    • Crossref

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