• Title of article

    Mineral supported syntheses of benzoxazine-2-thiones under microwave irradiation

  • Author/Authors

    Lal Dhar S. Yadav، نويسنده , , Beerendra S. Yadav، نويسنده , , Suman Dubey، نويسنده ,

  • Issue Information
    هفته نامه با شماره پیاپی سال 2004
  • Pages
    6
  • From page
    131
  • To page
    136
  • Abstract
    An original montmorillonite K-10 clay catalysed cycloisomerisation of salicylaldehyde 4-arylthiosemicarbazones yields 3,4-dihydro-4-hydrazino-2H-benz[e]-1,3-oxazine-2-thiones, which on reductive dehydrazination on alumina-supported copper(II) sulfate readily furnish 3,4-dihydro-2H-benz[e]-1,3-oxazine-2-thiones under solvent-free microwave irradiation. Under the same conditions salicylaldehyde thiosemicarbazones undergo cyclodehydrazination to yield 2H-benz[e]-1,3-oxazine-2-thiones.
  • Keywords
    solvent free , Salicylaldehyde thiosemicarbazones , Mineral supported , Microwaves , Benzoxazine-2-thiones
  • Journal title
    Tetrahedron
  • Serial Year
    2004
  • Journal title
    Tetrahedron
  • Record number

    1084620