6533b861fe1ef96bd12c4cc4

RESEARCH PRODUCT

ChemInform Abstract: Photochemical Cyclization of Some Aldehyde Thiosemicarbazones.

Michelangelo GruttadauriaFrancesco BuccheriGiuseppe CusmanoSilvestre BuscemiGiuseppe WerberRenato Noto

subject

chemistry.chemical_classificationchemistry.chemical_compoundchemistryOrganic chemistryGeneral MedicineMethanolRing (chemistry)PhotochemistryAldehyde

description

The photochemical behaviour of some substituted aldehyde thiosemicarbazones 1a-k has been investigated in methanol at 254 nm. Thiosemicarbazones of glyoxil methyl ester 1a-f cyclized to furnish the 3-thioxo- 1,2,4-triazin-5-one 2 ring system. The remaining thiosemicarbazones 1g-j gave 1,2,4-triazoline 4 derivatives.

https://doi.org/10.1002/chin.199232176