@article { author = {}, title = {SELECTIVE CYCLIZATION AND IS OMERIZATION OF 3-PROPARGYLTHIO- 1,2,4- BENZOTRIAZINE TO THIAZOLO [2,3-C] [1,2,4] BENZOTRIAZINE}, journal = {Journal of Sciences, Islamic Republic of Iran}, volume = {10}, number = {1}, pages = {-}, year = {1999}, publisher = {University of Tehran}, issn = {1016-1104}, eissn = {2345-6914}, doi = {}, abstract = {The method cited in the literature for synthesis of 1,2- dihydro 3- thioxo - 1,2,4- benzotriazine 1 was improved .1 was condensed with propargyl bromide to afford 3 - propargylthio – 1,2,4 -benzotriazine 5. Transformation of this compound to 9H-3- methylthiazolo [2,3-c] [1,2,4] benzotriazine ( 3, R = Me) was performed in the presence of Na O Me / MeOH . Orientation of this selective cyclization was ascertained by (N.O.E.) NMR experiment}, keywords = {}, url = {https://jsciences.ut.ac.ir/article_31347.html}, eprint = {https://jsciences.ut.ac.ir/article_31347_4709fe4a9b48f385e75e357c92026ecf.pdf} }