THE SYNTHESIS OF NOVEL POLYCYCLIC HETEROCYCLIC RING SYSTEMS VIA PHOTOCYCLIZATION .15. [1]BENZOTHIENO[3',2'-4,5]THIENO[2,3-C]QUINOLINE, [1]BENZOTHIENO[3',2'-4,5]THIENO[2,3-C][1,2,4]TRIAZOLO[4-3-A]-QUINOLINE, [1]BENZOTHIENO[3',2'-4,5]THIENO[2,3-C]TETRA

摘要

The synthesis of five novel polycyclic heterocyclic ring systems via photocyclization is reported. These are [1]benzothieno[3',2':4,5]thieno[2,3-c]quinoline (1), [1]benzothieno[3',2':4,5]thieno[2,3-c][1,2,4]triazolo[4,3-a]?? quinoline (2), [1]benzothieno[3',2':4,5]thieno[2,3-c]tetrazolo[1,5-a]quinoline (3), thieno [3',2':4,5]thieno[2,3-c][1,2,4]triazolo[4,3-a]quinoline (4), and thieno[3',2':4,5]thieno[2,3-c]tetrazolo[1,5-a]-quinoline (5). The total assignments of the H-1 and C-13 nmr spectra of 1, 4, 5, and 15 were determined by utilizing two-dimensional nmr methods. [References: 11]