PREPARATIONS AND TEMPLATE CYCLOTETRAMERISATIONS OF 2,1,3-BENZOTHIA(SELENA)DIAZOLE-5,6-DICARBONITRILES

Authors
MORKVED EH NESET SM BJORLO O KJOSEN H HVISTENDAHL G MO F
Citation
Eh. Morkved et al., PREPARATIONS AND TEMPLATE CYCLOTETRAMERISATIONS OF 2,1,3-BENZOTHIA(SELENA)DIAZOLE-5,6-DICARBONITRILES, Acta chemica Scandinavica, 49(9), 1995, pp. 658-662
Citations number
15
Categorie Soggetti
Chemistry,Biology
Journal title
Acta chemica Scandinavica → ACNP
ISSN journal
0904213X
Volume
49
Issue
9
Year of publication
1995
Pages
658 - 662
Database
ISI
SICI code
0904-213X(1995)49:9<658:PATCO2>2.0.ZU;2-C
Abstract
2,1,3-Benzothiadiazole-5,6-dicarbonitril Ib, and the corresponding sel ena derivative 2b, have been prepared in multistep syntheses. Template cyclotetramerisations with copper or magnesium powder in an inert atm osphere give the thiadiazole substituted phthalocyanines 4 in good yie lds and the selenadiazole analogues 5a and 5b + 5c (3:7 mixture) in fa ir yields. Compounds 5 are the first examples of phthalocyanines with a selenium-containing substituent.