No abstract

3‐(2‐Aryl‐2,3‐dihydro‐benzo[b][1,4]thiazepin‐4‐yl)chromen‐2‐ones (2a, e, f) and (Z)‐3‐(2,3‐dihydro‐2‐arylbenzo[b][1,4]thiazepin‐4(5H)‐ylidene)chroman‐2‐ones (3a‐f) have been synthesized by the reaction of 3‐aryl‐1‐(3‐coumarinyl)propen‐1‐ones (1a‐f) with 2‐aminothiophenol in a hot mixture of toluene and acetic acid. Structures of all new compounds and their complete 1H and 13C assignments were achieved applying different one‐ and two‐dimensional nmr experiments in combination with various spectroscopic techniques.

Oxazepines and Thiazepines. Part 44. Reductive Formation of 1,5-Benzothiazepines. -Reaction of substrates (I) with excess 2-aminothiophenol results in an unprecedented formation of 1,5-benzothiazepines having an exocyclic double bond. -(LEVAI*, A.; TOTH, G.; GONDOS, T.; JEKO, J.; BRAHMBHATT, D. I.; Heterocycles 68 (2006) 7, 1319-1324; Dep. Org. Chem., Lajos Kossuth Univ., H-4010 Debrecen, Hung.; Eng.) -Mais 47-188

The reaction of 3-(3-aryl-3-oxopropenyl)chromen-4-ones with 1,2-phenylenediamine resulted in the unexpected formation of 10a-aryl-1,2,10,10a-tetrahydrobenzo-[4,5]-imidazo[1,2-a]pyridin-3-yl(2-hydroxyphenyl)-1-methanones. Their structure elucidation and complete 1H and 13C assignments have been performed by a combination of various one- and two-dimensional NMR experiments.

Multi-membered O,N,S-heterocycles R 0692Oxazepines and Thiazepines. Part 45. Synthesis of Benzo[b][1,4]thiazepines by the Reaction of 3-Aryl-1-(3-coumarinyl)propen-1-ones with 2-Aminothiophenol. -(LEVAI*, A.; JEKO, J.; GONDOS, T.; SIMON, A.; TOTH, G.; J. Heterocycl. Chem. 44 (2007) 6, 1453-1458; Dep. Org. Chem., Univ. Debrecen, H-4010 Debrecen, Hung.; Eng.) -A. Forchert 12-182