The reaction of 2-arylidenecyclohexanones 1 with dithiocarbamic acid gave three of the four possible diastereomers of 4-aryl-4a,5,6,7,8,8a-hexahydro-8a-hydroxy-4H-3,1-benzothiazine-2( 1 H)thiones 2-4. The isomeric composition of the reaction products was found to depend on the quantity of hydrochlor
Synthesis of partially saturated N-substituted 4H-3,1-benzothiazine-2(1H)-thiones
✍ Scribed by Pál Perjési; Pál Sohár
- Publisher
- Springer Vienna
- Year
- 1991
- Tongue
- English
- Weight
- 417 KB
- Volume
- 122
- Category
- Article
- ISSN
- 0026-9247
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## Abstract For Abstract see ChemInform Abstract in Full Text.
Reaction of 4H-3.1-benzothiazine-4-lhiones 1 with S-methylisothiosemicarbazide hydroiodide yields bamino-1.3.4-thiadiazoles 2 insteud of the espected 1.2,4-triazolo[3,2-c]quinazolines. Structures of compounds 2 have been established by mcans of '>C-N M R analysis and X-ray crystallography. 3-Arnino-
Methyl-7-thiono-6,r-dihydro-5 H-dibenz[c, elmepin (3, R1= CH,) : 1,12 g (5 mmol) 6-Methyl-7-oxo-6,7-dihydro-5 H-dibenz[c,e]azepin werden rnit 2,22 g (5 mmol) P,S,, in 40 ml absolutem Pyridin zum Sieden erwarmt. Nach 5 h dosiert man weitere 0,5 g P4Sl0 in 5 ml absolutem Pyridin zu und hydrolysiert na