1984
DOI: 10.1002/chin.198411200
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ChemInform Abstract: 7‐SUBSTITUTED BENZO(B)THIOPHENES AND 1,2‐BENZISOTHIAZOLES. PART 1. HYDROXY‐ OR METHOXY‐DERIVATIVES

Abstract: Das aus o‐Vanillin (I) erhältliche Thiocarbamat (II) lagert sich thermisch (nach Newman‐Kwart) in das Isomere (III) um, das über den Mercapto‐benzaldehyd (IV) und die Säure (V) in die Benzothiophencarbonsäure (VIa) übergeführt wird.

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“…16,17 This reaction proceeds via a sulphenamide intermediate by the reaction of the 2-thio-pyridine analogue with chloramine (formed in situ from sodium hypochlorite and ammonia). 18,19 3-Amino-5-bromo-isothiazolo [5,4-b]pyridine 7 was a key intermediate for library synthesis around the isothiazolo [5,4-b]pyridine core. The sequence that was followed depends on the need in the SAR study.…”
Section: Synthesis Of Isothiazolo[54-b]pyridines 10mentioning
confidence: 99%
“…16,17 This reaction proceeds via a sulphenamide intermediate by the reaction of the 2-thio-pyridine analogue with chloramine (formed in situ from sodium hypochlorite and ammonia). 18,19 3-Amino-5-bromo-isothiazolo [5,4-b]pyridine 7 was a key intermediate for library synthesis around the isothiazolo [5,4-b]pyridine core. The sequence that was followed depends on the need in the SAR study.…”
Section: Synthesis Of Isothiazolo[54-b]pyridines 10mentioning
confidence: 99%