✍ Scribed by Albert Lévai
No coin nor oath required. For personal study only.
New 4‐aryl‐2,3‐dihydro‐2‐styryl‐1,5‐benzothiazepines 8–13 have been synthesized by an acid catalyzed reaction of 2‐arninothiophenol (1) and (E,E)‐cinnamylideneacetophenones 2–7. Ring contraction of 1,5‐benzothiazepines 8–13 provided 2,2‐disubstituted 3‐acetyl‐2,3‐dihydrobenzothiazoles 14–19 under acetylating conditions.
📜 SIMILAR VOLUMES
The reaction of dibenzylideneacetones or E,E-cinnamylidene-acetophenones and hydrazine hydrate provided 1-propionyl derivatives of 5-aryl-3-styryl-2-pyrazolines and 3-aryl-5-styryl-2-pyrazolines. These unsaturated ketones afforded 1-(2-carboxyphenyl) or 1-(4-carboxyphenyl) 5-aryl-3-styryl-2-pyrazoli
## Abstract New 3‐aryl‐5‐styryl‐2‐pyrazolines have been synthesized by the reaction of (__E,E__)‐cinnamylideneace‐tophenones with hydrazines. These 2‐pyrazolines have also been converted into the corresponding pyrazoles by oxidation with chloranil. Structures of all new compounds have been elucidat