## Abstract Die Alkylisocyanate **1a** und **b** treten mit den Aminoazirinen **2a** bzw. **b** zu [3: 1]‐Addukten zusammen, deren Spiro‐Struktur **6** durch die Röntgenstrukturanalyse von **6a** belegt ist. Das sterisch gehinderte Isocyanat **1c** bildet mit **2b** dagegen nur das [1: 1]‐Addukt **
Dipolare (1:1)-Addukte aus der Reaktion von 3-Amino-2H-azirinen mit 1,3,4-Oxadiazol- und 1,3,4-Thiadiazol-2(3H)-onen
✍ Scribed by Simon M. Ametamey; Beverly R. Vincent; Heinz Heimgartner
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- German
- Weight
- 955 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Reaction of 3-(Dimethylamino)-2H-azirines with 1,3-Thiazolidine-2-thione Reaction of 3-(dimethylamino)-2H-azirines 1 and 1,3-thiazolidine-2-thione (6) in MeCN at room temperature leads to a mixture of perhydroimidazo[4,3-b]thiazole-5-thiones 7 and N-[ 1 -(4,5-dihydro-l,3-thiazol-2-yl)alkyI]-N,N
190, CH-8057 Ziirich (23.V.90) ~~ Ring Enlargements and Ring Contractions in the Reaction of 1,3-0xazolidine-2,4-diones and 1,3-Thiazolidine-2,4-dione with 3-Amino-W-azirines The reaction of 3-amino-W-azirines 1 and 1,3-oxazolidine-2,4-diones 2 in MeCN at room temperature leads to 3,4-dihydro-3-(2-
**Synthesis of 4‐Amino‐2‐aryl‐2,4‐dihydro‐3__H__‐1,2,4‐triazol‐3‐onen** The title compounds **10** are prepared in a multistep reaction sequence starting with alkyl 2‐arylhydrazono‐2‐chloracetates **3** and aldehyde hydrazones **4.**
Ring Enlargement of 1,2-Thiazol-3(2H)-one-l,l-dioxides and 3-Amino-2H-azirines to 4H-1,2,S-Thiadiazocin-6-one-l, 1-dioxides Reaction of 3-amino-2H-azirines 2 with the 1,l-dioxides 4 and 7 of 1,2-thiazol-3(2H)-ones and 1,2-thiazolidin-3-ones, respectively, in i-PrOH at room temperature leads to 4H-1
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-