Die niedrige Gesamtausbeute ist eventuell auf die grossere Verdunnung zuruckzufuhren ') Atomkoordinaten, Bindungslangen und -winkel sind beim Cambridge Cr.vstullogruphic Dutu Center, 12 Union Road, Cambridge CB2 IEZ, England, deponiert und konnen dort angefordert werden
Thiocarbonyl-imide aus der Umsetzung von 2,2,4,4-Tetramethyl-3-thioxocyclobutanon mit Aryl-aziden
✍ Scribed by Grzegorz Mlostoń; Jaroslaw Romański; Anthony Linden; Heinz Heimgartner
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- German
- Weight
- 468 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Thiocarbonyl Imides from the Reaction of 2,2,4,4‐Tetramethyl‐3‐thioxocylobutanone and Aryl Azides
Reaction of 2,2,4,4‐tetramethyl‐3‐thioxocylobutanone (6) and 4‐methoxyphenyl, phenyl, and 4‐nitrophenyl azide (7a–c, respectively), at 80°, leads to the 11‐aryl‐5,10‐dithia‐11‐azadispiro[3.1.3.2]undecane‐2,8‐diones 8a–c (Scheme 3), respectively, in 67–83% yield. The structure of 8b has been established by X‐ray crystallography. The formation of the products may be explained via an intermediate thiocarbonyl imide of type D (Scheme 4), generated by the 1,3‐dipolar cycloaddition of the aryl azide with the CS bond of 6 and elimination of N~2~.
📜 SIMILAR VOLUMES
1,3‐Dipoles with a Central S‐Atom from the Reaction of Azides and Thiocarbonyl Compounds: An Unexpected MeS Migration in the Trapping Product of a ‘Thiocarbonyl‐aminide’ with Methyl Dithiobenzoate Reaction of PhN~3~ with __O__‐methyl thiobenzoate (11a) and thioacetate (11c) as well as with the dith
## Ring Transformation of Imidazolidine-2,4-diones ( = Hydantoins) to 4H-Imidazoles in the Reaction with 3-(Dimethylamino)-2,2-dimethyl-2H-azirines At ca. 70°, 3-(dimethylamino)-2,2-dimethyl-2H-azirine (1) and 5,s-disubstituted hydantoins 4 in MeCN or i-PrOH give 2-(l-aminoalkyl)-5-(dimethylamino)
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-
## Ring-Transformations in the Reaction of 3-(Dimethylamino)-2,2-dimethyl-2H-azirines with 1-Substituted Imidazolidine-2,4,5-triones Reaction of 1-substituted imidazolidine-2,4,5-triones ( = N-substituted parabanic acids; 2) and 3-(dimethylamino)-2,2-dimethyl-2H-azirine (1) in i-PrOH or MeCN at r