1.2.4- Dithiazole-3-thione

Dithiazole-3-thiones alkylation, 6, 923 nucleophilic attack, 6, 915 photoreactions... 

Several workers have studied the reactions of l,2-dithiole-3-thiones and related systems with acetylenic esters.231,241-244 The thiones (395), for example, react with DMAD to give 2-thioacylmethylene-l,3-dithioles (396), which may arise through a concerted 1,3-dipolar addition to the S—C=S moiety. These adducts undergo further reaction with DMAD, yielding thiopyran-4-spiro-2 -(l,3-dithioles) (397) (Scheme 62).237 Similarly, the reaction of 5-phenyl-1,2,4-dithiazole-3-thione (398) with... 

The thermolysis of 5-Ph-l,2,4-dithiazole-3-one(thione) results in benzonitrile sulfide and 5-amino-1,2,4-dithiazole-3-thione 5 loses CS2 at 184°C <1996CHEC-II(4)453>. When a CDC13 solution of 1,2,4-oxathiazoline 20 (Ar=Ph, R= Buc) was heated at 100°C for 12 h in a sealed NMR tube, a 1 1 mixture of benzonitrile and pivaldehyde along with elemental sulfur were formed (Equation 4) <2003TL2517, 2004HAC175>. 

The starting material, which can also be considered as an a- (1,3 - dithiol-3 -ylidene) thioketone, is obtained by reacting alkynes with l,2-dithiole-3-thiones. These compounds when heated with elemental sulfur or sulfur-containing catalysts rearrange to l,6,6aA -trithiapentalenes as shown in equation (21). A mechanism has been suggested for this reaction (72CC540) but it should be noted that in the reaction of alkynes on l,2-dithiole-3-thiones or on 1,2,4-dithiazole-3 -thiones the final l,6,6aA 4- trithiapentalene is often obtained directly <7lAHC(l3)l6l,P. 191,199). 

Imidazo[2,1 -c][ 1,2,4]dithiazole-3-thione H NMR, 6, 904 (71TL1317) 4H-Imidazol-5-amine, 4-cyano-4-methyl- H NMR, 5, 16 (83UP40100)... 

Cl5H12N2OS, 2-Phenylamino-5-phenylthiazolin-4-one, 39B, 275 Cl5H12N2OS, 3-p-Tolyl-4-oxo-5-phenyl-1-thia-2,3-diazoline, 40B, 353 Cl5H12N2S, Phenothiazine-10-propionitrile, 39B, 276 C15H12N4S3 0.7 H2O, 5-(1,2-Diphenylguanidino)-3H-1,2,4-dithiazole-3-thione hydrate, 44B, 363... 

Amino-3Yi 1,2,4 dithiazole-3-thione, 9CI. Isoperthiocyanic acid. 3-Imino l,2,4-dithiazolidine-5-thione. Xanthan hydride [6846-35-1]... 

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