2-Mercapto-benzthiazol

Decomposition in alkaline solutions to CH2O and the corresponding salt of 2-mercapto benzthiazol (MBT) (see Section 13.9). 

This product is then treated with acryloyl chloride. The initial step in this case probably involves the acylation of nitrogen on the enamine conjugate addition then completes the formation of the lactam ring (23-5). Treatment of that product with triethyl silane then reduces the ring unsaturation and cleaves the benzylic nitrogen bond on the auxiliary to yield (23-6) as the optically pure tmns isomer. Displacement of bromine with the mercapto benzthiazole (23-7) completes the synthesis of izonsteride (23-8) [25]. 

Solutions of heavy metals can be used in the determination of substances which are generally used in analytical chemistry as organic reagents. Thus, for example, solutions of salts of several heavy metals can be used in the determination of mercapto-benzthiazole,< ) of various oximes (e.g. a-benzoinoxime, sali-cylaldoxime etc.), a-nitroso-j8-naphthol etc. 

HA = High abrasion furnace ISAF = Intermediate super abrasion furnace MOR = 2-(4-morpholinyl mercapto)-benzthiazole Accinox ZC = N-(l,3 Dimethyl butyl)-N-phenyl-p-phenylenediamine Vulkanox HS = Polymerised 1,2 dihydro-2,2,4-trimethylquinoline Accitard RE = N-cyclohexyl thiophthalimide ... 

S-[4-nitaco-beii lBBter] 61231. 2.[ Mercapto-athyl]-Baooharin 87,173. A ydiolonn dea 6-Hethyl-benzthiazol-suilons iiie-(7)-hydrozyinethyIabB 37 1 396. 

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