Methyl mercapto benzimidazole

Best tear resistance is achieved by a combination of sulfur, thiurams, guanidine-based accelerators, and methyl mercapto benzimidazole (so-called MMBI system). 

Levels of 0.5-1.0 pphr methyl mercapto benzimidazole have been shown to improve resistance to flex cracking of CR vulcanizates, but tend to be scorchy. The zinc salt of MMBI (ZMMBI, Vulkanox ZMB-2) is more effective in this respect. 

The route of synthesis of pantoprazole sodium, as described in US patent 4758579 (1988), is as follows. 2-chloromethyl-3,4 dimethoxypyridinium hydrochloride(I) is condensed with 5-difluoromethoxy-2-mercapto-benzimidazole(H) in ethanolic sodium hydroxide solution to yield 5-(difluoromethoxy)-2-(((3,4-dimethoxypyrolidine-2-yl) methyl) thio)-l/7-benzimidazole)(III). This compound is oxidized during reaction with m-chloroperbenzoic acid in methylene chloride, yielding pantoprazole base (IV). Further reaction with aqueous caustic soda solution gives pantoprazole sodium, which is then purified by crystallization from methanol. The various steps of this synthesis are illustrated in Scheme 1. 

Composition Vistalon 7500,100 N-550 100 Flexon 815, 45 TMQ 1 zinc salt of 4- and 5-methyl-2-mercapto-benzimidazole (ZMMBl) 3 coagent ethylene dimethacrylate (EDMA) 0.5, Perkadox 14-40, 7. ... 

Abstract This presentation is a brief review on the resnlts of our work on iodine interaction with thioamides, selenoamides and amides. The thioamides, benzothia-zole-2-thione (BZT) (1), 6-n-propyl-2-thiouracil (PTU) (2), 5-chloro-2-mercap-tobenzothiazole (CMBZT) (3), N-methyl-benzothiazole-2-thione (NMBZT) (4), benzimidazole-2-thione (BZIM) (5), thiazolidine-2-thione (TZD) (6), 2-mercapto-pyridine (PYSH) (7), 2-mercapto-nicotinic acid (MNA) (8), 2-mercapto-benzoic acid (MBA) (9) and 2-mercapto-pyrimidine (PMT) (10) react with producing three type of complexes of formulae [(HL)IJ(l2) (HL= thioamide and n= 0, 1), [(HL) [I3 ] and [(HL-L)]+[l3 ]. The interaction of seleno-amides, derived from, 6-n-propyl-2-thiouracil (RSelJ) (R= Me- (11), Et- (12), n-Pr- (13) and i-Pr- (14)) with I, have also been studied and produced the complexes [(RSeU)IJ of spoke structure. These complexes are stable in non-polar solvents, but they decompose in polar solvents, producing dimeric diselenide compounds or undertake deselenation. 

Ebenfalls unter Einbeziehung eines Ring-C-Atoms in den zu synthetisierenden Heterocyclus sind 2,4-Dioxo-, 2-Imino-4-oxo- bzw. 2-Oxo-4-thiono-l,3-thiazolidine in der Lage, mit 1,2-Di-amino-benzol Benzimidazole zu bilden, die in 2-Position eine Hydroxy-, eine Mercapto-acetamino- oder eine Mercapto-methyl-Gruppe tragen z. B.1680 ... 

Mercapto-l-methyl-benzimidazole werden in athanolischer Salzsaure unter Heteroaryl-S-Spaltung photolysiert1 ... 

Benzene-4-sulfonic acid, l-hydroxy-2-(2-hydroxy-6-suIfo-l-naphthylazo)-6-(2-hydroxy-l-naphthylazo)-metallochromic indicator, 556 Benzimidazole, 2-(o-hydroxyphenyl)-raercury determination, 532 Betrzoic acid complexes linkage isomers, 186 a-Benzoin oxime in gravimetry, 530 Benzothiazole, hydroxy-in gravimetry, 531 Benzothiazole, mercapto-in gravimetry, 534 Benzothiazole, 2-mercapto-cadmium complexes liquid-liquid extraction, 547 Benzoxazole, 2-(o-hydroxyphenyl)-cadmium determination, 531 Benzylamine, a-methyl-Al,7V-dimethyl-complexes chirality, 199 Berry pseudorotation, 39 Beryllium analysis, 523... 

In this paper, we briefly review the results of our work on the iodine interaction with the thioamides benzothiazole-2-thione (BZT) (1), 6-n-propyl-2-thiouracil (PTU) (2), 5-chloro-2-mercaptobenzothiazole (CMBZT) (3), N-methyl-benzothia-zole-2-thione (NMBZT) (4), benzimidazole-2-thione (BZIM) (5), thiazohdine-2-thione (TZD) (6), 2-mercapto-pyridine (PYSH) (7), 2-mercapto-nicotinic acid (MNA) (8),... 

Mercaptothiophene. See 2-Thienyl mercaptan 4-Mercaptotoluene. See p-Thiocresol a-Mercaptotoluene. See Benzyl mercaptan o-Mercaptotoluene. See o-Thiocresol p-Mercaptotoluene. See p-Thiocresol 2-Mercaptotoluimidazole CAS 53988-10-6 EINECS/ELINCS 258-904-8 Synonyms 2H-Benzimidazole-2-thione, 1,3-dihydro-4(or 5)-methyl- 2-Mercapto-4(5)-methylbenzimidaole Mercaptotolylimidazole MMBI MTI... 

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