2-Mercapto-6-methyl

Oxazol 4-Aminocarbonyl-5-mercapto-2-methyl- E8a, 925 [CljC = C(CO -NH2)-NH-CO-CH3 +NaSH]... [Pg.203]

Isothiazole, 4-aryl-3-hydroxy-5-mercapto-methylation, 6, 160 synthesis, 6, 166... [Pg.682]

In Scheme 39, new pathways to fused [l,4]thiazines are shown. The oxadiazolone derivative with a mercapto-methyl side chain (308) was reported to react with maleic anhydride to the fused product 309 in high yield <1996M549>. The acetylene substituted triazole 310, when reacted with 2molarequiv of phenylisocyanate, afforded a polysubstituted triazolothiazine derivative 311 via a fairly complicated reaction pathway <1998CJC635>. [Pg.711]

Authentic poly(thioformaldehyde) was prepared much later by Harmon (5) by removal of hydrogen sulfide from methanedithiol and from bis(mercapto-methyl)sulfide. [Pg.75]

The S -(-)-a-[(acetylthio)methyl]phenylpropionic acid (21) is a key chiral intermediate for the neutral endopeptidase inhibitor (22) [48], We [44] have demonstrated the lipase-catalyzed stereoselective hydrolysis of thioester bond of racemic a-[(acetylthio)methyl]phenylpropionic acid (21) in organic solvent to yield A-(+)-a-[(mercapto)methyl]phenylpropionic acid (23) and Y-(-)-(21). Using lipase PS-30, the Y-(-)-(21) was obtained in 40% reaction yield (theoretical max. 50%) and 98% e.e. (Fig. 9). [Pg.152]

Mercapto-methyl-thiazoline Allylglycidylether Mild cation... [Pg.587]

Mercapto-methyl-imidazole Allylbromide Cationic effect... [Pg.587]

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 ... [Pg.341]

EINECS 220-912-4 HSDB 5905 3-Mercaptopropionic acid methyl ester Methyl mercaptopropionate Methyl 3-mercaptopropionate NSC 137814 Propanoic acid, 3-mercapto-, methyl ester. Liquid bp14 = 54-55° d = 1.085. [Pg.409]

Magnesium thioglycolate Acetic acid, mercapto-, methyl ester. See Methyl thioglycolate... [Pg.36]

CAS 2365-48-2 EINECS/ELINCS 219-121-7 Synonyms Acetic acid, mercapto-, methyl ester Mercaptoacetic acid methyl ester Methylmercaptoacetate Methyl-2-mercaptoacetate Thioglycolic acid, methyl ester... [Pg.2692]

The action of hydrazine on isorhodanine (364 R = H) or its 5-ethyl homologue (364 R = Et) proceeds in three stages (Scheme 22) The hydrazine addition compound (365) is isolable at 0 but is converted at ambient temperatures, with loss of hydrogen sulphide, into the 4-hydrazonothiazolidin-2-one (366) at higher temperatures, 5-mercapto-methyl(or mercaptopropyl)-l,2,4-triazolin-3-ones (367) are formed as the final products by rearrangement. The action of aromatic aldehydes on (366) yields the expected 4-iV-arylidenehydrazono- (368) and 4-arylidene-hydrazono-5-arylidene analogues (369) successively. Dimerization of (366) to (370) is effected by acids. ... [Pg.648]

Monomer 1 1,3 oxathiolone Monomer 2 2,2 mercapto methyl oxirane Monomer 3 1,3 dioxa 6, thiocane Monomer 4 1,3 dioxa 6,7 dithionane Reprinted with permission from T.S. Radhakrishnan and M.R. Rao, Journal of ... [Pg.24]

The nucleophUic reactivity in neutral medium has been used extensively to prepare various thioethers of thiazole (122). In acidic medium, alkylation may be performed with alcohols (123, 124). An unexpected reaction encountered was the decarboxylation of 2-mercapto-4-methyl-5-thiazolecarboxyhc acid (60) when treated with butyl alcohol under acidic conditions (Scheme 27) (123). Reaction between A-4-thiazoline-2-thione... [Pg.392]

Ethyl-cf-chloroacetoacetate gives 5-carbethoxy-4-methyl-2-thiazole thiol (387), while 3-chloro-2,4-pentanedione affords the 2-mercapto-4-methyl-5-thiazolylmethylketone in good yield (74%) (387). [Pg.264]

The cyclization of a-mercaptoketones with ammonium thiocyanate leads to the corresponding 2-mercaptothiazoles (144). For example, 2-mercapto-3-pentanone in ethereal solution with sulfuric acid gives 4-ethyl-5-methyl-2-mercaptothiazole (10), Ri = SH, R2 = Et, R3 = Me, when allowed to stand for 3 hr without heating with ammonium thiocyanate. [Pg.293]

Table 11 summarizes the main results on the tautomerism of mono-hydroxy-, -mercapto-, -amino- and -methyl-azines and their benzo derivatives, in water. At first sight the equilibrium between 2-hydroxypyridine (71) and pyridin-2-one (72) is one between a benzenoid and a non-benzenoid molecule respectively (71a 72a). However, the pyridinone evidently... [Pg.23]

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