Isobutyl acetate nitrite

Diazotization of 2-aminopyrazine with nitrous acid in dilute or concentrated sulfuric acid gave 2 hydroxypyrazine (to 67% yield) (86, 477, 720, 818). Many such conversions have been described, mostly using nitrosylsulfuric acid in concentrated sulfuric acid solution. Preparations of hydroxypyrazines from the aminopyrazines are summarized as follows 2-hydroxy-3-methylpyrazine (sodium nitrite in concentrated sulfuric acid-acetic acid) (681), 2Jiydroxy-3,5-dimethylpyrazine (aqueous nitrous acid, then at 60°) (524), 3-hydroxy-2,5-dimethylpyrazine (477), 2,5-diethyl-3-hydroxypyrazine (aqueous nitrous acid) (478), 2-hydroxy-6-phenyl-pyrazine (365a), 24iydroxy-3,5-diphenylpyrazine (nitrous acid in N hydrochloric acid) (524), 3-hydroxy-2,5-diphenylpyrazine (282), 2-s-butyl-3-hydroxy-5-isobutyl-pyrazine (93), 5TS-butyl-3 hydroxy-2-isobutylpyrazine (92, 536), 2,5-di-s-butyl-3-hydroxypyrazine (89, 720), 3-hydroxy-2-isobutyl-5-isopropylpyrazine (103, 525), 2,3-dihydroxypyrazine (from 2 amino-3-hydroxypyrazine) (757, 1055) and its... 

Pentanone Butyl formate Ethyl propionate Isobutyl formate Isopropyl acetate Methyl butyrate Methyl isobutyrate Propyl acetate Propyl acetate Isoamyl nitrite terJ-Amyl alcohol Isoamyl alcohol 3-Methyl-2-butanol... 

C4H9N O2 C4H10O Isobutyl Nitrite Acetaldehyde dimethyl acetal 67.1 64.3 Nonazeotrope 280... 

Methyl acetate Isopropyl alcohol Propyl alcohol Ethyl acetate Methyl propionate Propyl formate Butyl nitrite Isobutyl nitrite Butyl alcohol... 

Isobutyl nitrite Butyl alcohol scc-Butyl alcohol t r -Butyl alcohol Ethyl ether Isobutyl alcohol Ethyl sulfide Pyridine Isovaleraldehyde 3-Methyl 2-butanone Isobutyl formate Isopropyl acetate Methyl isobutyrate Isoamyl nitrite tert-Amyl alcohol Isoamyl alcohol... 

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