N-Phenacylpyridinium Bromides as Acid Corrosion Inhibitors
摘要:
The inhibiting effect of N-phenacylpyridinium bromides with the amide group in the pyridine ring on corrosion of carbon steel in 3 M sulfuric acid is studied. A relationship between the nature of substituents at the amide group and the corrosion-protective properties of the compounds studied is revealed. Compounds demonstrating high protection efficiency in acid solutions at elevated temperatures are found.
N-Phenacylpyridinium Bromides as Acid Corrosion Inhibitors
摘要:
The inhibiting effect of N-phenacylpyridinium bromides with the amide group in the pyridine ring on corrosion of carbon steel in 3 M sulfuric acid is studied. A relationship between the nature of substituents at the amide group and the corrosion-protective properties of the compounds studied is revealed. Compounds demonstrating high protection efficiency in acid solutions at elevated temperatures are found.
Compounds having an activity to enhance the expression of apoAI are provided, which are used as medicaments.
Compounds of formula (I):
1
in which ring A and Ar
1
are independently a monocyclic or bicyclic aromatic carbocyclic group or aromatic heterocyclic group, each of which may be optionally substituted, or the like; R is a hydrogen or the like; Z is oxygen or the like; Y
1
and Y
2
are a hydrogen, a lower alkyl, or the like; n is an integer of 0 to 2; the broken line is the presence or absence of a bond; and the wavy line represents a cis- or trans-geometrical isomerism with respect to the double bond; are disclosed.
Compounds having an activity to enhance the expression of apoAI are provided, which are used as medicaments.
Compounds of formula (I):
in which ring A and Ar
1
are independently a monocyclic or bicyclic aromatic carbocyclic group or aromatic heterocyclic group, each of which may be optionally substituted, or the like; R is a hydrogen or the like; Z is oxygen or the like; Y
1
and Y
2
are a hydrogen, a lower alkyl, or the like; n is an integer of 0 to 2; the broken line is the presence or absence of a bond; and the wavy line represents a cis- or trans-geometrical isomerism with respect to the double bond; are disclosed.