7 research outputs found
N-Methylation of 2-Furylhenzothiazoles. The Influence of Substituents on the Rate of Quaternization
Quaternization of several 2-furylbenzothiazoles with dimethylsulphate
in dioxane has been studied. The noticeable substituent
dependence of the rate of methylation has been observed. The
substituents (CHa, Br, Cl) have been located at position 5 of the
furane nucleus and/or position 6 of the benzo-ring
N-Methylation of 2-Furylhenzothiazoles. The Influence of Substituents on the Rate of Quaternization
Quaternization of several 2-furylbenzothiazoles with dimethylsulphate
in dioxane has been studied. The noticeable substituent
dependence of the rate of methylation has been observed. The
substituents (CHa, Br, Cl) have been located at position 5 of the
furane nucleus and/or position 6 of the benzo-ring
Synthesis and Photochemical Behaviour of Substituted 3,4-furandicarboxdianilides
Same substituted 3,4-furandicarboxdianilides were prepared
from the corresponding substituted anilines and 3,4-furandicarboxylic
acid dichloride. All compounds were exposed to UV irradiation
in methanolic solution, but under the conditions applied only p-chloro- substituted dianilide dehydrocyclized to the corresponding furo-bis-quinolone
Thioamides. XV. Some New Substituted 2-(2- or 3-Furyl)benzothiazoles. The Preparation and Properties
A number of 2-substituted benzothiazoles with 2-furyl- (Figure
1.) or 3-furyl- (Figure 2.) group as a substituent were prepared
by the oxidative cyclization of corresponding thioanilides. Some of
the prepared benzothiazoles were converted to N-methyl derivatives
with dimethylsulphate. The compounds were isolated as quarternary
salts. The influence of substituents on the basicity of the benzothiazole
nucleus and on the rate of quarternization was established
Thioamides. XV. Some New Substituted 2-(2- or 3-Furyl)benzothiazoles. The Preparation and Properties
A number of 2-substituted benzothiazoles with 2-furyl- (Figure
1.) or 3-furyl- (Figure 2.) group as a substituent were prepared
by the oxidative cyclization of corresponding thioanilides. Some of
the prepared benzothiazoles were converted to N-methyl derivatives
with dimethylsulphate. The compounds were isolated as quarternary
salts. The influence of substituents on the basicity of the benzothiazole
nucleus and on the rate of quarternization was established