2-Phenyl-1H-benzimidazole-5-sulfonic acid prepared from 3,4-Diaminobenzenesulfonacid and its use in the cosmetic compositionsA process for the preparation of 2-phenylbenzimidazole-5-sulphonic acid, characterized in that 3,4-diaminobenzenesulphonic acid is reacted at a pH between 4 and 7 in ...
1-oxy-3-acetyl-6-methyl-cyclohexene-(5)dione-(2,4) (DEHYDRO-ACETIC ACID) 8-hydroxyquinoline (8-QUINOLIN0L) 2-dimethylamino-6-methyl-5-n-butyl-4-hydroxy-pyrimidine methyl-N-benzimidazole-2-yl-N-(butylcarbamoyl)carbamate (BENOMYL) 2-ethylamino-6-methyl-5n-butyl-4-hydroxypyrimidine ...
5, 1988, pp.: 563-564, “Activated nitriles in heterocyclic synthesis of thiazinone, quinazolinone and benzimidazole derivatives” by N. Sobhy Ibrahim et al. Tetrahedron, vol. 52, No. 31 , pp. 10389-10398, (month unavailable) 1996, “Double Diastereoselective Glucosidation of Cyclic ...
S. J. Yan et al., “Potential causal prophylactic antimalarial agents. Synthesis of quinoxaline, benzimidazole, and alkoxybenzene derivatives containing a novoldiamine moiety”, J. Heterocycl. Chem., 297-300, (1978). Primary Examiner: SACKEY, EBENEZER O ...
Disclosed is a method for the preparation of 2-phenylbenzimidazole-5-sulfonic acid, characterized in that 3,4-diaminobenzene sulfonic acid at a pH value between 4 and 7 in aqueous solution with 0.9 to 1.5 mol of benzaldehyde per mole of 3 , 4-diaminobenzenesulphonic acid and with 1.0 to ...
2-Phenyl-5-benzimidazol-2'-yl-furanes of the formula (1) in which R1 is a sulphonic acid group or an ester or amide thereof, a carboxylic acid group or an ester or amide thereof, a cyano group, a trifluoromethyl group or an alkyl- or arylsulphonyl group, R2 is alkyl having 1 ...
PROCESS FOR PREPARING 2-CARBALKOXYAMINO-BENZIMIDAZOLE-5/6/-SULPHONIC ACID PHENYL-ESTER WITH ANTHELMINTIC EFFECT2-Carbalkoxyamino-benzimidazolyl-5(6)-sulfonic acid phenyl esters are disclosed as well as a process for their manufacture. The new compounds have valuable chemotherapeutic properties and are...
The invention concerns a process for preparing a thiazolo[3,2- a] benzimidazole of formula I ##STR1## in which formula n is 1 or 2, and R. sub.1 is hydrogen, lower alkyl, lower alkoxy, trifluoromethyl or halo, or a salt thereof which comprises dehydrating a compound of formula II,...
or a salt thereof wherein n and R, are as defined above, and COOR is an acid or ester function in the presence of an acid selected from sulphuric, sulphonic and phosphoric acid or mixtures thereof and if desired or required an inert solvent provided that if water is present then the amo...