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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Publication of ES296396A1publicationCriticalpatent/ES296396A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Abstract
"Process for obtaining heterocyclic compounds", especially 1,4-benzodioxane derivatives of the general formula ** (See formula) ** wherein R1 represents hydrogen or a lower alkyl radical; R 2 represents hydrogen or an alkyl radical; R3 represents an alkyl, alkenyl or aralkyl radical, any of which may be optionally substituted, and wherein the benzene ring A may be optionally substituted by one or more halogens or alkyl radicals, or by the group -CH = CH-CH = CH- which together with the group = CH-CG = of the ring A forms a benzene ring, and the esters thereof, and the salts thereof, but excluding the compounds of the above formula in which the ring A does not carries any additional substituent, and, or R1 or R2 represent both hydrogen and R3 represents the methyl, ethyl, n-propyl, isopropyl or n-butyl radical, or R1 represents hydrogen, and R2 and R3 both represent the methyl, ethyl radical, n-propyl, isopropyl, n-butyl or isobutyl, or R 1 represents hydrogen, R 2 represents methyl radical and R 3 represents the ethyl or n-propyl radical, or R 2 represents the methyl radical, R 2 represents hydrogen and R 3 represents the methyl or ethyl radical , or R1 represents the methyl radical and R2 and R3 both represent the methyl or ethyl radical- and the salts thereof, characterized by comprising the interaction of a compound of the general formula ** (See formula) ** wherein A has the meaning indicated above, R4 represents the group -CH0 CHR1 or -CHOH. CHR1X, in which R has the meaning already indicated and X represents a halogen atom, for example a chlorine or bromine atom, with an amine of formula NHR2R3, in which R2 and R3 have the meanings indicated above. (Machine-translation by Google Translate, not legally binding)
ES0296396A1963-02-131964-02-13Procedure for the obtaining of heterocyclic compounds (Machine-translation by Google Translate, not legally binding)
ExpiredES296396A1
(en)
Procedure for the preparation of substitute 2- (2ยบ-hydroxypenyl) -benzo-triazol compounds (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of aliphatic derivatives of 4- (phenyl) -piperidine replaced (Machine-translation by Google Translate, not legally binding)