PROCESS FOR PREPARING PHENYL PIPERAZINES
Title compds. (I; R1 = benzyl, C1-6 alkyl-substituted phenyl; R2 = substituted phenyl; R3 = H, C1-4 alkyl; Q=furan, thiopen, oxazole, thiazole; m = 1-3; n = 0-1; when m,n and Q are 2, 0 and thiazol-5-yl, resp., R1 is not Me) were prepd. by redn. of II and III. Thus, 6.67 g (0.3 mol) 5-(4-chloropheny...
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Main Authors | , |
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Format | Patent |
Language | English Korean |
Published |
17.08.1981
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Subjects | |
Online Access | Get full text |
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Summary: | Title compds. (I; R1 = benzyl, C1-6 alkyl-substituted phenyl; R2 = substituted phenyl; R3 = H, C1-4 alkyl; Q=furan, thiopen, oxazole, thiazole; m = 1-3; n = 0-1; when m,n and Q are 2, 0 and thiazol-5-yl, resp., R1 is not Me) were prepd. by redn. of II and III. Thus, 6.67 g (0.3 mol) 5-(4-chlorophenyl)-furanic acid was refluxed with 4.5 ml SOCl2 in 100 ml C6H5 followed by reaction with 4.5 ml (0.03 mol) (Et) 3N and 7.23 g (0.03 mol) N-(3-bromophenyl)-piperazine to give I(R1 = 4-chlorophenyl; Q = furan-2-yl; m = 1; n=0). IHCl was obtained by addn. of I with 5N HCl. |
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Bibliography: | Application Number: KR19810001974 |