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In an analogous manner there are obtained: from p-dimethylamino-benzaldehyde, acetoacetic acid ethyl ester and ammonia, 4-(4’-dimethylaminophenyl) 2,6 - dimethyl - 3,5 - dicarbethoxy - 1,4-dihydropyridine M.P. 159° C.; from p-dimethylamino-benzaldehyde, acetoacetic acid iso propyl ester and ammonia, 4-(4’-dimethylamino phenyl) - 2,6 - dimethyl-3,5-dicarboisipropoxy-1,4 dtnv dropyridine, M.P. 164° C.; from p-dimethylamino-benzaldehyde, acetoacetic ac d sec.-butyl ester and ammonia, 4-(4’-dimethylamino phenyl) - 2,6 - dimethyl - 3,5-dicarbo-sec.-butoxy-1,4 dihydropyridine, M.P. 125° C.; from p-dimethylamino-benzaldehyde, acetoacetic acid ethyl ester and ammonia, 4-(4’-dimethylaminophenyl) 2,6-dimethyl-3,5-dicarbo-isobutoxy-1,4-dihydropyridine M.P. 104° C.-.106° C.; from diethylamino-benzaldehyde, acetoacetic acid ethyl ester and ammonia, 4-(4’ - diethylaminophenyl)-2,6 d methyl - 3,5 - dicarbethoxy - 1,4 - dihydropyridine M.P. 159° C.; from diethylamino-benzaldehyde, acetoacetic acid isopio pyl ester and ammonia, 4-(4’-diethylaminophenyl) -2 6 dimethyl - 3,5 - dicarbo-isopropoxy-1,4-dihydropyridine M.P. 192° C.; from m-nitro-p.dimethylamino-benzaldehyde, acetoacetic acid methyl ester and ammonia, 4-(3’-nitro-4’-dimethyl amffiophenyl) - 2,6 - dimethyl-3,5-dicarbomethoxy- 1 4 dihydropyridine, M.P. 214° C. to 216° C. |
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yzhang1986
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2楼2009-11-16 16:04:40
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??????????????????????????? ??????????-???????-?????,???????????????????4-(4??-?????????) 2,6-????-3,5-?????????-1,4-??????????????159???????-???????-?????,?????????????????????0?2 4-(4??-?????????)-2,6- ?????-3,5-??????????-1,4-??????????????164?? |
3楼2009-11-16 16:53:48
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