Friedel-Crafts acylation with N-(trifluoroacetyl)-.alpha.-amino acid chlorides. Application to the preparation of .beta.-arylalkylamines and 3-substituted 1,2,3,4-tetrahydroisoquinolines
Cyclic α-amino acids as precursors for synthesis of 2-amino-3-hetarylpyrrolin-4-ones and their spiro derivatives
作者:Alexey V. Dobrydnev、Tatyana A. Volovnenko、Yulian M. Volovenko、Gennady V. Palamarchuk、Oleg V. Shishkin
DOI:10.1007/s00706-012-0727-3
日期:2012.5
Abstractα-Aminoisobutanoic acid and some representatives of cyclic α-amino acids were converted to corresponding 1-phthalimido- and N-trifluoroacylated acid chlorides. Treatment of 2-(1H-benzimidazol-2-yl)acetonitrile with 1-phthalimidoacid chlorides in DMF unexpectedly gave 2-(1H-benzimidazol-2-yl)-3-(dimethylamino)-2-propenenitrile. On the other hand, the reaction of hetarylacetonitriles with N-trifluoroacylated
摘要将α-氨基异丁酸和一些环状α-氨基酸代表转化为相应的1-邻苯二甲酰亚胺基和N-三氟酰化酰氯。用1-邻苯二甲酰氯在DMF中处理2-(1 H-苯并咪唑-2-基)乙腈意外地得到2-(1 H-苯并咪唑-2-基)-3-(二甲基氨基)-2-丙烯腈。另一方面,杂芳基乙腈与N的反应-三氟酰化酰氯得到所需的(3-氰基-2-氧代-3-杂芳基丙基)-2,2,2-三氟乙酰胺,其经三氟乙酰化后提供目标2-氨基-3-杂芳基吡咯啉-4-酮。苯甲酰氯对苯并咪唑基氨基吡咯啉酮的酰化作用导致形成3-苯甲酰基-2,3-二氢-5-苯基-1 H-苯并[4,5]咪唑并[1,2- c ]吡咯并[3,2- e ]嘧啶-1-酮。 图形概要
[DE] NEUE SUBSTITUIERTE THIOPHENCARBONSÄUREAMIDE, DEREN HERSTELLUNG UND DEREN VERWENDUNG ALS ARZNEIMITTEL<br/>[EN] NOVEL SUBSTITUTED THIOPHENECARBOXAMIDES, THEIR PRODUCTION AND THEIR USE AS MEDICAMENTS<br/>[FR] NOUVEAUX THIOPHENE-CARBOXAMIDES SUBSTITUES, LEUR PRODUCTION ET LEUR UTILISATION EN TANT QUE MEDICAMENTS
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2005111029A1
公开(公告)日:2005-11-24
Gegenstand der vorliegenden Erfindung sind neue substituierte Thiophen-2-carbonsäureamide der allgemeinen Formel (I), in der A, und R1 bis R8c wie in Anspruch 1 definiert sind, deren Tautomere, deren Enantiomere, deren Diastereomere, deren Gemische und deren Salze, insbesondere deren physiologisch verträgliche Salze mit anorganischen oder organischen Säuren oder Basen, welche wertvolle Eigenschaften aufweisen.
The present invention relates to new substituted thiophene-2-carboxylic acid amides of general formula
wherein A, and R
1
to R
8c
are defined as in claim 1, the tautomers, the enantiomers, the diastereomers, the mixtures thereof and the salts thereof, particularly the physiologically acceptable salts thereof with inorganic or organic acids or bases, which have valuable properties.
Synthesis of spiro 2-(5-amino-2,3-dihydro-3-oxopyrrol-4-yl)-1,3-dialkylbenzimidazolium chlorides
作者:Alexey V. Dobrydnev、Yulian M. Volovenko、Alexandr V. Turov、Volodymyr V. Medviediev、Oleg V. Shishkin、Tatyana A. Volovnenko
DOI:10.1007/s00706-015-1438-3
日期:2015.6
The interaction of 1,3-dialkyl-2,3-dihydro-1H-benzo[d]imidazol-2-ylidenemethyl cyanides with N-trifluoroacylated acid chlorides gave the desired (3-cyano-2-oxo-3-hetarylpropyl)-2,2,2-trifluoroacetamides that upon detrifluoroacetylation provided the target 2-(5-amino-2,3-dihydro-3-oxopyrrol-4-yl)-1,3-dialkylbenzimidazolium chlorides.[GRAPHICS]
NORDLANDER, J. E.;PAYNE, M. J.;NJOROGE, F. G.;BALK, M. A.;LAIKOS, G. D.;V+, J. ORG. CHEM., 1984, 49, N 22, 4107-4111
作者:NORDLANDER, J. E.、PAYNE, M. J.、NJOROGE, F. G.、BALK, M. A.、LAIKOS, G. D.、V+