A Simple Route to N,N,N′,N′-Tetrasubstituted 3-Aminothioacrylamides and 3-Aminoselenoacrylamides
作者:Horst Hartmann、Cornelia Heyde、Ines Zug
DOI:10.1055/s-2000-6277
日期:——
In the reaction of N,N-disubstituted 3-amino-3-chloropropenylidenedimethyliminium salts 2 with sodium sulfide or sodium selenide, a simple route for preparing N,N-disubstituted 3-aminothioacryldimethylamides 3 and N,N-disubstituted 3-aminoselenoacryldimethylamides 4, respectively, was elaborated.
Hydride-catalyzed selectively reductive cleavage of unactivated tertiary amides using hydrosilane
作者:Wubing Yao、Rongrong Li、Jianguo Yang、Feiyue Hao
DOI:10.1039/c9cy00924h
日期:——
tertiary amides, including the biologically active aryl-phenazine carboxamides and the challenging non-heterocyclic carbonyl functions, using low-cost hydrosilane as a reducing reagent has been developed. The novel catalyst system exhibits high efficiency and exclusive selectivity, providing the desired amines in useful to excellent yields under mild conditions. Overall, this transitionmetal-free process
On the Vilsmeier formylation of N-aryl-substituted 2-aminothiophenes - a simple route to new thieno[2,3-b]quinolinium salts
作者:Horst Hartmann
DOI:10.3998/ark.5550190.0013.325
日期:——
The Vilsmeier reaction of N-substituted 2-arylamino-thiophenes-5-carboxylic acid or their alkyl derivatives gives rise, depending on the substitution pattern at the thiophene moiety, to the formation of either N-substituted 2-arylamino-thiophene-5-carbaldehydes, corresponding imminium salt precursors, or novel thieno[2,3-b]quinoliniumsalts. These salts are highly reactive towards nucleophiles and
A Simple Route to <i>N-</i>Arylated 2-Aminothiophenes as a New Class of Amorphous Glass Forming Molecules
作者:Horst Hartmann、Peter Gerstner、Dirk Rohde
DOI:10.1021/ol015875c
日期:2001.5.1
[GRAPHICS]By thermal decarboxylation of N-arylated 2-aminothiophene-5-cacrboxylates, a versatile, heavy-metal free method for preparing the title compounds as new class of highly reactive and easily oxidable, amorphous glass forming molecules has been elaborated.