نتایج جستجو برای: aza michael reaction
تعداد نتایج: 438931 فیلتر نتایج به سال:
A new strategy has been proposed for the synthesis of an array imidazo[5,1-c][1,4]oxazine chemotypes by using a planned aza-Michael addition in 3-CR heteroring-forming, post-cyclization transformation followed intramolecular fused-heterocycles formation process.
A new chiral Brønsted acid-catalyzed aza-Diels-Alder reaction of cyclic C-acylimines with cyclopentadiene has been developed. The reaction provides optically active aza-tetracycles in good yields with high diastereo- and enantioselectivities under mild reaction conditions.
Graphene oxide was found to be a highly efficient, reusable and cost-effective organocatalyst for the aza-Michael addition of amines to activated alkenes to furnish corresponding β-amino compounds in excellent yields.
A straightforward one-pot route for the synthesis of a new 4-phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one is reported form direct hydrazinolysis triketo ester and hydrazine hydrate in ethanol. 4-Phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one was subjected to aza-Michael addition N-alkylation on reaction with set alkylating agents presence K2CO3. Hydrazinolysis hydrazide conversion thiosemicarbazi...
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