squaramide
National Institutes of Health
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Bifunctional squaramides have emerged as powerful hydrogen-bonding catalysts for promoting a wide array of useful asymmetric…
A one-pot sequential bicatalytic asymmetric Michael addition/hydroalkoxylation provides a new series of pyrano-annulated…
Exceptionally powerful anion receptors have been constructed by placing squaramide groups in axial positions on a steroidal…
A joint experimental-theoretical study of a bifunctional squaramide-amine-catalyzed Michael addition reaction between 1,3-dioxo…
Masked acyl cyanide (MAC) reagents are shown to be effective umpolung synthons for enantioselective Michael addition to…
In this work, we compare the anion-binding capabilities of receptors 1-5, characterized by similar structures, but possessing…
Horiguchi and Kandatsu’s isolation of 2-amino ethylphosphonic acid from the rumen protozoa in 1959 demonstrated for the first…
A series of squaramide-based organocatalysts were facilely synthesized and applied as hydrogen bonding organocatalysts in the…
Catalytic enantioselective alpha-hydrazination of 1,3-dicarbonyl compounds with azodicarboxylates was investigated in the…
The interaction of a neutral squaramide-based receptor, equipped with two 4-nitrophenyl substituents (R(sq)), with halides and…