A wide array of methoxy-substituted-polynitro-aryl-pyrazole/imidazoles with readily oxidizable −NH 2 /NO 2 / NHNO 2 /diazo functional groups is synthesized. Single crystal X-ray diffraction (XRD) analysis confirms the molecular structure of the compounds. Energetic properties of the synthesized compounds are determined by theoretical and experimental studies. Most of the compounds are thermally stable and insensitive to impact and friction. Some of the molecules possess better detonation velocity and detonation pressure over TNT.
A straight forward and sustainable approach for 1,2-addition of propiolic acids to ynamide has led to bench stable sp2 (E)-enol-enamides of enediynes & dienynes. The reaction is chemo, regio, as...
Developed
herein is a Cu(II)-catalyzed Meyer–Schuster-type
rearrangement of alkyne-tethered cyclohexadienone for the construction
of m-enone-substituted phenols. The reaction involves
an uncommon 5-exo-trig 1,6-enyne cyclization of alkyne-tethered-cyclohexadienone,
aromatization-triggered C–O bond cleavage, and an electrocyclic
4π-ring-opening of oxetene intermediate. This atom-efficient
transformation provides access to a wide range of synthetically important
α-(m-substituted phenol)-α,β-unsaturated
ketones, featuring a broad scope with labile functional group tolerance.
The gram-scale demonstration makes this transformation synthetically
viable. The synthetic application of α,β-unsaturated ketones
is also showcased.
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