reported a role of in situ click chemistry to explain bio-orthogonal 1,3-dipolar cycloaddition of azide
and alkynes in HIV-1-Pr inhibition .
Diazide monomers were either presynthesized or formed in consequence of in situ azidation, by interaction of [alpha],[omega]-dibromoalkanes with sodium azide
. The click PEs were obtained using CuBr as a catalyst via SGP by interaction of diester diyne monomers either with presynthesized dangerous diazide monomers or using more safe one-pot synthesis comprising in situ azidation.
For the reaction between benzyl azide
and glycosyl-O-acetylene, the global electron density transfer in the TS1 and TS2 from the glycosyl-O-acetylene to the benzyl azide
is 0.08, 0.02 respectively, for both 1,4 and 1,5 isomers.
in 2010 used CuS[O.sub.4] reduced by sodium ascorbate to catalyze O-acetyl-[alpha]-L-arabinopyranosyl azide
and phenyl acetylene and found yields unsatisfactory at 54% .
Substituted alkyne (0.352 mmol, 1 eq.) was added to a solution of azide
8 (0.352 mmol, 1 eq.) in a 1:9 mixture of DMSO (0.5 mL) and [H.sub.2]O (4.5 mL).
In this case, silver chloride by itself can easily catalyze the cycloaddition of diverse alkynes and azides
in good yields.
The regioselective formation of (Beta)- hydroxy azides
or (Beta)- hydroxy thiocyanates from epoxides is an important reaction in medicinal and organic chemistry.
Piermarini, Compressibility of Inorganic Azides
As a former director of engineering of a defense-products company, I'm very aware of the explosive nature of sodium azide
("A deadly threat in undeployed airbags," SN: 4/15/00, p.
The cinnamyl azides
, 2-azidoethyl cinnamate 6 and N-(2-azidoethyl) cinnamide 7 (Scheme 1), were obtained in good yields by condensing cinnamoyl chloride with either 2-azidoethanol or 2-azidoethanamine in pyridine/C[H.sub.2] [Cl.sub.2] .
Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition (CuAAC), which occurs between an azide
and an alkyne to give 1,2,3-triazole ring [30, 31], has emerged as a powerful tool in the preparation of versatile macromolecular structures when used in conjunction with controlled/living radical polymerization techniques [9, 32].
After aromatization and complexation, the respective meso-substituted BODIPY was obtained, yielding an azido-BODIPY after reaction with sodium azide
[51, 52] (Figure 26).