77924-17-5Relevant academic research and scientific papers
Rapid cesium fluoride catalyzed synthesis of 5-aryloxy-1-phenyl-1htetrazoles via nucleophilic aromatic substitution
Khan, Khalid Mohammed,Fatima, Itrat,Perveen, Shahnaz,Saad, Syed Muhammad
, p. 389 - 394 (2021/09/07)
A nucleophilic aromatic substitution via a new and facile cesium fluoride catalyzed synthetic approach to get 5-aryloxy-1-phenyl-1H-tetrazoles was developed. Dual usage of cesium fluoride as a nucleophilic catalyst as well as an electrophilic catalyst aff
Metal-assisted reactions. Part 26.1 Catalytic reactivity and ether bond lengths in aryloxytetrazoles and aryloxypseudosaccharins
Alves, Jose A. C.,Barkley, James V.,Brigas, Amadeu F.,Johnstone, Robert A. W.
, p. 669 - 677 (2007/10/03)
X-Ray structure determinations on a variety of aryloxytetrazoles 1 and aryloxypseudosaccharins 4 have shown that the central C-O-C ether linkage is remarkable in having one very long C-O bond and one very short one. The central C-O-C bond angle is close t
Tetrazoles. 33. New method for obtaining functionally substituted tetrazoles
Gol'tsberg,Koldobskii
, p. 1300 - 1304 (2007/10/03)
The interaction of 5-methylsulfonyl-1-phenyltetrazole with C-, N-, and O-nucleophiles at 18-20°C gives high yields of 1-phenyltetrazoles that are functionally substituted on the carbon atom of the heteroring. Prospects are examined for the use of 5-methyl
Tetrazoles. XXXI. Phase-Transfer Reactions of 1-Substituted Tetrazole-5-thiones and Their Derivatives
Gol'tsberg,Koldobskii
, p. 1194 - 1201 (2007/10/03)
Alkylation of 1-substituted tetrazole-5-thiones under conditions of phase-transfer catalysis in the two-phase system liquid-liquid proceeds regioselectively at the sulfur atom, regardless of the alkylating agent and phase-transfer catalyst. Phase-transfer oxidation of the 5-alkylthiotetrazoles thus obtained by potassium permanganate is a convenient method for preparation of 5-alkylsulfonyltetrazoles which can be used to synthesize functionally substituted tetrazoles.
Metal-assisted Reactions: Part 19. Burst Kinetics in Heterogeneous Catalytic Transfer Hydrogenolysis
Johnstone, Robert A. W.,Price, Peter J.
, p. 1069 - 1076 (2007/10/02)
Arene formation by catalytic transfer hydrogenolysis of aryloxytetrazolyl ethers in the liquid-phase shows biphasic concentration-time curves which indicate rate-limiting dissociation of heterogeneous complexes between catalyst and one of the reaction products, a tetrazolone.A dependence of catalytic reaction rate on pH and following modifications made to the catalyst are reported also.
METAL-ASSISTED REACTIONS-13. RAPID, SELECTIVE REDUCTIVE CLEAVAGE OF PHENOLIC HYDROXYL GROUPS BY CATALYTIC TRANSFER METHODS
Hussey, Brendan J.,Johnstone, A. W.,Entwistle, Ian D.
, p. 3775 - 3781 (2007/10/02)
Previous work has shown that, after converting phenols into suitable phenolic ethers, the aromatic C-O bond of the original phenol can be reductively cleaved heterogeneously to give a C-H bond through the use of molecular hydrogen or hydrogen donors together with a transition metal catalyst.The present work provides a method for selectively replacing a phenolic OH group by H in just a few minutes, compared with the 2 to 4 hr required previously using a hydrogen donor and the several hours under pressure required for molecular hydrogen.Various kinds of groups are suitable for preparing the required phenolic ethers from phenols, but the best ones are strongly electronwithdrawing heteroaromatic entities.Solvent appears to play an important role in this heterogeneous reaction, the mechanism of which is discussed.
