10. Patented Literature 2616 10.1. Esterification 2616 10.2. Ether Formation 2619 10.2.1. Etherification without Cyclization 2619 10.2.2. Etherification with Cyclization 2624 10.3. N-Alkylation 2625 10.4. Other Reactions 2627 11. Summary and Outlook 2628 12. Note Added in Proof 2628 13. Abbreviations Used in This Review 2629 14. Acknowledgments 2629 15. Supporting Information Available 2630 16. References 2630

Mitsunobu and Related Reactions: Advances and Applications

We report a new family of homoleptic iridium(III) complexes that emit blue phosphorescence at room temperature. The iridium( III) complexes are comprised of phenyltriazole ligands and were easily prepared via short synthetic routes. The parent fac-tris(1-methyl-5-phenyl-3-propyl-[1,2,4]triazolyl)iridium(III) complex exhibits blue photoluminescence (PL) with emission peaks at 449 and 479 nm and has a solution PL quantum yield of 66%. The emission was sequentially blue-shifted by the attachment of one and two fluorine atoms to the ligand phenyl ring with the fac-tris{1-methyl-5-(4,6-difluorophenyl)-3-propyl-[1,2,4]triazolyl} iridium( III) complex having the 1931 Commission Internationale de l'Eclairage coordinates of (0.16, 0.12) at room temperature. In contrast, when the phenyl ring of the ligands was substituted by trifluoromethyl, the PL spectrum was red-shifted when compared to the parent compound whereas if the trifluoromethyl group was attached to the triazole ring, the emission was blue-shifted. The radiative rates of these new blue iridium( III) complexes were found to be in the range of 2-6 x 105 s(-1), indicating that the emission had varying amounts of metal-to-ligand charge-transfer character. Molecular orbital calculations showed that for the fluorinated complexes the contribution of the ligand triplet character to the emissive energy state increased with the hypsochromic shift in emission. This was confirmed by time-resolved PL measurements, which showed that the complex with the deepest blue emission had the slowest radiative decay rate.

Blue Phosphorescence from Iridium(III) Complexes at Room Temperature

Nitrogen-rich carbon nitride (CNx, x ≥ 1) network materials have been produced as disordered structures by a variety of precursor-based methods, many that involve solid-state thermolysis at or above 500 °C. One popular precursor building block is the triazine unit (C3N3), and most postulated amorphous CNx network structures are based on cross-linked triazine units. Since hydrogen is most often observed in the product, these materials are usually more appropriately described as CNxHy materials. Results from recent carbon nitride studies using larger conjugated heptazine (C6N7) precursors and from rigorous structural investigations of triazine to heptazine thermal conversion processes have prompted a reexamination of likely local structures present in amorphous carbon nitride networks formed by triazine thermolysis reactions. In the present study, the formation and local structure of a CNxHy material formed via the rapid and exothermic decomposition of a reactive triazine precursor, C3N3(NHCl)3, was examine...

From triazines to heptazines: deciphering the local structure of amorphous nitrogen-rich carbon nitride materials.

5.3. Aromatic Ring Formation 1576 5.3.1. One Substituent at C-2 1576 5.3.2. Two Substituents at C-2 and C-3 1577 5.3.3. Two Substituents at C-2 and C-5 1577 5.3.4. Two Substituents at C-3 and C-4 1577 5.3.5. Three Substituents at C-2, C-3, and C-4 1578 5.3.6. Four Substituents at Carbon Atoms 1579 5.3.7. Benzotriazolyl Substituent at the Ring 1579 6. Furan 1580 6.1. Nonaromatic Rings 1580 6.1.1. Tetrahydrofurans 1580 6.1.2. 2,5-Dihydrofurans 1580 6.2. Electrophilic Substitution of the Aromatic Ring 1581 6.3. Aromatic Ring Formation 1582 7. Thiophene 1583 7.1. Nonaromatic Rings 1583 7.2. Electrophilic Substitution of the Aromatic Ring 1583 7.3. Aromatic Ring Formation 1583 8. Five-Membered Rings with Two Heteroatoms 1584 8.1. Pyrazole 1584 8.2. Imidazole 1586 8.3. Isoxazole 1589 8.4. Oxazole 1590 8.5. Thiazole 1592 9. Five-Membered Rings with Three or Four Heteroatoms 1594

Synthesis of Heterocycles Mediated by Benzotriazole. 1. Monocyclic Systems

Benzotriazole: An overview on its versatile biological behavior

Several substituted 2- and 4-hydroxyacetophenones are linked to Wang resin via a modified Mitsunobu protocol These resin-bound acetophenones are condensed with aromatic aldehydes, and the resulting chalcones 5 are used for the synthesis of 2-dialkylamino- (9a−d) and 2-alkylamino-4,6-diarylpyridines (11a−f), and 2-alkyl-4,6-diaryl- (14a) and 2,4,6-triarylpyrimidines (14b,c) in a manner suitable for combinatorial applications

Syntheses of 2-alkylamino- and 2-dialkylamino-4,6-diarylpyridines and 2,4,6-trisubstituted pyrimidines using solid-phase-bound chalcones.

Synthesis of N,N-Disubstituted 3-Amino-1,2,4-triazoles

Syntheses of 2,4‐diaryl‐2,3‐dihydro‐1,5‐benzothiazepines

Synthesis of substituted 4(6)-amino-1,3,5-triazin-2-ones and -1,3,5-triazin-2-thiones.

The present invention relates to novel 2-aminopyridine derivative compounds of formula (I) wherein R1 to R5 have the meanings provided herein. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing 2-aminopyridine derivative compounds.

Behrouz Forood

Papers

Syntheses of 2-alkylamino- and 2-dialkylamino-4,6-diarylpyridines and 2,4,6-trisubstituted pyrimidines using solid-phase-bound chalcones.

Synthesis of N,N-Disubstituted 3-Amino-1,2,4-triazoles

Syntheses of 2,4‐diaryl‐2,3‐dihydro‐1,5‐benzothiazepines

Synthesis of substituted 4(6)-amino-1,3,5-triazin-2-ones and -1,3,5-triazin-2-thiones.

2-aminopyridine derivatives and combinatorial libraries thereof