Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Veronica V. Angeles"'
Autor:
Veronica V. Angeles‐Dunham, Dimitry Kurouski, Nelu Grinberg, Joshua D. Sieber, Chris H. Senanayake, Nathan K. Yee, Daniel R. Fandrick, Anita E. Mattson, Heewon Lee, Nizar Haddad, Jinhua J. Song, Divya Chennamadhavuni
Publikováno v:
Advanced Synthesis & Catalysis. 358:3062-3068
Publikováno v:
Organic Letters. 15:5000-5003
Nitrimines have been identified as impressive starting points for the syntheses of otherwise inaccessible, sterically encumbered enamines. The activation of nitrimines with urea catalysts for reaction with a variety of amines enables the formation of
Publikováno v:
ChemInform. 46
Nitrimines are employed as powerful reagents for metal-free formal C(sp(2) )-C(sp(2) ) cross-coupling reactions. The new chemical process is tolerant of a wide array of nitrimine and heterocyclic coupling partners giving rise to the corresponding di-
A mild method for the deprotection of tetrahydropyranyl (THP) ethers catalyzed by iron(III) tosylate
Publikováno v:
Tetrahedron Letters. 52:6939-6941
A mild method for the deprotection of THP ethers catalyzed by iron(III) tosylate (2.0 mol %) in CH3OH has been developed. Iron(III) tosylate, Fe(OTs)3·6H2O, is a commercially available solid that is inexpensive, noncorrosive, and easy to handle. The
Publikováno v:
Angewandte Chemie (International ed. in English). 53(52)
Nitrimines are employed as powerful reagents for metal-free formal C(sp(2) )-C(sp(2) ) cross-coupling reactions. The new chemical process is tolerant of a wide array of nitrimine and heterocyclic coupling partners giving rise to the corresponding di-
Publikováno v:
ChemInform. 45
N-Nitrosubstituted imines react with a wide range of secondary amines in the presence of an urea catalyst to give different sterically encumbered enamines under mild and metal-free conditions.
Publikováno v:
Tetrahedron Letters. 51:5643-5645
A bismuth bromide-catalyzed (10.0 mol %) multicomponent reaction involving the allylation of THF- and THP-ethers, followed by in situ derivatization with acetic anhydride to generate highly functionalized esters has been developed under solvent-free
Publikováno v:
Tetrahedron Letters. 51:1056-1058
The most common method for the deprotection of TBDMS ethers utilizes stoichiometric amounts of tetrabutylammonium fluoride, n-Bu4N + F (TBAF), which is highly corrosive and toxic. We have developed a mild and chemoselective method for the deprotectio
Publikováno v:
ChemInform. 44
Incorporation of internal Lewis acid moieties onto urea scaffolds gives rise to novel tunable hydrogen bond donor catalysts.
Publikováno v:
Chemical communications (Cambridge, England). 49(39)
The strategic incorporation of internal Lewis acids onto urea scaffolds gives rise to a family of tunable hydrogen bond donor catalysts. The nature of the Lewis acid and associated ligands affects the urea polarization, acidity, and activity in react