Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Hollie K. Jacobs"'
Publikováno v:
Tetrahedron Letters. 54:630-634
The HOPO vinyl sulfonamide 3 and the corresponding HOPO acrylamide 10 were easily prepared by short synthetic sequences. Investigation of the aza-Michael reactions of these linkers showed that they proceed at a higher rate in solvent systems containi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9567c9bce02d0b3daadba92e59d78b05
https://doi.org/10.1016/j.tetlet.2012.11.136
https://doi.org/10.1016/j.tetlet.2012.11.136
Publikováno v:
Tetrahedron. 68:10030-10039
Synthetic approaches to mixed ligand chelators on readily available tert-butylphenol–formaldehyde oligomer, PFO, scaffolds were examined. In a promising approach, tris and tetraphenol oligomers were selectively mono or di protected using tert-butyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::971d11854c366b72f2d18c7befa999de
https://doi.org/10.1016/j.tet.2012.09.032
https://doi.org/10.1016/j.tet.2012.09.032
Publikováno v:
Tetrahedron Letters. 53:6367-6371
Two novel bifunctional N -methylhydroxamate–isocyanate linkers 20 and 21 were prepared in good yield and high purity from the corresponding amine salts using a biphasic reaction with phosgene. The facile ring opening reaction of N -Boc lactams usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d32bd9b72bcdda7168d21b9d4eff4b3
https://doi.org/10.1016/j.tetlet.2012.09.025
https://doi.org/10.1016/j.tetlet.2012.09.025
Publikováno v:
Tetrahedron. 67:2206-2214
N-Alkyl-N-benzyloxy carbamates, 2, undergo facile intramolecular cyclization with a variety of carbon nucleophiles to give functionalized five- and six-membered protected cyclic hydroxamic acids, 3, in good to excellent yields. This method can be ext
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f560cfd69f3f8f629f29654a3d8d2931
https://doi.org/10.1016/j.tet.2011.01.073
https://doi.org/10.1016/j.tet.2011.01.073
Publikováno v:
Tetrahedron Letters. 52:887-890
The intramolecular cyclizations of oxazolidinones with carbanions adjacent to sulfones, sulfoxides, and phosphonates proceed in high yields to obtain functionalized γ and δ lactams. The chiral oxazolidinone precursors can be readily synthesized fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf37b2b402582a6780b892b807a84b6c
https://doi.org/10.1016/j.tetlet.2010.12.062
https://doi.org/10.1016/j.tetlet.2010.12.062
Publikováno v:
Synthesis. 2011:57-64
The HOPO sulfonamide reagent, 3, was prepared from commercial 2,3-dihydroxypyridine in four steps in good yields. Sulfonamide 3 readily underwent selective alkylation with dibromides in the presence of base or could be coupled to alcohols using Mitsu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7369f0f067aadd5b8ebd9a988af4bbc
https://doi.org/10.1055/s-0030-1258337
https://doi.org/10.1055/s-0030-1258337
Autor:
Krishnaswamy Devanathan, Patricia C. Wilkins, Jennifer A. Bell, Aravamudan S. Gopalan, Hollie K. Jacobs
Publikováno v:
Tetrahedron Letters. 48:8029-8033
A convenient synthesis of a variety of substituted N -hydroxysulfamides from chlorosulfonyl isocyanate is reported. Alkyl groups can be introduced selectively on the N -Boc nitrogen of key intermediates 1a or 1b using the Mitsunobu reaction with alco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e2b088655777b3ab0ae11828eee2e32
https://doi.org/10.1016/j.tetlet.2007.09.037
https://doi.org/10.1016/j.tetlet.2007.09.037
Autor:
Aravamudan S. Gopalan, Gloria Martinez, Hollie K. Jacobs, Sumathi Chittamuru, Timothy N. Lambert
Publikováno v:
Tetrahedron Letters. 48:567-571
The reactions of the electrophilic iminium ester mesylate salt 1 with alcohols, phenols and thiols has been investigated. In the presence of base, thiols, phenols and thiophenol react with 1 to give the corresponding ether linked HOPO derivatives in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8f68930f54da7e1a35a5888f2fcdce3
https://doi.org/10.1016/j.tetlet.2006.11.128
https://doi.org/10.1016/j.tetlet.2006.11.128
In contrast to 2,3-dihydroxypyridine, the 3-benzyloxy protected derivative, 2, undergoes facile alkylation at ambient temperatures with a variety of functionalized alkyl halides in good yields. This alkylation has been used to prepare a number of lin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e666eb026b03b4e09f43e54b06859678
https://europepmc.org/articles/PMC4665106/
https://europepmc.org/articles/PMC4665106/
Publikováno v:
Reactive and Functional Polymers. 55:109-119
A major goal of our research program is to develop water soluble chelating polymers for the selective separation of trivalent cations such as iron(III) and tetravalent actinide ions such as Th(IV) or Pu(IV) from aqueous, radioactive waste streams. As
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b87df6d372da39f486e39fe0d6698af
https://doi.org/10.1016/s1381-5148(02)00199-2
https://doi.org/10.1016/s1381-5148(02)00199-2