Results 31 to 40 of about 262,165 (220)
Rapid Route-Finding for Bifurcating Organic Reactions. [PDF]
A large number of organic reactions feature post-transition-state bifurcations. Selectivities in such reactions are difficult to analyze because they cannot be determined by comparing the energies of competing transition states.
Goodman, Jonathan M, Lee, Sanha
core +1 more source
Versatile C(sp2)−C(sp3) ligand couplings of sulfoxides for the enantioselective synthesis of diarylalkanes [PDF]
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98% yield and greater than 99.5% enantiomeric excess.
Aggarwal+72 more
core +2 more sources
Total Syntheses of Aromatic Abietane Diterpenoids Utilizing Advances in the Pummerer Rearrangement.
The first total syntheses of triptobenzene T, vitexifolin C, 4- epi-triptobenzene L, triptobenzene L, and nepetaefolin F have been accomplished through an enantioselective, common intermediate approach and have enabled the confirmation and/or ...
Xin Li, R. Carter
semanticscholar +1 more source
Photooxygenation of Non-Aromatic Heterocycles [PDF]
Photooxygenation of non-aromatic heterocycles and cyclic compounds containing non-usual heteroatoms, namely silicon, germanium and tellurium has been reviewed. All three types of photooxygenation (Types I-III) can take place.
F. CERMOLA, M. R. IESCE, M. RUBINO
core +1 more source
Reactions between lithiated 1,3-dithiane oxides and trialkylboranes [PDF]
Various 2-substituted-1,3-dithiane oxides (1-oxide and 1,3-dioxide) have been metalated and reacted for the first time with a trialkylborane (trioctylborane).
El-Hiti, Gamal A.+3 more
core +1 more source
Synthesis of fluorinated oxygen- and sulfur-containing heteroaromatics [PDF]
Milk protein concentrate (79% protein) reconstituted at 13.5% (w/v) protein was heated (90 °C, 25 min, pH 7.2) with or without added calcium chloride.
Jones, David J.+3 more
core +1 more source
Advancing Sulfinyl Radical Chemistry: An Asymmetric Smiles Rearrangement with Chiral Sulfoxides
A visible‐light‐driven, asymmetric sulfinyl‐Smiles rearrangement enables the enantioselective trifunctionalization of chiral sulfoxides via radical addition, 1,5‐aryl migration, and sulfinyl radical interception. By tuning the redox potentials of key components, this cascade forms two C─C and one C─S bond in a single step, yielding enantioenriched ...
Yawen Hu, Till Schreyer, Cristina Nevado
wiley +1 more source
Novel reactions and mechanism of -HN-N= azole derivatives with DMSO [PDF]
The reaction mechanism of –NH-N= azole derivatives and sulfur ketones derivatives is reported. The reaction mechanism is suitable for the synthesis of azole compounds containing thio-function. The free-mediated reaction mechanism of –NH-N= azole and DMSO
Dong, Hong-Ru
core +2 more sources
The inclusion of a tetrahydrothiopheno equatorial substituent on a glycoluril moiety of a cucurbit[n]uril provides an avenue to reactive derivatization. This process extends the potential for future applications of the cucurbituril homologues 7 and 8.
Ahmed Abdulrahman+5 more
wiley +1 more source
The combination of three privileged structures, fullerenes, selenosugars, and steroids, has led to new hybrids in which the novel methanofullerenes are decorated with fragments of biological interest. Theoretical calculations at the DFT‐B3LYP‐D3(BJ)/6‐311G(2d,p) level allowed the determination of the most stable conformation, and docking simulations ...
Reinier Lemos+5 more
wiley +1 more source