Results 71 to 80 of about 26,606 (255)
Beilstein Journal of Organic Chemistry, 2019 A diastereoselective approach to axially chiral imidazopyridine-containing biaryls has been developed. The reactions proceed through a radical cyclization cascade to construct the biaryls with good to excellent central-to-axial chirality transfer.
Hong Yan +4 more
doaj +1 more source
Diastereoselective Synthesis of Trisubstituted Cyclopropylstannanes
, 2016 Diastereoselective Synthesis of Trisubstituted ...
Seok-In Kim (3046293) +2 more
core +1 more source
Synthesis of a novel chemotype via sequential metal-catalyzed cycloisomerizations
Beilstein Journal of Organic Chemistry, 2012 Sequential cycloisomerizations of diynyl o-benzaldehyde substrates to access novel polycyclic cyclopropanes are reported. The reaction sequence involves initial Cu(I)-mediated cycloisomerization/nucleophilic addition to an isochromene followed by ...
Bo Leng +4 more
doaj +1 more source
Brønsted-Acid Catalyzed Diastereoselective Synthesis of Spiroisoindolinones from Enamides [PDF]
A highly diastereoselective synthesis of spiroisoindolinones from enamides and 3-hydroxy-isoindolinones is reported. The reaction proceeds rapidly in the presence of para-toluenesulfonic acid as Brønsted acid-catalyst and affords a variety of densely ...
Miro , Halaczkiewicz +3 more
core +2 more sources
Nature Communications, 2017 Enantioselective synthesis of six-membered oxacycles with multiple stereogenic centres is essential for the discovery of new therapeutic agents. Here the authors show organocatalytic cycloetherification for the highly enantio- and diastereoselective ...
Naoki Yoneda +4 more
doaj +1 more source
Stereoselective gridization and polygridization with centrosymmetric molecular packing
Nature Communications, 2020 Gridarenes with well-defined edges and vertices represent versatile nanoscale building blocks for installating frameworks but suffer from lack of stereoselective control during their synthesis. Here, the authors report a diastereoselective gridization of
Dongqing Lin +11 more
doaj +1 more source
Highly diastereoselective dimerisation of alkenylthiazolines
, 2001 Alkenylthiazolines undergo a highly diastereoselective novel dimerisation when treated with trichloroacetyl chloride or with trifluoroacetic ...
Elliott, Mark Christopher +3 more
core +1 more source
Fluorine‐Directed Diastereoselective Iodocyclizations
Angewandte Chemie International Edition, 2007 An inside job: β‐Fluorinated lactones and tetrahydrofurans are synthesized by iodocyclization of various allylic fluorides. The fluorine substituent acts as a highly efficient syn‐stereodirecting group for the ring closure. The experimental results combined with theoretical studies provide evidence in support of an “inside fluoro effect” to account for
Tredwell, M +5 more
openaire +2 more sources
Diastereoselective reactions of enolates
, 1996 Triphenylglycol-derived esters 2 and 8a have been applied in asymmetric aldol reactions. The homochiral propionates 7 and 8a have been applied in asymmetric aldol reactions.
Galle, D. +3 more
core +1 more source
Diastereoselective Formation of Complexed Methylenediphosphiranes [PDF]
Organometallics, 2008 Stable syn-substituted methylenediphosphirane complexes are obtained from the reaction of transient, electrophilic phosphinidenes [R-P=W(CO)
Jansen, Helen +6 more
openaire +4 more sources