Results 171 to 180 of about 19,176 (260)

Stereoselective Construction of Benzo‐Fused Tetrahydropyrrole Thiazines From Saccharin

European Journal of Organic Chemistry, Volume 29, Issue 33, 1 September 2026.
Saccharin was used as a template to construct a series of 10a‐substituted, benzo‐fused, pyrrolo thiazinone dioxides. Thereafter, diastereo‐divergent 10‐keto reduction gave either diastereomeric alcohol in a process that did not rely on the substituent at 10a's identity.
Seanán Doyle, Matthew Kiernan, Jordan Smyth, Ajay Mathew, Conor J. Crawford, Julia Bruno‐Colmenarez, Patrick J. Guiry, Aisha Khalifa, Paul Evans   +8 more
wiley   +1 more source

Transient Boryl Assistance Enables Stereoselective Alkylation of Acyclic Tetrasubstituted Enolates. [PDF]

Angew Chem Int Ed Engl
Li JX, Zhuo WZ, Jiang MY, Lin Y, Zhu YS, Su B.   +5 more
europepmc   +1 more source

Photogenerated Oxetanes as a Gateway to Uphill Cyclopropanation

Angewandte Chemie International Edition, Volume 65, Issue 35, 24 August 2026.
An atom‐economical route to densely functionalized cyclopropanes from furans and photochemically activated aldehydes is enabled by a unique oxetane‐to‐cyclopropane rearrangement. These cyclopropanes can be used to access complex bioactive scaffolds and serve as a platform for asymmetric cyclopropane synthesis.
Tim Köglmeier, Thomas J. Tiefel, Oliver Reiser   +2 more
wiley   +1 more source

1-Substituted-tricyclo[2.1.0.0 2,5]pentan-3-ones. Revisiting the diastereoselectivity

ARKIVOC, 2004
Veejendra K. Yadav, Virinder Singh Yadava   +1 more
doaj   +1 more source

Stereocontrolled entry to borylated piperidines <i>via</i> stepwise dearomative carboboration of pyridines. [PDF]

Chem Sci
Khalse LD, DeSnoo W, Lou YP, Tantillo DJ, Nairoukh Z.   +4 more
europepmc   +1 more source

Diastereoselective Synthesis of Axially Chiral Skipped Ene-Allenes Containing a Quaternary Stereocenter by Cyclopropene-Allene Metathesis. [PDF]

Angew Chem Int Ed Engl
Chen B, Zhou Y, Ho CY, Huang JQ.
europepmc   +1 more source

Solvent‐Driven Conformational Landscapes of a Tetradentate Schiff Base Ligand and Its Metal Complexes: A Genetic Algorithm–Guided VCD Investigation

Chemistry – A European Journal, Volume 32, Issue 32, 24 August 2026.
Solvent effects: vibrational circular dichroism (VCD) revealed pronounced solvent‐induced conformational shifts for a tetradentate salen ligand in CDCl3, a solvent generally considered benign. Contrary to the DFT prediction of a single dominant conformer family, quantum cluster growth together with the genetic algorithm guided VCD analysis uncovered ...
Amanda Nhi Tran, Mutasem Alshalalfeh, Colton D. Carlson, Andra Aniţa Radu, Vlad Ţeposu, Joseph Cheramy, Lili Zeng, Hui Zhang, Valentin Paul Nicu, Yunjie Xu   +9 more
wiley   +1 more source

Sigmatropic rearrangements of ynamides in stereoselective synthesis of complex molecular architectures: a comprehensive review. [PDF]

RSC Adv
Mishra A, Pati SS, Das JP.
europepmc   +1 more source

Solvent-controlled diastereoselectivity in tryptophan-catalyzed Mannich reactions

Solvent effects in the L-tryptophan-catalyzed Mannich reaction between hydroxyacetone and glyoxylate imines have been examined. The use of a DMSO/1-butanol (4:1 v/v) mixture as solvent at rt provided the expected Mannich adducts in good yields, high anti-
Moyano i Baldoire, Albert, Valero González, Guillem, León, Carlos M.   +2 more
core  

Relay Approach: A Convergent Synthesis of Key Fragments en route to (+)‐Neosorangicin A

Chemistry – A European Journal, Volume 32, Issue 32, 24 August 2026.
A selective synthesis of three key fragments of the antibiotically active (+)‐neosorangicin A is reported, providing a foundation for its convergent total synthesis and proof of strategy via a relay approach. ABSTRACT Herein, we report the synthesis of the three key fragments of the macrolide antibiotic (+)‐neosorangicin A, a compound exhibiting potent
Marvin Wenninger, Maxim Munt, Le Chang, Rositsa Stoykova, Roberto Ojcius, Oliver Spieß, Dieter Schinzer   +6 more
wiley   +1 more source