Subtopic Deep Dive
Chiral Ligand Design for Atroposelectivity
Research Guide
What is Chiral Ligand Design for Atroposelectivity?
Chiral ligand design for atroposelectivity involves engineering BINOL-derived, PHOX, and peptide ligands to control axial chirality in metal-catalyzed couplings through steric and electronic optimization.
This subtopic focuses on ligands that induce high enantioselectivity in atropisomer synthesis. Computational modeling refines ligand structures for specific transformations (Metrano and Miller, 2018; 277 citations). Over 10 key papers since 1999 address ligand strategies in asymmetric catalysis.
Why It Matters
Chiral ligands enable enantioselective synthesis of axially chiral biaryls used in pharmaceuticals and materials (Basilaia et al., 2022; 267 citations). Peptide-based catalysts achieve remote desymmetrization for complex atropisomers (Metrano and Miller, 2018). These designs accelerate metal-catalyzed couplings, impacting drug development and natural product synthesis (Bringmann et al., 1999; 221 citations).
Key Research Challenges
Ligand Steric Optimization
Balancing bulkiness and flexibility in BINOL-derived ligands hinders high enantioselectivity in biaryl couplings. Computational models predict steric clashes but require validation (Shi et al., 2018; 190 citations). Experimental iteration remains time-intensive.
Electronic Effects Tuning
PHOX ligands demand precise electronic tuning for metal coordination in atroposelective reactions. Subtle changes alter selectivity, complicating design (Lassaletta et al., 2021; 379 citations). Predictive tools lag behind synthetic needs.
Peptide Scalability Issues
Peptide catalysts excel in remote atroposelectivity but suffer from synthesis complexity and stability limits (Metrano and Miller, 2018; 277 citations). Scaling for industrial use challenges reproducibility.
Essential Papers
Organocatalytic Atroposelective Synthesis of Indole Derivatives Bearing Axial Chirality: Strategies and Applications
Hong‐Hao Zhang, Feng Shi · 2022 · Accounts of Chemical Research · 388 citations
Catalytic atroposelective syntheses of axially chiral compounds have stimulated extensive interest in multiple communities, such as synthetic chemistry, biochemistry, and materials science, because...
Atroposelective transformation of axially chiral (hetero)biaryls. From desymmetrization to modern resolution strategies
José A. Carmona, Carlos Rodríguez-Franco, Rosario Fernández et al. · 2021 · Chemical Society Reviews · 379 citations
Atroposelective transformations of (hetero)biaryls are classified into desymmetrization, kinetic resolution, dynamic kinetic resolution, and dynamic kinetic asymmetric transformation depending on t...
Atropisomers beyond the C–C axial chirality: Advances in catalytic asymmetric synthesis
Guang‐Jian Mei, Wai Lean Koay, Chun-Yan Guan et al. · 2022 · Chem · 340 citations
Peptide-Based Catalysts Reach the Outer Sphere through Remote Desymmetrization and Atroposelectivity
Anthony J. Metrano, Scott J. Miller · 2018 · Accounts of Chemical Research · 277 citations
Nature's catalytic machinery has provided endless inspiration for chemists. While the enzymatic ideal has yet to be fully realized, the field has made tremendous strides toward synthetic, small-mol...
Atropisomerism in the Pharmaceutically Relevant Realm
Mariami Basilaia, Matthew H. Chen, Jim Secka et al. · 2022 · Accounts of Chemical Research · 267 citations
Atropisomerism is a conformational chirality that occurs when there is hindered rotation about a σ-bond. While atropisomerism is exemplified by biaryls, it is observed in many other pharmaceuticall...
Dynamic Stereochemistry of Chiral Compounds: Principles and Applications
Christian Wolf · 2008 · 222 citations
CHAPTER 1: Introduction: CHAPTER 2: Principles of Chirality and Dynamic Stereochemistry 2.1. Stereochemistry of chiral compounds 2.2. Dynamic stereochemistry of cyclic and acyclic chiral compounds ...
The Lactone Concept: An Efficient Pathway to Axially Chiral Natural Products and Useful Reagents
Gerhard Bringmann, Matthias Breuning, Stefan Tasler · 1999 · Synthesis · 221 citations
A highly efficient concept for the stereoselective synthesis of axially chiral biaryl target molecules is presented: the atroposelective ring cleavage of configurationally unstable lactone-bridged ...
Reading Guide
Foundational Papers
Start with Wolf (2008; 222 citations) for dynamic stereochemistry principles, then Bringmann et al. (1999; 221 citations) for lactone-bridged biaryl synthesis, as they establish axial chirality control basics.
Recent Advances
Study Lassaletta et al. (2021; 379 citations) for biaryl resolution strategies and Metrano and Miller (2018; 277 citations) for peptide atroposelectivity advances.
Core Methods
Core techniques include Pd-catalyzed C-H functionalization (Shi et al., 2018), peptide desymmetrization (Metrano and Miller, 2018), and computational steric optimization.
How PapersFlow Helps You Research Chiral Ligand Design for Atroposelectivity
Discover & Search
Research Agent uses searchPapers and citationGraph to map 250+ papers citing Metrano and Miller (2018), revealing peptide ligand networks. exaSearch uncovers unpublished preprints on BINOL modifications; findSimilarPapers links Shi et al. (2018) to PHOX variants.
Analyze & Verify
Analysis Agent employs readPaperContent on Lassaletta et al. (2021) to extract resolution strategies, then verifyResponse with CoVe checks enantioselectivity claims against data. runPythonAnalysis plots steric parameters from supplementary tables using NumPy, with GRADE scoring evidence strength for ligand efficacy.
Synthesize & Write
Synthesis Agent detects gaps in peptide scalability from Bringmann et al. (1999) literature. Writing Agent applies latexEditText for reaction schemes, latexSyncCitations for 20+ references, and latexCompile for publication-ready reviews; exportMermaid visualizes ligand design workflows.
Use Cases
"Analyze steric maps from Shi et al. 2018 Pd-catalyzed allylation paper."
Research Agent → searchPapers('Shi 2018 atropisomer') → Analysis Agent → readPaperContent + runPythonAnalysis (parse XYZ coordinates, compute buried volumes with NumPy) → matplotlib steric heatmap output.
"Write LaTeX review on peptide ligands for atroposelectivity citing Metrano 2018."
Research Agent → citationGraph('Metrano Miller 2018') → Synthesis Agent → gap detection → Writing Agent → latexEditText (draft section) → latexSyncCitations → latexCompile → PDF with schemes.
"Find GitHub code for computational ligand screening in atropisomer synthesis."
Research Agent → paperExtractUrls('atroposelectivity ligands') → Code Discovery → paperFindGithubRepo → githubRepoInspect → verified DFT optimization scripts for BINOL derivatives.
Automated Workflows
Deep Research workflow scans 50+ papers on biaryl atropisomers, chaining searchPapers → citationGraph → structured report on ligand trends from Wolf (2008). DeepScan applies 7-step CoVe analysis to verify Shi et al. (2018) enantioselectivity data with statistical checkpoints. Theorizer generates hypotheses on PHOX electronic tuning from Lassaletta et al. (2021).
Frequently Asked Questions
What defines chiral ligand design for atroposelectivity?
It engineers BINOL-derived, PHOX, and peptide ligands to induce axial chirality in couplings via steric and electronic control (Metrano and Miller, 2018).
What methods dominate this subtopic?
Peptide catalysts for remote desymmetrization (Metrano and Miller, 2018), Pd-catalyzed C-H allylation with chiral ligands (Shi et al., 2018), and computational steric modeling.
What are key papers?
Lassaletta et al. (2021; 379 citations) on biaryl transformations; Metrano and Miller (2018; 277 citations) on peptides; Bringmann et al. (1999; 221 citations) on lactone concepts.
What open problems exist?
Scalable peptide synthesis, predictive electronic tuning for PHOX ligands, and multi-axis atropisomer control remain unsolved (Bao et al., 2020).
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