Scientific publications

Work at the edge of AI and chemistry.

Selected papers by b12 labs and our people, spanning chemistry agents, synthesis planning, molecular knowledge extraction, and catalysis.

Matter May issue cover for the Synthegy paper
12 selected papers
8 venues represented
2019-2026 research span

Featured

The Matter paper anchors the page as the newest research story: natural-language strategy for synthesis planning and reaction mechanism elucidation.

Matter 2026 Journal article

Chemical reasoning in LLMs unlocks strategy-aware synthesis planning and reaction mechanism elucidation

Andres M. Bran, Théo A. Neukomm, Daniel P. Armstrong, Zlatko Jončev, Philippe Schwaller

Positions LLMs as chemical reasoning engines that guide retrosynthesis and mechanism search through natural-language strategy.

71% alignment with independent expert chemists 10.1016/j.matt.2026.102812
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Library

Selected papers.

A living collection of work from b12 and the scientists behind it. Additions can be made from a single data file as the publication list grows.

2024
Nature Machine Intelligence Agents Open access

Augmenting large language models with chemistry tools

Andres M. Bran, Sam Cox, Oliver Schilter, Carlo Baldassari, Andrew D. White, Philippe Schwaller

Introduces ChemCrow, a tool-augmented chemistry agent spanning synthesis, drug discovery, and materials design.

2024
Language + Molecules Workshop Scientific knowledge ACL Anthology

Knowledge Graph Extraction from Total Synthesis Documents

Andres M. Bran, Zlatko Jončev, Philippe Schwaller

Introduces GOSyBench, a benchmark for extracting graph-like synthetic route knowledge from chemistry papers.

2022
Angewandte Chemie Catalysis Open access

Atroposelective Arene-Forming Alkene Metathesis

Zlatko Jončev, Christof Sparr

Shows catalyst control over stereogenic axes by traceless arene formation from stereodynamic trienes.

2025
arXiv Strategy Preprint

SynthStrategy: Extracting and Formalizing Latent Strategic Insights from LLMs in Organic Chemistry

Daniel Armstrong, Zlatko Jončev, Andres M. Bran, Philippe Schwaller

Distills synthetic strategy into verifiable Python rules and releases USPTO-ST, a strategic-tagged synthesis route dataset.

2025
Digital Discovery Retrosynthesis Open access

Tango*: constrained synthesis planning using chemically informed value functions

Daniel Armstrong, Zlatko Jončev, Jeff Guo, Philippe Schwaller

Adapts Retro* for starting material-constrained synthesis planning with a chemically informed TANGO cost function.

2025
arXiv Retrosynthesis Preprint

Synthelite: Chemist-aligned and feasibility-aware synthesis planning with LLMs

Nguyen Xuan-Vu, Daniel Armstrong, Milena Wehrbach, Andres M. Bran, Zlatko Jončev, Philippe Schwaller

Explores LLM-directed retrosynthetic transformations with natural-language expert intervention.

2023
ChemCatChem Biocatalysis Peer reviewed

An Artificial Metalloenzyme for Atroposelective Metathesis

Tobias Vornholt, Zlatko Jončev, Valerio Sabatino, Sven Panke, Thomas R. Ward, Christof Sparr, Markus Jeschek

Uses biotin-streptavidin artificial metalloenzymes to produce atropisomeric binaphthalenes by ring-closing metathesis in water.

2025
arXiv Mechanisms Preprint

Teaching Language Models Mechanistic Explainability Through MechSMILES

Théo A. Neukomm, Zlatko Jončev, Philippe Schwaller

Teaches language models arrow-pushing mechanism prediction with a compact MechSMILES representation of electron flow.

2025
arXiv Molecular design Preprint

Generative Molecular Design with Steerable and Granular Synthesizability Control

Jeff Guo, Víctor Sabanza-Gil, Zlatko Jončev, Jeremy S. Luterbacher, Philippe Schwaller

Builds a small-molecule generative design framework with reaction-level constraints over allowed and avoided synthesis steps.

2025
arXiv Retrosynthesis Preprint

TempRe: Template generation for single and direct multi-step retrosynthesis

Nguyen Xuan-Vu, Daniel P. Armstrong, Zlatko Jončev, Philippe Schwaller

Reframes template-based retrosynthesis as sequence generation across single-step, multi-step, and direct route tasks.

2019
Journal of the Serbian Chemical Society Natural products Short communication

Synthesis of two novel C-19 analogues of (±)-alstoscholarisine A

Filip Bihelovic, Zorana Ferjancic, Zlatko Jončev

Reports two racemic C-19 analogues of alstoscholarisine A prepared through 13-step syntheses from a skatole derivative.