Carbamoyl Fluorides: A Platform to Interrogate Fluoride-Enabled Reactivity
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract The strong and polar nature of C–F bonds impart organofluorine compounds with highly desirable properties, making them indispensable in pharmaceutical, agrochemical, and polymer research. While this bond strength makes the modification of organofluorine compounds challenging, it also creates opportunities for the development of innovative strategies for their functionalization. Carbamoyl fluorides represent an emerging class of fluorinated electrophiles, showcasing unique fluoride-enabled reactivity and serving as versatile building blocks for accessing valuable amides and heterocyclic compounds. This review highlights recent progress in the synthesis and reactivity of carbamoyl fluorides, including comparisons to their chlorinated counterparts where relevant. 1 Introduction 2 Synthesis and Simple Nucleophilic Substitution Reactions of Carbamoyl Fluorides 2.1 Direct Use of Difluorophosgene 2.2 Use of (Di)fluorophosgene Equivalents 2.2.1 From Isocyanates and Thioformamides 2.2.2 From Amines 2.3 Use of Difluorocarbene Sources 2.4 Use of CO2 and Deoxyfluorinating Reagents 2.5 Miscellaneous Methods 3 Reactivity of Carbamoyl Fluorides 3.1 Covalent Inhibition of Enzymes 3.2 Nucleophilic Substitution 3.3 Transition-Metal-Catalyzed C–F Bond Activation 3.4 Lewis Acid and Base Catalyzed Carbamoylation 4.0 Outlook and Conclusion
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it