Concept · chemistry
Organic synthesis
7 studies1 discovery
Organic synthesis is the planned construction of carbon frameworks by forming and breaking bonds, usually judged by yield, selectivity and characterisation of isolated products.
Undergraduates live in this course: the reaction on the page is only as real as the molecule you can isolate.
Studies
7
Findings
5
7 supporting · 0 challenging · 0 qualifying citations
Open tensions
1
Currently
What we know
- This library holds 7 empirical chemistry papers on organic synthesis with isolated findings, rates or spectra rather than reviews.
- A bulky aryl-PPCl diphosphene is isolated as a monomer, swapped to Br and I, and shown to have a P=P double bond unlike diazonium chlorides.
- Meta-linked squaramide macrocycles bind SO42− so tightly in wet DMSO that NMR cannot measure Ka, and they still select sulfate in 50% water.
- Ethyl arylazocarboxylates plus iron phthalocyanine and air replace stoichiometric DEAD in Mitsunobu esterifications with high inversion.
- PhC(O)SH plus Ir(ppy)3 switches photoredox arylation from N-methyl C–H to the benzylic position, giving 1,1-diarylmethylamines in hours.
Largest unresolved question
A high yield on one substrate is not a general method, and many 'new reactions' are still one-pot screens rather than mechanism-complete syntheses.
Common misconceptions
New reactions always work on every substrate.
Scope, yield and characterisation are empirical and often narrow.
Related
Claim ledger
What the evidence shows
Drawn from 7 studies in this library. Mix labels say which citation roles are present; they are not a strength score. Supports means evidence for a finding; Challenges means evidence against a stated position; Qualifies marks scope.
This library holds 7 empirical chemistry papers on organic synthesis with isolated findings, rates or spectra rather than reviews.
- Isolating rare arylhalodiphosphene P=P–X bonds
- Squaramide macrocycles that prefer sulfate in water
- Catalytic Mitsunobu chemistry with recyclable azo reagents
Study Role Design N Population Outcome Isolating rare arylhalodiphosphene P=P–X bonds Supports OtherSynthesis, SC-XRD, and DFT of thermally robust arylhalodiphosphenes and halide exchanges Main-group synthesis/structure study — no sample N Arylhalodiphosphene compounds and silver coordination complexes P=P bonding metrics and E/Z preferences across halide series Squaramide macrocycles that prefer sulfate in water Supports OtherSynthesis and aqueous NMR titration of squaramide macrocycles for sulfate recognition Anion-receptor binding study — no sample N Macrocyclic squaramide receptors in water/DMSO mixtures Sulfate binding affinity and selectivity versus competing anions Catalytic Mitsunobu chemistry with recyclable azo reagents Supports Animal / in-vitroCatalytic ethyl arylazocarboxylates reoxidized with O2 and iron phthalocyanine Substrate-scope esterifications rather than a single analytic N Secondary alcohols and nucleophiles under Mitsunobu conditions Recyclable azo reagents with air as oxidant give high yield and stereochemical inversion, replacing stoichiometric DEAD A bulky aryl-PPCl diphosphene is isolated as a monomer, swapped to Br and I, and shown to have a P=P double bond unlike diazonium chlorides.
Meta-linked squaramide macrocycles bind SO42− so tightly in wet DMSO that NMR cannot measure Ka, and they still select sulfate in 50% water.
Ethyl arylazocarboxylates plus iron phthalocyanine and air replace stoichiometric DEAD in Mitsunobu esterifications with high inversion.
PhC(O)SH plus Ir(ppy)3 switches photoredox arylation from N-methyl C–H to the benzylic position, giving 1,1-diarylmethylamines in hours.
Debates
Tensions and limits
Some items are genuine disagreements on the same question. Others mark different assays, populations, or outcomes.
A high yield on one substrate is not a general method, and many 'new reactions' are still one-pot screens rather than mechanism-complete syntheses.
A high yield on one substrate is not a general method, and many 'new reactions' are still one-pot screens rather than mechanism-complete syntheses.
Study Role Design N Population Outcome Isolating rare arylhalodiphosphene P=P–X bonds Supports OtherSynthesis, SC-XRD, and DFT of thermally robust arylhalodiphosphenes and halide exchanges Main-group synthesis/structure study — no sample N Arylhalodiphosphene compounds and silver coordination complexes P=P bonding metrics and E/Z preferences across halide series Squaramide macrocycles that prefer sulfate in water Supports OtherSynthesis and aqueous NMR titration of squaramide macrocycles for sulfate recognition Anion-receptor binding study — no sample N Macrocyclic squaramide receptors in water/DMSO mixtures Sulfate binding affinity and selectivity versus competing anions
PaperFren reads this as a limit on how far one study travels — different assays, populations, or outcomes — not a forced fight between papers.
Timeline
How understanding moved
Study years are when the paper was published. Evidence edits are dated changes to this page's claims. Explanations are when PaperFren added a Discovery — not a claim that the science happened that day.
2026
- Isolating rare arylhalodiphosphene P=P–X bonds
Concept page published
Organic synthesis
- Six thousand reactions an hour changes which chemistry questions can be asked
Change log
What changed
Dated edits to this page's evidence: studies added or removed from a claim, claims added or withdrawn, and new explanations tagged here. Coverage edits are distinct from reviewed research changes and corrections. Dates record PaperFren updates; study publication dates appear in the timeline.
- Coverage updated · Concept page published
Papers
7 studies in this library bear on Organic synthesis, ordered by citations.
- SET/HAT flips benzylamine C–H arylation site
PhC(O)SH plus Ir(ppy)3 switches photoredox arylation from N-methyl C–H to the benzylic position, giving 1,1-diarylmethylamines in hours.
- Squaramide macrocycles that prefer sulfate in water
Meta-linked squaramide macrocycles bind SO42− so tightly in wet DMSO that NMR cannot measure Ka, and they still select sulfate in 50% water.
- Gold C–N/C–O coupling without extra oxidants
Cyclometalated gold catalyzes aryl C–N and C–O coupling in air/water by Au(I)/Au(III) oxidative addition, without sacrificial I(III) or F+ oxidants.
- Catalytic Mitsunobu chemistry with recyclable azo reagents
Ethyl arylazocarboxylates plus iron phthalocyanine and air replace stoichiometric DEAD in Mitsunobu esterifications with high inversion.
- DOS fragments grow hits in several directions at once
A modular diversity-oriented fragment library gave crystallographic hits on several proteins and then short, cheap sequences to many analogues, including a first covalent PBP3 fragment.
- A higher-yield route to FP–PEG–biotin ABPP probe
Reworking Cravatt’s FP–PEG–biotin synthesis cuts chromatography and raises overall yield from 1% to 28.5%.
- Isolating rare arylhalodiphosphene P=P–X bonds
A bulky aryl-PPCl diphosphene is isolated as a monomer, swapped to Br and I, and shown to have a P=P double bond unlike diazonium chlorides.
Compare studies
Select 2–10 studies. Design and N are labels, not a ranking.
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Questions
What is still open
A high yield on one substrate is not a general method, and many 'new reactions' are still one-pot screens rather than mechanism-complete syntheses.
Ask PaperFren about Organic synthesis
Study this conceptflashcards and short-answer questions
What does organic synthesis mean in this chemistry library?
Organic synthesis is the planned construction of carbon frameworks by forming and breaking bonds, usually judged by yield, selectivity and characterisation of isolated products.
Name one empirical finding from the organic synthesis papers.
A bulky aryl-PPCl diphosphene is isolated as a monomer, swapped to Br and I, and shown to have a P=P double bond unlike diazonium chlorides.
What is a limit of organic synthesis evidence here?
A high yield on one substrate is not a general method, and many 'new reactions' are still one-pot screens rather than mechanism-complete syntheses.