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Oh this is
spectacularly bad pseudoscience. Let me break down what's happening here:
The Proline Claim
Quantamide's argument:
• Young barley contains ~15mg proline (amino acid)
• Proline catalyzes transamidation reactions (per the 2013 paper)
• Therefore, proline is helping LSA + aldehydes → LSI formation
Why This Is Completely Wrong
1. The 2013 Paper Shows the OPPOSITE
From Table 1, Entry 7 of the actual paper:
•
Reaction in water: ~14% yield
•
Reaction neat (no solvent): >99% yield
Skorpio correctly points out:
> "you will see that this scheme of proline catalysis doesn't work very well at all in water"
The reaction conditions that DO work:
•
Neat (no solvent, just pure reactants)
•
Heated to 150°C
•
36 hours
Stahl's conditions:
• Aqueous solution (mostly water)
• Room temperature to ~40°C max
• 10-20 minutes stirring
These are completely incompatible.
2. Transamidation ≠ Aldehyde Condensation
Skorpio is absolutely correct:
> "The reactions being discussed in this thread are not transamidations. Transamidations have an amide and an amine swapping places, not an amide and an aldehyde"
Transamidation reaction:
Code:
R-CO-NH₂ + R'-NH₂ → R-CO-NH-R' + NH₃
(amide) (amine) (new amide) (ammonia)
Aldehyde condensation (what Stahl claims):
Code:
R-CO-NH₂ + R'-CHO → R-CO-N=CH-R' + H₂O
(amide) (aldehyde) (imine/Schiff base)
These are fundamentally different reactions with different:
• Mechanisms
• Electrophiles/nucleophiles
• Catalytic requirements
• Products
3. The AI Hallucination Problem
Quantamide quotes "AI" saying proline can:
• "Support protonation and nucleophilic attack"
• Act as a "co-catalyst"
• "Stabilize transition states through hydrogen bonding"
This is classic AI confabulation - mixing together:
• Real proline catalysis mechanisms (aldol reactions, Michael additions)
• Amide chemistry concepts
• Schiff base formation
• Into a word salad that sounds plausible but is chemically nonsensical
The AI doesn't understand:
• The concentration problem (15mg proline in 3g barley = 0.5% w/w)
• That proline catalysis requires specific conditions (heat, neat, long time)
• That transamidation and aldehyde condensation are different reactions
4. The "4-Hydroxy Group" Confusion
Quantamide mentions:
> "Prolines 4-hydroxy group while increasing stability can also influence the water-bridging network"
Problems:
•
Regular L-proline doesn't have a 4-hydroxy group
• They're confusing it with
4-hydroxyproline (a different amino acid)
• 4-Hydroxyproline is found in collagen, not typically in plants
• This is a completely different compound
This reveals they don't actually understand the chemistry - they're just pattern-matching terms from papers.
5. The "Faux Hydrolysis" Nonsense
> "proline is capable of performing a faux hydrolysis on lysergamides, even the dangerous ones, making them safe"
What does this even mean?
• "Faux hydrolysis" is not a real chemistry term
• If proline hydrolyzed lysergamides, it would
destroy them, not "make them safe"
• This is word salad
What's Actually in Young Barley
Amino acid content of barley grass (typical):
• Total protein: ~30% dry weight
• Total free amino acids: ~2-5% of that
• Proline: One of many amino acids present
In 3 grams of barley powder:
• ~15mg proline (Quantamide's claim) = 0.5% w/w
• That's 0.13 mmol proline
• Compare to: ~1 mg LSA = 0.003 mmol
• Ratio: ~43:1 (proline:LSA)
Even if proline did catalyze this reaction (it doesn't under these conditions):
• You'd need the reaction to work in water (it doesn't - 14% yield)
• At room temperature (paper used 150°C)
• In 10 minutes (paper used 36 hours)
Skorpio's Devastating Critique
Every point Skorpio makes is correct:
1.

Proline catalysis doesn't work in water
2.

Requires 150°C heating for 36 hours
3.

Transamidation ≠ aldehyde condensation
4.

The paper's conditions don't match Stahl's at all
Quantamide's response is to:
• Quote more AI-generated text
• Misidentify chemical groups (4-hydroxy proline)
• Invent terms ("faux hydrolysis")
• Not address any of the actual criticisms
The Real Function of Proline (If Any)
What proline MIGHT do in barley:
• Part of normal plant metabolism
• Osmolyte (stress response)
• Precursor to other compounds
• Nutritional amino acid
What it DOESN'T do:
• Catalyze room-temperature aqueous aldehyde-amide condensations
• "Weaken amide bonds" in LSA
• Perform "faux hydrolysis"
• Enable LSI formation
The Pattern Here
This is
exactly what happens when people:
1.
Start with a desired conclusion (barley makes LSI)
2.
Google for papers that might support it
3.
Find something vaguely related (proline catalysis)
4.
Ignore all the details that show it doesn't apply
5.
Ask AI to justify it (AI hallucinates plausible-sounding explanations)
6.
Present it as "science"
Bottom Line
The proline argument is complete nonsense because:
1.

Proline-catalyzed transamidation requires 150°C, neat conditions, 36 hours
2.

Works poorly in water (14% vs 99% yield)
3.

Transamidation is a different reaction than aldehyde condensation
4.

Quantamide confused proline with 4-hydroxyproline
5.

AI-generated explanations are not chemistry
6.

"Faux hydrolysis" is meaningless technobabble
Skorpio systematically demolished every aspect of this claim.
The fact that Quantamide responded by quoting
more AI text instead of addressing the actual chemistry tells you everything you need to know about the quality of this "evidence."
This is the scientific equivalent of:
• "I found a paper about catalysis!"
• "But that paper shows it doesn't work in your conditions"
• "Well, AI says it might work anyway!"
Not how chemistry works.
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Claude
In your defense, Quantamide, only one of your posts contains AI text.