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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1619469Generated: November 2, 2026

Acetaldehyde → 1-Methyl-1,2,3,4-tetrahydro-beta-carboline-3-carboxylic acid

https://huagongshe.com/reaction/1619469

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetaldehydeHCID 177—
ReactantL-TryptophanHCID 6305—
SolventSulfuric AcidHCID 1118—
Product1-Methyl-1,2,3,4-tetrahydro-beta-carboline-3-carboxylic acidHCID 7353069%

Reaction Steps

L-tryptophan (5.10 g, 25 mmol), H2SO4 (0.01 M, 30 ml) and 40% acetaldehyde (9 ml) were added in a 250 ml round-bottom flask, and then stirred and reacted at room temperature for 8 h. After filtration, wash with water and drying, white solids (4.0 g, 69%) were obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08772311B2
Source datasetuspto-grants-2014_07
ORD IDord-60e9dfb5241d42b3a6bfe60e4c0a460c
Source noteuspto-grants-2014_07