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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2166020Generated: October 31, 2026

Acetaldehyde → HCID 56621722, compound

https://huagongshe.com/reaction/2166020

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetaldehydeHCID 177—
ReactantPiperidineHCID 8082—
Reactanttert-Butyl 4-chloro-3-oxobutyrateHCID 2724514—
ProductHCID 56621722HCID 56621722—

Reaction Conditions

Temperature-20 °C

Reaction Steps

1.5 ml of piperidine are added dropwise to a stirred mixture of 212 g (1.1 mol) of tert.-butyl 4-chloro-3-oxobutyrate and 97 g (2.2 mol) of acetaldehyde at -20° C. under nitrogen. The mixture is subsequently stirred at -20° C. for six hours and is then worked up analogously to Example 2. Crude yield: 210 g, content according to gas chromatography: 6% of starting material, 52+37% of an isomer mixture of the product. The product is further processed in the crude form.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04943568
Source datasetuspto-grants-1990_07
ORD IDord-5646594816a3403f885d07b8f20a203f
Source noteuspto-grants-1990_07