Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2214521Generated: October 29, 2026

Formaldehyde → HCID 54698200, compound

https://huagongshe.com/reaction/2214521

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantDiethyl (2-aminoethyl)phosphonateHCID 2733596—
ReactantN-[(3,4-dichlorophenyl)methyl]-4-hydroxy-N,1-dimethyl-5-oxo-2H-pyrrole-3-carboxamideHCID 54697551—
ReactantHCID 69655739HCID 69655739—
SolventMethylenechloride HexaneHCID 21226440—
ProductHCID 54698200HCID 5469820044%

Reaction Steps

3-[(3,4-Dichloro-benzyl-methyl-carbamoyl]-2-hydroxy-acrylic acid methyl ester (Compound 12-B) was treated with paraformaldehyde and (2-aminoethyl)phosphonic acid diethylester as described in the preparation of Compound 12. Trituration with CH2Cl2/hexane gave the title compound (106 mg, 44% yield). 1H NMR (300 MHz, CDCl3) δ: 7.41 (d, 1H, J=8.05), 7.35 (s, 1H), 7.10 (dd, 1H, J=8.05, J=1.47), 4.60 (s, 2H), 4.25 (s, 2H), 4.11 (m, 4H), 3.77 (m, 2H), 3.02 (s, 3H), 2.17 (m, 2H), 1.31 (t, 6H, J=7.32). HRMS (M−H) calcd for C19H24PN2Cl2O6: 477.0749. found: 477.0749.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07109186B2
Source datasetuspto-grants-2006_09
ORD IDord-11145abb8bb74e3690e995f53765e360
Source noteuspto-grants-2006_09