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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 66745Generated: October 29, 2026

Phosphorus oxychloride → HCID 20528962, compound

https://huagongshe.com/reaction/66745

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
ReactantHCID 20528919HCID 20528919—
ReactantSodium NitriteHCID 23668193—
ProductHCID 20528962HCID 20528962—

Reaction Steps

The 2-amino substituent of Step A product when treated with sodium nitrite as described in Step E of Preparation 81 is converted to the 2-hydroxy group. Treatment of the 2-hydroxy-3-morpholino-6-methopxypyrazine with phosphorus oxychloride by Preparation 13, Step B method, gives 2-chloro-3-morpholino-6-methoxypyrazine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04343802
Source datasetuspto-grants-1982_08
ORD IDord-246a6856eb474f1f861fd9865d10550f
Source noteuspto-grants-1982_08