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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1158800Generated: October 25, 2026

(4E)-N-Methoxy-6-methyl-3,4-dihydro-2H-1-benzopyran-4-imine → 6-Chloro-7-methyl-3,4-dihydro-2H-1-benzopyran-4-amine

https://huagongshe.com/reaction/1158800

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(4E)-N-Methoxy-6-methyl-3,4-dihydro-2H-1-benzopyran-4-imineHCID 86605441—
Reactant6-Chloro-7-methylchroman-4-one O-methyl oximeHCID 86605442—
Product6-Chloro-7-methyl-3,4-dihydro-2H-1-benzopyran-4-amineHCID 16643029—

Reaction Steps

The title compound was prepared using the procedure as described in Example 7B, substituting the product of Example 13A for the product of Example 7A. 1H NMR (300 MHz, CDCl3) δ 7.27 (s, 1H), 6.68 (s, 1H), 4.15-4.29 (m, 2H), 3.98 (m, 1H), 2.29 (s, 3H), 2.07-2.17 (m, 1H), 1.75-1.85 (m, 1H). MS (DCI) m/e 198(M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07812019B2
Source datasetuspto-grants-2010_10
ORD IDord-d659bab87a5143e2875e575db3d612df
Source noteuspto-grants-2010_10