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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2092161Generated: October 31, 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/2092161

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 numberUS08440691B2
Source datasetuspto-grants-2013_05
ORD IDord-574dfd4cd4ae4ec1a803ecf98ba1633d
Source noteuspto-grants-2013_05