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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2111336Generated: October 27, 2026

Ethanol → 3-methoxy-4-[9-(2-methoxy-ethyl)-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino]-benzoic acid

https://huagongshe.com/reaction/2111336

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
Reactant2486-69-3HCID 288057—
Reactant2-Chloro-9-(2-methoxy-ethyl)-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-oneHCID 86617578—
CatalystHydrochloric AcidHCID 313—
SolventWaterHCID 962—
Product3-methoxy-4-[9-(2-methoxy-ethyl)-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino]-benzoic acidHCID 6874045168.5%

Reaction Steps

A mixture of 0.108 g (0.0004 mole) of 2-chloro-9-(2-methoxy-ethyl)-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VII-40), 0.08 g (0.00048 mole) of 4-amino-3-methoxy-benzoic acid, 0.5 mL of ethanol, 2 mL of water, and 2 drops of hydrochloric acid was heated at 100 degrees overnight. Upon cooling, a precipitate formed which was collected by filtration to give 0.11 g of 3-methoxy-4-[9-(2-methoxy-ethyl)-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino]-benzoic acid (I-40a) as an off-white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07517873B2
Source datasetuspto-grants-2009_04
ORD IDord-50f08a3f19f641f5b4eb7e0bbb137a07
Source noteuspto-grants-2009_04