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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2111357Generated: October 27, 2026

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

https://huagongshe.com/reaction/2111357

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
Reactant2486-69-3HCID 288057—
Reactant9-Butyl-2-chloro-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-oneHCID 86623419—
CatalystHydrochloric AcidHCID 313—
SolventWaterHCID 962—
Product4-(9-butyl-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-3-methoxy-benzoic acidHCID 6873860670.1%

Reaction Steps

A mixture of 0.08 g (0.0003 mole) of 9-butyl-2-chloro-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VII-44), 0.060 g (0.00036 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 0.084 g of 4-(9-butyl-5-methyl-6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepin-2-ylamino)-3-methoxy-benzoic acid (I-44a) as an off-white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07517873B2
Source datasetuspto-grants-2009_04
ORD IDord-cf7ac7bbf36c4068afaba64ea67967e6
Source noteuspto-grants-2009_04