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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2106708Generated: October 29, 2026

Dichloromethane → 4-[[2-[2-[[2-(Diethylamino)ethyl]methylamino]ethyl]-1-piperidinyl]carbonyl]-4,9-dihydro-3-methyl-10H-thieno[3,4-b][1,5]benzodiazepin-10-one

https://huagongshe.com/reaction/2106708

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDichloromethaneHCID 6344—
Reactant4-chlorocarbonyl-4,9-dihydro-3-methyl-10H-thieno[3,4-b][1,5]benzodiazepin-10-oneHCID 14209980—
Reactant2-[2-[[2-(Diethylamino)ethyl]methylamino]ethyl]piperidineHCID 15057322—
SolventAcetonitrileHCID 6342—
Product4-[[2-[2-[[2-(Diethylamino)ethyl]methylamino]ethyl]-1-piperidinyl]carbonyl]-4,9-dihydro-3-methyl-10H-thieno[3,4-b][1,5]benzodiazepin-10-oneHCID 1505734622%

Reaction Steps

Prepared analogously to Example 4, but using dichloromethane instead of acetonitrile as solvent, from 4-(chlorocarbonyl)-4,9-dihydro-3-methyl-10H-thieno[3,4-b][1,5]benzodiazepin-10-one and 2-[2-[[2-(diethylamino)ethyl]methylamino]ethyl]piperidine (b.p.0.3 mmHg 92°-95° C.) in a yield of 22% of theory. Colourless crystals, m.p. 131°-133° C. (acetonitrile).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04931436
Source datasetuspto-grants-1990_06
ORD IDord-a6ad5e2da69546eea099c2f53aff027e
Source noteuspto-grants-1990_06