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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 421959Generated: November 2, 2026

Formaldehyde → Dimethyl 13-cyclohexyl-5-methyl-6,7-dihydro-5H-indolo[1,2-d][1,4]benzodiazepine-6,10-dicarboxylate

https://huagongshe.com/reaction/421959

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantWaterHCID 962—
ReactantSodium cyanoborohydrideHCID 5003444—
Reactantdimethyl 13-cyclohexyl-6,7-dihydro-5H-indolo[1,2-d][1,4]benzodiazepine-6,10-dicarboxylateHCID 66673930—
SolventAcetic AcidHCID 176—
SolventMethanolHCID 887—
SolventTriethylamineHCID 8471—
SolventEthyl AcetateHCID 8857—
ProductDimethyl 13-cyclohexyl-5-methyl-6,7-dihydro-5H-indolo[1,2-d][1,4]benzodiazepine-6,10-dicarboxylateHCID 66674609—

Reaction Steps

Dimethyl 13-cyclohexyl-6,7-dihydro-5H-indolo[1,2-d][1,4]benzodiazepine-6,10-dicarboxylate was dissolved in anhydrous MeOH (0.05M) and HOAc was added. the mixture was treated with a 37% solution of formaldehyde in water (1.2 eq.), then NaCNBH3 (1.2 eq.) was added. The solution was stirred for 2 h at RT. The product was isolated by flash chromatography (PE:EtOAc, 9:1, 0.5% NEt3). After evaporation of the solvents a colourless solid was obtained (quant.). (ES+) m/z 447 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08101595B2
Source datasetuspto-grants-2012_01
ORD IDord-40eaae7400c54ce1a0540d9881934229
Source noteuspto-grants-2012_01