Water → HCID 21447172, compound

HRID 267962Notes

Reaction equation

HRID 267962 reaction equation
C[O:2][C:3]1[C:8]([O:9]C)=[CH:7][C:6]2[C:11]3[CH2:16][CH2:15][N:14]([CH2:17][CH2:18][N:19]4[CH2:24][CH2:23][CH2:22][CH2:21][CH2:20]4)[CH2:13][C:12]=3[C:25](=[O:27])[O:26][C:5]=2[CH:4]=1.O>Br>[OH:2][C:3]1[C:8]([OH:9])=[CH:7][C:6]2[C:11]3[CH2:16][CH2:15][N:14]([CH2:17][CH2:18][N:19]4[CH2:20][CH2:21][CH2:22][CH2:23][CH2:24]4)[CH2:13][C:12]=3[C:25](=[O:27])[O:26][C:5]=2[CH:4]=1

Participants

4

Reactant 2

HCID 962WaterHCID 43224141806-52-4

Product 1

HCID 21447172HCID 21447172, compound

Reagents, catalysts & solvents 1

HCID 260Hydrogen BromideSolvent

Procedure

A solution of 4.7 g. of 1,2,3,4-tetrahydro-8,9-dimethoxy-3-(2-piperidinoethyl)-5H-[1]benzopyrano[3,4-c]pyridin-5-one in 70 cc of 48% HBr was refluxed for 17 hr and cooled. Precipitate was cryst from water affording 2.8 g of product; mp 291°-295° C.

Workup

  1. temperaturecooled

Sources & evidence

ORD record
ord-c7f5e69ec03942e58c5557f769c9811e
Source dataset
uspto-grants-1976_03
Patent number
US03946008

Reaction notes

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