5-tert-Butyl 2-ethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4H)-dicarboxylate → 1,1-Dimethylethyl 6,7-dihydro-2-(hydroxymethyl)thieno[3,2-c]pyridine-5(4H)-carboxylate

HRID 2216559Notes

Reaction equation

HRID 2216559 reaction equation
[S:1]1[C:9]2[CH2:8][CH2:7][N:6]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:5][C:4]=2[CH:3]=[C:2]1[C:17](OCC)=[O:18].[H-].[H-].[H-].[H-].[Li+].[Al+3]>>[OH:18][CH2:17][C:2]1[S:1][C:9]2[CH2:8][CH2:7][N:6]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:5][C:4]=2[CH:3]=1

Participants

3

Reactant 2

HCID 118454155-tert-Butyl 2-ethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4H)-dicarboxylateHCID 21226445Aluminium lithium hydride

Product 1

HCID 118456061,1-Dimethylethyl 6,7-dihydro-2-(hydroxymethyl)thieno[3,2-c]pyridine-5(4H)-carboxylateYield 93.3%

Procedure

tert-butyl 2-(hydroxymethyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-carboxylate was prepared according to the procedure outlined in Example 1, (Step 2). Starting from 5-tert-butyl 2-ethyl 6,7-dihydrothieno[3,2-c]pyridine-2,5(4H)-dicarboxylate (1.0 g, 3.21 mmol) and LiAlH4 (500 mg, excess), 807 mg (92% yield) of the alcohol derivative was isolated as white liquid. (M+H) 270.

Workup

  1. customtert-butyl 2-(hydroxymethyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-carboxylate was prepared

Sources & evidence

ORD record
ord-dda9d45c11464513964a952f9b891abb
Source dataset
uspto-grants-2006_09
Patent number
US07112582B2

Reaction notes

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