Methyl iodide → 3-Hydroxy-1-methyl-1H-benzo[4,5]thieno[3,2-d]pyrimidine-2,4-dione

HRID 550722Notes

Reaction equation

COC1C=C(OC)C=CC=1C[O:6][N:7]1[C:12](=[O:13])[C:11]2[S:14][C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=3[C:10]=2[NH:9][C:8]1=[O:21].[CH3:28]I>>[OH:6][N:7]1[C:12](=[O:13])[C:11]2[S:14][C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=3[C:10]=2[N:9]([CH3:28])[C:8]1=[O:21]

Participants

Reactant 2

HCID 6328Methyl iodide

HCID 672009343-(2,4-Dimethoxy-benzyloxy)-1H-benzo[4,5]thieno[3,2-d]pyrimidine-2,4-dione

Product 1

HCID 115578403-Hydroxy-1-methyl-1H-benzo[4,5]thieno[3,2-d]pyrimidine-2,4-dione

Procedure

3-(2,4-Dimethoxy-benzyloxy)-1H-benzo[4,5]thieno[3,2-d]pyrimidine-2,4-dione was alkylated with methyl iodide according to procedure B2. The crude intermediate was deprotected via general procedure D1 to give the title compound which was purified by mass-triggered preparative HPLC. 1H NMR (d6-DMSO, 300 MHz) δ 3.76 (s, 3H); 7.33 (dd, J=7 Hz, 1H); 7.42 (dd, J=7 Hz, 1H); 7.93 (d, J=8 Hz, 1H); 8.27 (d, J=8 Hz, 1H); Retention time=1.81 min., m/z=249.0.

Sources & evidence

ORD record: ord-79617596602a488fa6e76c7610fe59a0
Source dataset: uspto-grants-2011_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07947691B2

Reaction notes

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