Acetic Anhydride → 9-acetoxy-1,2-dihydro-4,4-dimethyl-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran

HRID 1579095Notes

Reaction equation

[CH3:1][C:2]1([CH3:25])[C:7]2[S:8][CH2:9][CH2:10][C:6]=2[C:5]2[C:11]([OH:24])=[CH:12][C:13]([CH:15]([CH:17]([CH3:23])[CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[CH3:16])=[CH:14][C:4]=2[O:3]1.[C:26](OC(=O)C)(=[O:28])[CH3:27]>>[C:26]([O:24][C:11]1[C:5]2[C:6]3[CH2:10][CH2:9][S:8][C:7]=3[C:2]([CH3:1])([CH3:25])[O:3][C:4]=2[CH:14]=[C:13]([CH:15]([CH:17]([CH3:23])[CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[CH3:16])[CH:12]=1)(=[O:28])[CH3:27]

Participants

Reactant 2

HCID 7918Acetic Anhydride

HCID 2135232H-Thieno(2,3-c)(1)benzopyran-9-ol, 1,4-dihydro-7-(1,2-dimethylheptyl)-4,4-dimethyl-

Product 1

HCID 215579079-acetoxy-1,2-dihydro-4,4-dimethyl-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran

Procedure

By reacting 1,2-dihydro-4,4-dimethyl-9-hydroxy-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran with acetic anhydride, there is obtained 9-acetoxy-1,2-dihydro-4,4 -dimethyl-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran.

Sources & evidence

ORD record: ord-09e057bf6da44075ac752049c78025f7
Source dataset: uspto-grants-1976_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US03940421

Reaction notes

Loading…