1,3-Propanediol → 2-(4-Bromophenyl)-2-(1-methylethyl)-1,3-dioxane

HRID 361465Notes

Reaction equation

HRID 361465 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[O:12])[CH:9]([CH3:11])[CH3:10])=[CH:4][CH:3]=1.[CH2:13](O)[CH2:14][CH2:15][OH:16]>>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2([CH:9]([CH3:10])[CH3:11])[O:16][CH2:15][CH2:14][CH2:13][O:12]2)=[CH:6][CH:7]=1

Participants

3

Reactant 2

HCID 104421,3-PropanediolHCID 150747831-(4-Bromophenyl)-2-methylpropan-1-one

Product 1

HCID 211863532-(4-Bromophenyl)-2-(1-methylethyl)-1,3-dioxaneYield 42%

Procedure

Using an analogous procedure to that described in Example 62, part (i), but starting from 1-bromo-4-(2-methylpropanoyl)benzene and 1,3-propanediol there was thus obtained (in 42% yield) 2-(4-bromophenyl)-2-isopropyl-1,3-dioxane (4.25g), b.p. 116° C. at 0.4 mm Hg; 1H NMR (acid free CDCl3): 0.8 (d, 3 H), 1.15-1.25 (m, 1 H), 1.85 (m, 2 H), 2.0-2.1 (m, 1 H), 3.68 (d of t, 2 H), 3.75-3.85 (m, 2 H) 7.15-7.25 (m, 2 H), 7.45-7.55 (m, 2 H): mass spectrum (CI+) 285 (M+H)+.

Sources & evidence

ORD record
ord-91be9f266d9f454481dd78eeb42ebf97
Source dataset
uspto-grants-1999_02
Patent number
US05866568

Reaction notes

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