alpha-Bromo-2-nitrotoluene → 4,4,5,5-Tetramethyl-2-[4-(2-nitro-benzyloxy)-phenyl]-[1,3,2]dioxaborolane

HRID 133419Notes

Reaction equation

HRID 133419 reaction equation
Br[CH2:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[N+:9]([O-:11])=[O:10].[CH3:12][C:13]1([CH3:27])[C:17]([CH3:19])([CH3:18])[O:16][B:15]([C:20]2[CH:25]=[CH:24][C:23]([OH:26])=[CH:22][CH:21]=2)[O:14]1>>[CH3:18][C:17]1([CH3:19])[C:13]([CH3:12])([CH3:27])[O:14][B:15]([C:20]2[CH:25]=[CH:24][C:23]([O:26][CH2:2][C:3]3[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=3[N+:9]([O-:11])=[O:10])=[CH:22][CH:21]=2)[O:16]1

Participants

3

Reactant 2

HCID 77569alpha-Bromo-2-nitrotolueneHCID 27346244-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenol

Product 1

HCID 671102054,4,5,5-Tetramethyl-2-[4-(2-nitro-benzyloxy)-phenyl]-[1,3,2]dioxaborolaneYield 62%

Procedure

Alkylation of 1-Bromomethyl-2-nitro-benzene with 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenol was carried out according to procedures in Step 5A for Example 3.32 to give 4,4,5,5-Tetramethyl-2-[4-(2-nitro-benzyloxy)-phenyl]-[1,3,2]dioxaborolane in 62% yield. 1H NMR (400 MHz, CHLOROFORM-D) δ ppm 1.3 (s, 12 H) 5.5 (s, 2 H) 7.0 (d, J=8.6 Hz, 2 H) 7.5 (m, 1 H) 7.7 (m, 1 H) 7.8 (d, J=8.6 Hz, 2 H) 7.9 (dd, J=7.8, 1.0 Hz, 1 H) 8.2 (dd, J=8.1, 1.3 Hz, 1 H).

Sources & evidence

ORD record
ord-eb35abe45ccc4696bd203bbbc4ea28be
Source dataset
uspto-grants-2008_06
Patent number
US07390833B2

Reaction notes

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