Formaldehyde → Benzoxazines

HRID 351957Notes

Reaction equation

HRID 351957 reaction equation
C[C:2]([C:4]1C=C[C:7](O)=[CH:8][CH:9]=1)=[O:3].[NH2:11][CH2:12][CH2:13][CH2:14][Si](OCC)(OCC)OCC.C=O>C1(C)C=CC=CC=1>[O:3]1[C:2]2[CH:4]=[CH:9][CH:8]=[CH:7][C:14]=2[CH:13]=[CH:12][NH:11]1

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 74694'-HydroxyacetophenoneHCID 13521(3-Aminopropyl)triethoxysilane

Product 1

HCID 17845026BenzoxazinesYield 55%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

This compound was prepared according to the method used for the previous examples by combining 4-hydroxyacetophenone (13.6 g, 100 mmol), 3-aminopropyltriethoxysilane (22.1 g, 100 mmol), paraformaldehyde (6.3 g, 210 mmol), and toluene (150 mL). The final product was a clear, almost colorless liquid. The yield was 55%.

Workup

  1. customThis compound was prepared

Sources & evidence

ORD record
ord-d04d044203974df580139c7d55125c1d
Source dataset
uspto-grants-2004_06
Patent number
US06743852B2

Reaction notes

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