Formaldehyde → Benzoxazines

Participants

Reaction Steps

In FIG. 6A, BPA (10 g, 43.8 mmol), methanal (5.26 g, 175 mmol) and 3-aminopropyl-triethoxysilane (19.4 g, 87.6 mmol) are mixed in chloroform (100 mL) for reaction at 85 Celsius degrees (° C.) for 24 hours (hr). The product obtained after the reaction do not need to be further purified. The product is directly condensed to obtain an anticipated product Bz-BES (yield: 75%). Elemental analysis calcd (%) for C37H62N2O8Si2: C 61.83, H 9.63, N 3.89; found C 61.70, H 8.67, N 3.81.

Provenance & Evidence