Method of preparing benzoxazines

Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent

Reexamination Certificate

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C544S073000

Reexamination Certificate

active

07973158

ABSTRACT:
This invention relates to a novel synthesis for the preparation of benzoxazine components from phenolic components, aldehyde components, and amine components in a solvent other than toluene.

REFERENCES:
patent: 5543516 (1996-08-01), Ishida
patent: 2003/0018131 (2003-01-01), Davis et al.
patent: 2004/0068084 (2004-04-01), Hwang et al.
patent: 2005/0042961 (2005-02-01), Lehmann et al.
patent: 1451679 (2003-10-01), None
patent: 1380607 (2004-01-01), None
patent: 102003082117 (2003-03-01), None
patent: 2005-213301 (2005-08-01), None
patent: WO 03/042196 (2003-05-01), None
patent: WO 2005/000955 (2005-01-01), None
patent: WO 2005/019291 (2005-03-01), None
Burke et al. Journal of Organic Chemistry (1964), 29(4), 909-12.

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