Microwave induced process for the preparation of substituted...

Details Microwave induced process for the preparation of substituted... Microwave induced process for the preparation of substituted...

2006-01-24

2006-01-24

Shippen, Michael L. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C204S157900, C204S157920, C568S651000

Reexamination Certificate

active

06989467

ABSTRACT:
The present invention relates to “a microwave induced process for the preparation of 4-vinylphenols or its derivatives” in which commercially important FEMA GRAS approved perfumery and flavouring vinylphenols (i.e. hydroxystyrenes) namely 4-vinylguaiacol (FEMA GRAS No. 2675) and 4-vinylphenol (FEMA GRAS No. 3739) as well as other useful vinylphenols such as 2,6-dimethoxy-4-vinylphenol, 2-hydroxy-4-vinylphenol, 3-hydroxy-4-vinylphenol etc. by condensation of malonic acid and 4-hydroxyphenylaldehydes or its derivatives.

REFERENCES:
patent: 4316995 (1982-02-01), Pittet et al.
patent: 4868256 (1989-09-01), Aslam et al.
patent: 4868257 (1989-09-01), Aslam et al.
patent: 4933495 (1990-06-01), Aslam et al.
patent: 5072025 (1991-12-01), Vicari et al.
patent: 5087772 (1992-02-01), Sheehan et al.
patent: 5128253 (1992-07-01), Labuda et al.
patent: 5247124 (1993-09-01), Aslam et al.
patent: 5256809 (1993-10-01), Kvakoyszky et al.
patent: 5344963 (1994-09-01), Warm et al.
patent: 5493062 (1996-02-01), Sounik et al.
patent: 5563289 (1996-10-01), Sounik et al.
patent: 6111133 (2000-08-01), Houlihan
patent: 6235507 (2001-05-01), Muheim et al.
patent: 6468566 (2002-10-01), Ago et al.

Affiliated with

Also associated with

Rating

Microwave induced process for the preparation of substituted... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microwave induced process for the preparation of substituted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave induced process for the preparation of substituted... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3540992