Benzofuran derivatives process for their preparation and their u

Details Benzofuran derivatives process for their preparation and their u Benzofuran derivatives process for their preparation and their u

1974-10-11

1977-01-11

Albrecht, Dennis L.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8137, 252542, 252558, 260 40R, 264 78, D01F 214, D01F 216, D06L 312

Patent

active

040024237

ABSTRACT:
New bisbenzofuranes which are connected by a direct bond or a bridgemember being in conjugation with the double bonds of the furane nuclei are obtained by intra- or intermolecular condensation reactions. The products are useful as optical brighteners, especially for detergents.

REFERENCES:
patent: 3697513 (1972-10-01), Siegrist
Abe et al.: Nippon Kagaku Zasshi, vol. 87, pp. 870-876 (1966).
Kobayashi et al.: "Adsorptive Cyclization Reaction", Tetrahedron Letters, No. 1, pp. 71-74, 1971.
Toda et al.: Chemical Abstracts, vol. 56, col. 2366 (1962).

Affiliated with

Also associated with

Rating

Benzofuran derivatives process for their preparation and their u does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1740897