Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dy

Details Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dy Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dy

1992-01-07

1993-02-23

Higel, Floyd D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544148, 546197, 562441, 562457, 562458, 562491, 534725, 549 45, 549 47, C07D49304, C07D49314, C09B 5700, D06P 354

Patent

active

051891816

ABSTRACT:
A process for the preparation of a polycyclic dye of the Formula (1): ##STR1## by reacting a substituted acetic acid of the Formula (2): ##STR2## with a compound of the Formula (3): ##STR3## and oxidation of the intermediate leuco compound to dehydrogenate the peripheral heterocyclic rings wherein

REFERENCES:
patent: 2756254 (1956-07-01), Kesslin
patent: 3038935 (1962-06-01), Gerber et al.
patent: 3499008 (1970-03-01), Talet et al.
patent: 3703597 (1972-11-01), Rothweiler
patent: 3766260 (1973-10-01), Carney et al.
patent: 3786085 (1974-01-01), Dickel et al.
patent: 4115404 (1978-09-01), Greenhalgh et al.
patent: 4333887 (1982-06-01), Carey et al.
patent: 4650882 (1987-03-01), Kenyon et al.
patent: 4680417 (1987-07-01), Kenyon et al.
patent: 5077416 (1991-12-01), Ueda et al.
patent: 5084580 (1992-01-01), Kenyon et al.
Fuerstenwerth et al., Chemical Abstracts, vol. 108, #152148r (1988).
Kenyon et al. V, Chemical Abstracts, vol. 105, #192863q (1986).
Greenhalgh et al. II, Chemical Abstracts, vol. 87, #186078f (1977).
Greenhalgh et al. III, Chemical Abstracts, vol. 95, #221293m (1981).
Greenhalgh et al. IV, Chemical Abstracts, vol. 94, #104878z (1981).
Kenyon et al. VI, Chemical Abstracts, vol. 104, #70285m (1986).
P. G. Farrell et al., "The Formation of Malononitrile Derivatives in the Reaction of Tetracyanoethylene with NN-Dialkylanilines" J. Chem. Soc. (C) 1970, pp. 1394-1396.

Affiliated with

Also associated with

Rating

Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2206479