Squarylium derivatives and preparation thereof

Details Squarylium derivatives and preparation thereof Squarylium derivatives and preparation thereof

1990-09-24

1992-04-21

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548570, 560 43, 560 44, 564307, C07C22520, C07D20712, C07D20708

Patent

active

051069970

ABSTRACT:
A novel squarylium derivative represented by general formula (I) and a process for preparing the same are described: ##STR1## wherein X and Z are defined in the specification. This squarylium derivative exhibits high nonlinearity and is excellent in thermal resistance, light resistance, storage stability and processability, so that it can be used for preparation of nonlinear optical elements.

REFERENCES:
patent: 4607124 (1986-08-01), Kazmaier et al.
patent: 4626485 (1986-12-01), Kin
patent: 4751327 (1988-06-01), Kazmaier et al.
patent: 4908289 (1990-03-01), Tanaka et al.
Noller; Chemistry of Organic Compounds, 3rd ed., (1965), pp. 252-254, W. B. Saunders Co.-Philadelphia.
Harrison et al., Compendium of Organic Synthetic Methods, p. 251 (1971), Wiley-Interscience, N.Y.
Weygand/Hilgetag; Preparative Organic Chemistry, (1972), p. 458, John Wiley & Sons, N.Y.

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