7,7'-Diamino derivatives of 2,2'-spirodibenzopyranes

Details 7,7'-Diamino derivatives of 2,2'-spirodibenzopyranes 7,7'-Diamino derivatives of 2,2'-spirodibenzopyranes

1981-01-29

1982-08-17

Chan, Nicky

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544230, 546 15, 548407, C07D27301, C07D24104, C07D21118

Patent

active

043450733

ABSTRACT:
Dye intermediates of the formula ##STR1## where R.sup.1 is hydrogen, alkyl of 1 to 12 carbon atoms, phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, methoxy, ethoxy, chlorine or bromine, or phenylalkyl of 7 to 10 carbon atoms, R.sup.2 is hydrogen or R.sup.1 and R.sup.2 together are dimethylene, trimethylene or tetramethylene, which are unsubstituted or substituted by alkyl of 1 to 12 carbon atoms, R.sup.3 and R.sup.5 are hydrogen, alkyl of 1 to 12 carbon atoms, cyano-, chlorine-, methoxy- or ethoxy-substituted alkyl of 2 to 4 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenylalkyl of 7 to 10 carbon atoms or trimethylene which is unsubstituted or substituted by 1 to 3 methyl and is bonded to the carbon atom in the 6-position or 6'-position of the benzene ring, R.sup.4 and R.sup.6 are alkyl of 1 to 12 carbon atoms, cyano-, chlorine-, methoxy- or ethoxy-substituted alkyl of 2 to 4 carbon atoms, phenylalkyl of 7 to 10 carbon atoms, phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, chlorine or bromine, or trimethylene bonded to the carbon atom in the 8-position or 8'-position of the benzene ring, or one or both of the groups ##STR2## are a pyrrolidine, piperidine, morpholine, thiomorpholine, N'-alkylpiperazine (alkyl being of 1 to 4 carbon atoms) or isoindoline radical, and the substituents R.sup.3, R.sup.4, R.sup.5 and R may be identical or different and the rings A and A' may be substituted by alkyl of 1 to 3 carbon atoms.
The dye intermediates give deep bluish-green to green colorations with electron-attracting substances and may be used for the manufacture of pressure-sensitive recording materials.

REFERENCES:
patent: 2978462 (1961-04-01), Berman et al.
patent: 3022318 (1962-02-01), Berman et al.
patent: 3666525 (1972-05-01), Kimura et al.
patent: 3810762 (1974-05-01), Laridon et al.
patent: 3810763 (1974-05-01), Laridon et al.
patent: 3899514 (1975-08-01), Baumann et al.
patent: 3971808 (1976-07-01), Baumann et al.
patent: 4029677 (1977-06-01), Baumann et al.
patent: 4110348 (1978-08-01), Baumann et al.
patent: 4161589 (1979-07-01), Baumann et al.

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