Carbazole compounds and process for preparing the same

Details Carbazole compounds and process for preparing the same Carbazole compounds and process for preparing the same

1982-09-24

1985-06-04

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

430 58, 430 59, 430 79, 548445, C07D20986

Patent

active

045216053

ABSTRACT:
Carbazole compounds of formula (I) are disclosed, which are useful as photoconductors for electrophotography and fluorescent brightening agent in the field of paints, ##STR1## wherein R represents a C.sub.2.about.4 alkyl group, or a benzyl group; X.sup.1 represents hydrogen, a C.sub.1.about.4 alkyl group, a C.sub.1.about.4 alkoxyl group, a halogen atom, a nitro group, an amino group, a C.sub.1.about.4 alkylamino group or a benzylamino group; and n is an integer 1 or 2. A method of preparing a carbazole compound of formula (II) is also disclosed, in which a phenyl derivative of formula (III) is caused to react with an aldehyde of formula (IV), ##STR2## wherein R represents a C.sub.2.about.4 alkyl group, or a benzyl group; X.sup.2 represents hydrogen, a C.sub.1.about.4 alkyl group, a C.sub.1.about.4 alkoxyl group, a halogen atom, a nitro group; and m is an integer 0 or 1; ##STR3## wherein X.sup.2 represents the same as in the formula (II) and Y represents a triphenylphosphonium group of the formula ##STR4## wherein Z.sup..crclbar. represents a halogen ion, or Y represents a dialkylphosphonate group of the formula

REFERENCES:
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patent: 3955984 (1976-05-01), Kobayashi et al.
patent: 4001130 (1977-01-01), Schinzel et al.
patent: 4184871 (1980-01-01), Oba et al.
patent: 4293492 (1981-10-01), Sasaki et al.
Drefahl, et al., Ber., 95, (1962), pp. 2775-2781.
"The Merck Index", 8th Ed., (1968), pp. 1226-1227.

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