Patent · US Expired

Process for the preparation of 2-hydroxy-(9H)-carbazole

US4628106A · kind A · utility

1Cited by

0References

1Claims

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Assignee

Hoechst GmbH · DE

Inventors

Otto E. Schweikert · Kelkheim, DE
Walter Reimann · Hofheim, DE
Werner Wykypiel · Rodgau, DE
Karl E. Mack · Wiesbaden, DE

Key dates

Filing date	Mar 19, 1985
Grant date	Dec 9, 1986
Priority date	—
Expiry date	Mar 19, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D209/88
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for the preparation of 2-hydroxy-(9H)-carbazole. In this process, 1,2,3,4-tetrahydro-7-hydroxy-(9H)-carbazole is dehydrogenated in an inert organic solvent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.