Process for preparing heterocyclic indene analogs

Details Process for preparing heterocyclic indene analogs Process for preparing heterocyclic indene analogs

2007-01-30

2007-01-30

Anderson, Rebecca (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

10763296

ABSTRACT:
A process for the preparation heterocyclic indene analogs, especially with the preparation of 4-hydroxycarbazole or N-protected 4-hydroxycarbazole, involves cyclocarbonylation followed by saponification. This process avoids high temperatures and high catalyst loadings.

REFERENCES:
patent: 6291685 (2001-09-01), Junghans et al.
patent: 2314699 (2001-02-01), None
patent: 1078923 (2001-02-01), None
Hiday, et al., Advances in Metal-Organic Chemistry, vol. 4, pp. 275-309 , 1995.

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