Compounds and synthesis process

Details Compounds and synthesis process Compounds and synthesis process

2006-08-15

2006-08-15

Saeed, Kamal A. (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C564S155000

Reexamination Certificate

active

07091361

ABSTRACT:
Disclosed is a process for preparing a 6-chloro-2,5-dicarbonamido phenol compounds comprising a step employing a 2-alkyl-6-aminobenzoxazole to form a 2-alkyl-6-amino-7-chlorobenzoxazole in which the 2-alkyl group is unbranched at the α carbon. It also provides intermediate compounds useful in the process. The process provides a simple and safe way to prepare 6-chloro-2,5-dicarbonamido phenol compounds in good yield.

REFERENCES:
patent: 5681690 (1997-10-01), Tang et al.
patent: 6201125 (2001-03-01), Begley
patent: 6641990 (2003-11-01), Begley et al.
patent: 1130275 (1968-10-01), None
Adams et al. “Quinone Imides. XVIII. p-Quinonedipivalimides and their Reactions” Journal of the American Chemical Society, 1952, vol. 74, pp. 3660-3664.
T. Kametani, Heterocycles, vol. 27, No. 4, 1988, pp. 881-884.
R. Adams, et al., Quinone Imides, XVIII. p-Quinonedipivalimides and their Reactions, 1952, vol. 74, pp. 3660-3664.

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