Process for preparing photoactive coumarin derivatives

Details Process for preparing photoactive coumarin derivatives Process for preparing photoactive coumarin derivatives

1997-03-07

1998-03-10

Powers, Fiona T.

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

Organic compounds

Diazooxide or diazotate

534557, C07D31120, C07D33506

Patent

active

057262969

ABSTRACT:
Novel processes for the preparation of a new class of coumarin derivatives, which are useful as photoactive compounds in a wide variety of applications including photoresists and other opto-electronic applications, are disclosed and claimed. The process involves a multi-step synthetic method for the preparation of ether, ester, carbonate, or sulfonate derivative of 5-hydroxy, 6-hydroxy, or 7-hydroxy-3-diazo-4-oxo-3,4-dihydrocoumarin starting from the corresponding dihydroxyacetophenone. The compounds formed from the process of the present invention exhibit very high photosensitivity in the deep ultraviolet (DUV) region (ca. 250 nm), and therefore, are useful as photoactive compounds in DUV photoresist formulations.

REFERENCES:
patent: 2859112 (1958-11-01), Sus et al.
patent: 4211791 (1980-07-01), Buckle et al.
patent: 4339552 (1982-07-01), Balanson et al.
patent: 4588670 (1986-05-01), Kelly et al.
patent: 4853315 (1989-08-01), McKean et al.
patent: 4942225 (1990-07-01), Lorenz
patent: 5501936 (1996-03-01), Hosoda et al.
patent: 5532107 (1996-07-01), Oie et al.
patent: 5541033 (1996-07-01), Blakeney et al.
A. Hermodson, W.M. Barker, K.P. Link/Studies of the4-Hydroxycoumarins. Synthesis of the Metagolites and Some Other Derivatives of Warfarin--Journal of Medicinal Chemistry, 1971, vol. 14,No. 2, pp. 167-169.
Chemical Abstracts, 113:68407 (1990).
Chemical Abstracts, 115:244059 (1991).
Buckle et al., J. Med. Chem., 26(2), 251-254, 1983.
Eistert et al., Chem. Ber., 109(10), 3462-3472, 1976.
Hinman et al., J. Am. Chem. Soc., 79, 3789-3800, 1957
Jefferson et al., "Acid-catalyzed Hydrolysis of 4-Diazo-Isothiochroman-3-one, Comparison With the Acyclic Analog and the Corresponding Oxygen System", Can. J. Chem., 75, 56-59 (1997).

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