Process for preparing 3-isochromanone

Details Process for preparing 3-isochromanone Process for preparing 3-isochromanone

2005-05-03

2005-05-03

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

06888008

ABSTRACT:
A process for the preparation of 3-isochromanone which comprises contacting an o-xylene-α,α′-dihalide with carbon monoxide, in the presence of a catalyst and a hindered amine base in a liquid medium comprising water and a tertiary alcohol.

REFERENCES:
patent: 4424394 (1984-01-01), Schneider
patent: 4713484 (1987-12-01), Epstein
patent: 5886211 (1999-03-01), Hirai et al.
patent: A-2410782 (1974-03-01), None
patent: A-2526046 (1974-06-01), None
patent: 0 834 497 (1998-04-01), None
patent: WO 99103365 (1999-03-01), None
patent: WO 98 56784 (1998-12-01), None
patent: WO 99 10335 (1999-03-01), None
J. Org. Chem. (1993) 58, 1538-45.
J. Kiji et al., Chem. Lett. 957-960, 548.
L. Cassar et al., J. Organometallic Chem., 121 (1976) C55-56.
X. Huang et al., Chem. & Ind., Sep. 3, 1990, 548.
V, Grushin et al., Organometallics, 12 (5), 1890-1901 (1993).
T. Ito et al., Bull. Chem. Soc. Japan, 48 (7), 2091-2094 (1975).
D. Bergbreiter et al., J. Mol. Catalysis, 74 (1992) 406-419.
C.W. Kohlpaintner et al., J. Molecular Catalysis A: Chemical, 116 (1997), 259-267.
A. Cowell and J.K. Stille, J. Am. Chem. Soc., 102:12 (Jun. 4, 1980) 4193-4198.
S.C Shim et al., Bull. Korean Chem. Soc., vol. 9, No. 3 (1988), 185-187.
Z. Shanyan et al., J. Molecular Catalysis, vol. 1, No. 2 (1987) 115-119.

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