Cyclobutanetetracarboxylate compound and preparation method...

Details Cyclobutanetetracarboxylate compound and preparation method... Cyclobutanetetracarboxylate compound and preparation method...

2008-07-22

2008-07-22

Parsa, Jafar (Department: 1621)

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

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

11888703

ABSTRACT:
The invention provides a cyclobutanetetracarboxylate compound of general formula (I) and a preparation method thereof:in which R and R1are as defined in the specification.

REFERENCES:
patent: 3139395 (1964-06-01), Griffin
Buddrus et al., Distinction of symmetrically substituted carboxylic compounds, (Chemische Berichte, (1998), 121, (2) 295-297.
Shaikhrazieva et al., Photoinitiated addition of maleic anhydride (Zhurnal organicheskoi Khimii., (1972), 8 (2) 377-382.
Scharf et al., Tetracarbonylmolybdenum (Angewandte Chemie, International Edition, (1970), 9 (10) 810.
Maier et al., samll rings, 77 Generation and trapping of tetramethyl cyclobutadienetetracarboxylate (Chemische Berichte., (1993), 126, 1827-33.
Ohga et al., Photochemistry of alph, beta-unsaturated gamma-lactones (Bulletin of the chemical society of Japan (1970), 43 (11), 35-05-10.
Ding et al., Dongbei Shida Xuebao (Ziran Kexueban (2001), 33 (4) 61-65).

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