Polycyclic dioxaborin complexes

Details Polycyclic dioxaborin complexes Polycyclic dioxaborin complexes

1974-10-17

1976-02-03

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603452, C07F 504

Patent

active

039364887

ABSTRACT:
A process for the production of partially saturated gamma-pyrones of the general formula I: ##SPC1##
wherein R represents hydrogen, hydroxy, lower alkyl, or lower alkoxy and n represents 1 or 2, by reacting a suitably substituted tetralone (IIa) or indanone (IIb) with a boron trifluoride compound and acetic anhydride to obtain intermediate boron complexes III, which are reacted with a Vilsmeier reagent prepared from phosphorus oxychloride and dimethylformamide to obtain the partially saturated gamma-pyrones of formula I. The gamma-pyrones I have anti-allergy and anti-secretory activity.

REFERENCES:
patent: 3177240 (1965-04-01), Muetterties
patent: 3383401 (1968-05-01), Woods et al.
patent: 3661907 (1972-05-01), Padmanathan
smith et al. J. Org. Chem., Vol. 35, No. 10, pp. 3220-3223 (1970).

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