Incorporation of La3+ in an Organic Network. A Polyphenol-Derived Solid Bronsted-Base Catalyst

Treatment of anthracenebisresorcinol 1(a tetraphenol) with La(OPr)3 in THF affords an amorphous 1:2 (1 to La) coordination polymer (La host). It catalyzes typical basepromoted reactions such as Michael, nitroaldol, and, less effectively, aldol reactions, where the insoluble catalyst (La host) can be readily recovered and repeatedly used.