| abstract |
CYCLIC ORGANOMETALLIC COMPOUNDS HAVING ONE OF THE FOLLOWING STRUCTURAL FORMULAS: R2-ME(-R1)<(-O-CH2-)2>C<(-CH2)2>X (1) R2-ME(-R1)<(-O-CH2-C(-R)(-Y)-Z-) WHEREIN ME IS A GROUP IV-A METAL; X IS O, S, OR CH2; Y IS EITHER NO2, OH, CF3, OR CH2OH; Z IS OCH2 OR IS NH OR OCH2 WHEN Y IS CH2OH; R IS AN ALKYL GROUP; AND EACH R1 AND R2 INDIVIDUALLY IS ALKYL, ARYL, CYCLOALKYL, ARALKYL, AND ALKARYL; AND THE METHOD OF PREPARATION. THE COMPOUNDS ARE PARTICULARLY USEFUL AS CATALYSTS FOR REACTIONS INVOLVING ISOCYANATES OR ISOTHIOCYANATES. |