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ÎÄÏ׵ķ½·¨ÊÇ:
Inorg. Chem. 2003, 42, 2977-2982

Synthesis of L3. Diisoproylamine (3.8 mL, 27 mmol) and
n-BuLi (11.4 mL, 2.5 M in hexane) were dissolved in a 60 mL of
THF in a Schlenk flask at -78 ¡ãC. After the solution was stirred
for 30 min at -78 ¡ãC, 2-picoline (2.5 mL, 25 mmol) was added to
the solution. The solution was allowed to warm to room temperature
and stirred for 30 min. To the solution was added p-tolualdehyde
(1.0 mL, 8.4 mmol). The resulting solution was stirred overnight
and quenched with water (100 mL). After the reaction mixture was
washed with saturated NaHCO3 (100 mL), CH2Cl2 (100 mL) was
added to extract the dipyridyl compound. The CH2Cl2 layer was
dried over anhydrous MgSO4, concentrated, and chromatographed
on a silica gel column eluting with hexane and diethyl ether (v/v,
1:1). Removal of the solvent gave the product in 36% yield

A similar reaction involving formyl acetate afforded a tripodal ligand of L2


ÎÒµÄÄ¿±êÊǺϳÉL2.

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