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for 30 min, the reaction mixture was basified with ammonia and extracted with CHCls. The extract was washed with 10% NaOH in order to separate the products into nonphenolic and phenolic fractions. Purification of the nonphenolic material by tie (silica, using 1:1 benzene-acetone as developer) gave 9-benzyloxy-1,2,10-trimethoxvdibenz [de,g] quinolin-7-one (XVI, 47 mg): mp 228" dec (CHCI3-MeOH); ir (KBr) 5.95 (CO), 13.60, 14.45 µ (monosubstituted benzene); nmr 8.82 (1 H, d,

Aus den aromatischen Aldehyden (I) erhält man mit dem Phosphono‐essigsäuretriäthylester (II) die Zimtsäurederivate (III), deren Reduktion mit Boranat zunächst untersucht wird.

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