✍ Scribed by Lianis, Pygmalion S. ;Rodios, Nestor A. ;Alexandrou, Nicholas E.
No coin nor oath required. For personal study only.
The silver salts la-d react with 9-bromolluome to give both Cand 0-alkylated products 2 and 3. The latter decompose to yield 9-fluorenone and the a-cyanooximes 5. The products 2 upon treatment with NaOH/EtOH eliminate HN02 to a o r d 9-(a-cyanoarylidene)nuorenes 4 in 80% yield. 9-Chloro-9-phe nylfluorene reacts with the salt l a to give only the C-alkylatcd product 6 in 70% yield.
The reaction of nitronate anions'' with several alkylating reagents is of special importance from synthetic and mechanistic aspect *I. Kurosawa et aL3) report on the synthesis of C-alkylation products in the reaction of nitronate ions with organothallium(II1) compounds, and a mechanistic study on a non-chain radicaloid Calkylation of some nitronate anions is presented by Katritzky et aI. ' 1. 2a -d (C-product) T 4a-d (80%)
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## Unusual Reaction of (8-(Dimethylamino)methyl-1-naphthyl) phenylchlorosilane with Fluoren-9-yllithium. Synthesis of Kinetically Stable Dibenzosilafulvene. -The title reaction results in the unexpected formation of compound ( III), which can be formally considered as the first kinetically stabl