In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Claisen-Schmidt condensation of acetonitrile with aromatic carbonyl compounds, published in 1969, which mentions a compound: 17190-29-3, mainly applied to benzaldehyde Claisen Schmidt condensations; Claisen Schmidt condensations benzaldehyde; acetophenone Claisen Schmidt condensations; benzophenone Claisen Schmidt condensations, Synthetic Route of C9H9NO.
Treatment of BzH with MeCN containing Na gave PhCH2OH, PhCH(OH)CH2CN and a small amount PhCH:CHCN; BzMe gave PhC(OH)(Me)CH2CN at room temperature and PhCMe:CHCN at reflux; and BzPh gave Ph2C:CHCN at room temperature and, in higher yield, at reflux.
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Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics