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19.5.15.2.2 Variation 2: Reactions with Two Nitrile Molecules

DOI: 10.1055/sos-SD-019-00272

Collier, S. J.; Langer, P.Science of Synthesis, (200419407.

There are several one-pot reactions which use two nitrile molecules; for example, the cyclization of dilithiated 2,3-dimethylbuta-1,3-diene 16 with 2 equivalents of benzonitrile (Scheme 6).[‌22‌] In this reaction, each nucleophilic center reacts with one nitrile molecule to give a 2:1 condensation product which subsequently undergoes cyclization to give the bicyclic product 17 in 45% yield. The base-induced oligomerization of glycolonitrile (18) proceeds by the cyclization of two nitrile molecules to give the substituted oxazoles 19 (Scheme 7).[‌23‌]

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