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11.12.1.4.2.1 Method 1: Cyclization of N-Phenacylnitrilium Salts

DOI: 10.1055/sos-SD-011-00557

Boyd, G. V.Science of Synthesis, (200211437.

Desyl chloride (51) reacts with nitriles in the presence of tin(IV) chloride to yield 2-substituted 4,5-diphenyloxazoles 216 via the nitrilium salts 215 (Scheme 95).[‌162‌] The synthesis fails when R1=CH2Cl or CH2CH2Cl.

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