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Borane complexes of 2-(1-Methyl-1,2,5,6-tetra-hydropyridin-3-yl)benzoxazoles

✍ Scribed by Myung Hee Jung; Jewn-Giew Park; Bok-Sim Ryu; Kui-Woong Cho

Publisher: Journal of Heterocyclic Chemistry
Year: 1999
Tongue: English
Weight: 345 KB
Volume: 36
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570360215

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✦ Synopsis

Abstract

2‐Pyridin‐3‐ylbenzoxazoles were synthesized by the reaction between 3‐pyridinecarboxaldehyde and substituted o‐aminophenols in the presence of iodobenzene diacetate. The resulting benzoxazoles 3 were treated with methyl iodide to give the corresponding pyridinium salts 4 which underwent the hydride reduction with sodium borohydride or sodium cyanoborohydride to produce 2‐(1‐methyl‐1,2,5,6‐tetrahy‐dropyridin‐3‐yl)benzoxazole borane complex derivatives.

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