Abstract
Abstract1,2‐Disubstituted imidazoles react with phosphorus(III) halides in pyridine regioselectively at position 5. The reaction proceeds the more readily, the higher the electron‐donating ability of the 2‐substituent in the starting imidazole. Hitherto unknown dihalo(imidazol‐5‐yl)phosphines have been obtained, and their properties have been studied. Also synthetic methods for the preparation of various monohalo(organyl)(imidazolyl)phosphines have been developed. © 2009 Wiley Periodicals, Inc. Heteroatom Chem 20:289–308, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20550
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