Abstract
The thermal rearrangement of 3-O-allyl-α4-norpyridoxol derivatives (II) resulted in the formation of the ortho-Claisen rearrangement products and the para-Claisen rearrangement product. The former compounds (IIIa, IVa and Va) were subsequently transformed into 2, 3-dihydrofuro (2, 3-c) pyridine (VIa). Hydrolysis of the benzyl ether and the t-butyl ether of the rearrangement products (III, IV and V) with hydrochloric acid produced 4-propenyl-α4-norpyridoxols (XII, XIII and XIV). No significant anticoccidial activity was shown by these compounds.
