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Abstract 3‐Chloro‐4,5‐dihydrofuran can be easily substituted in the 2‐position by metalation with butyllithium followed by treatment with an electrophilic reagent. The resulting derivatives may be dehalogenated to give compounds where the original ring structure is either retained or opened. In the latter case alk‐3‐yne‐1‐ols, and 1‐hydroxy‐4‐alkanones are formed.
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Schlosser et al. (1973) studied this question.
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