Disclosed is a process for preparing chiral compounds of the formula (I) ##STR1## wherein: X.sup.1 and X.sup.2 are independently F or Cl; and E is --SO.sub.2 R.sup.2, wherein R.sup.2 is C.sub.1 -C.sub.6 alkyl, --C.sub.6 H.sub.4 CH.sub.3 or --CF.sub.3 ; its enantiomer and racemates thereof, useful in the synthesis of tetrahydrofuran azole antifungals. Novel compounds of the formula ##STR2## wherein: X.sup.1 and X.sup.2 are independently F or Cl; B represents --C(O)Q* or --CH.sub.2 OR"; Q* represents a chiral auxiliary group; R" represents a hydroxy protecting group selected from --CH.sub.2 C.sub.6 H.sub.5, or --C(O)R.sup.1, wherein R.sup.1 is C.sub.1 -C.sub.6 alkyl; and A represents Cl, Br, I or triazolyl; are also disclosed.

Se divulga un proceso para preparar los compuestos chiral del ## del ## STR1 del fórmula (i) en donde: X.sup.1 y X.sup.2 son independientemente F o cl; y E es -- SO.sub.2 R.sup.2, en donde R.sup.2 es C.sub.1 - alkyl C.sub.6, -- C.sub.6 H.sub.4 CH.sub.3 o -- CF.sub.3; su enantiomer y racemates de eso, útil en la síntesis de los antifungals del azole del tetrahydrofuran. Compuestos de la novela del ## del ## STR2 del fórmula en donde: X.sup.1 y X.sup.2 son independientemente F o cl; B representa -- c(o)q * o -- CH.sub.2 O "; Q * representa a grupo auxiliar chiral; R "representa a grupo de protección hydroxy seleccionado -- CH.sub.2 C.sub.6 H.sub.5, o -- de C(O)R.sup.1, en donde R.sup.1 es C.sub.1 - alkyl C.sub.6; y A representa el cl, el Br, I o triazolyl; también se divulgan.

 
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