ethyl 5-hydroxypent-2-ynoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from (S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine and 5-hydroxy-pent-2-ynoic acid ethyl ester employing the procedure described in Example 105. [αa]D25 +6.40 (c 0.5, DMSO).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from 5-(tetrahydro-pyran-2-yloxy)-pent-2-ynoic acid ethyl ester employing p-toluenesulfonic acid in ethanol.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from (S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine and 5-hydroxy-pent-2-ynoic acid ethyl ester employing the procedure described in Example 105. [αa]D25 +6.40 (c 0.5, DMSO).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from 5-(tetrahydro-pyran-2-yloxy)-pent-2-ynoic acid ethyl ester employing p-toluenesulfonic acid in ethanol.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from (S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine and 5-hydroxy-pent-2-ynoic acid ethyl ester employing the procedure described in Example 105. [αa]D25 +6.40 (c 0.5, DMSO).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared from 5-(tetrahydro-pyran-2-yloxy)-pent-2-ynoic acid ethyl ester employing p-toluenesulfonic acid in ethanol.