ethyl 4-methoxybut-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-(1,1,3,3-tetramethyl-butyl) -phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 27) and 4-methoxy-but-2-ynoic acid ethyl ester (see Example 106) employing the procedure described in Example 95. [α]D25 −14.80 (c 0.5, CHCl3).

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

Procedure: The title compound was prepared from (S)-5-(4-bicyclo[3.3.1]non-9-yl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 20) and 4-methoxy-but-2-ynoic acid ethyl ester (see Example 106) employing the procedure described in Example 95. [α]D25 −14.55 (c 0.495, CHCl3).

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 4-methoxy-but-2-ynoic acid ethyl ester (Larock, J Org Chem 2002, 67, 9318) employing the procedure described in Example 105. [α]D25 −17.80 (c 0.5, CHCl3).

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

Procedure: To a solution of (S)-5-(4-tert-butyl-phenoxymethyl)-4,5-dihydro-oxazol-2-yl-amine (2.3 g, 9.26 mmol) (prepared according to the procedures employed in Step 1 through 2 of Example 1) in ethanol (35 mL) was added 1.7 g (12.04 mmol) of 4-methoxy-but-2-ynoic acid ethyl ester (prepared in accordance with the procedures as described in Larock, J Org Chem 2002, 67, 9318). This mixture was stirred at reflux for 6 hours and cooled. The reaction mixture was concentrated and loaded onto a silica gel column. Chromatography with 1-10% EtOH/CH2Cl2 provided 2.22 g of the title compound. [α]D25 −18.00 (c 0.5, CHCl3) prepared in accordance with the procedures at reflux for 6 hours cooled The reaction mixture was concentrated

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

Procedure: The title compound was prepared from (S)-5-(4-(1,1,3,3-tetramethyl-butyl) -phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 27) and 4-methoxy-but-2-ynoic acid ethyl ester (see Example 106) employing the procedure described in Example 95. [α]D25 −14.80 (c 0.5, CHCl3).

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

Procedure: The title compound was prepared from (S)-5-(4-bicyclo[3.3.1]non-9-yl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 20) and 4-methoxy-but-2-ynoic acid ethyl ester (see Example 106) employing the procedure described in Example 95. [α]D25 −14.55 (c 0.495, CHCl3).

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 4-methoxy-but-2-ynoic acid ethyl ester (Larock, J Org Chem 2002, 67, 9318) employing the procedure described in Example 105. [α]D25 −17.80 (c 0.5, CHCl3).

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

Procedure: To a solution of (S)-5-(4-tert-butyl-phenoxymethyl)-4,5-dihydro-oxazol-2-yl-amine (2.3 g, 9.26 mmol) (prepared according to the procedures employed in Step 1 through 2 of Example 1) in ethanol (35 mL) was added 1.7 g (12.04 mmol) of 4-methoxy-but-2-ynoic acid ethyl ester (prepared in accordance with the procedures as described in Larock, J Org Chem 2002, 67, 9318). This mixture was stirred at reflux for 6 hours and cooled. The reaction mixture was concentrated and loaded onto a silica gel column. Chromatography with 1-10% EtOH/CH2Cl2 provided 2.22 g of the title compound. [α]D25 −18.00 (c 0.5, CHCl3) prepared in accordance with the procedures at reflux for 6 hours cooled The reaction mixture was concentrated

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

Procedure: The title compound was prepared from (S)-5-(4-(1,1,3,3-tetramethyl-butyl) -phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 27) and 4-methoxy-but-2-ynoic acid ethyl ester (see Example 106) employing the procedure described in Example 95. [α]D25 −14.80 (c 0.5, CHCl3).

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

Procedure: The title compound was prepared from (S)-5-(4-bicyclo[3.3.1]non-9-yl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine (see Example 20) and 4-methoxy-but-2-ynoic acid ethyl ester (see Example 106) employing the procedure described in Example 95. [α]D25 −14.55 (c 0.495, CHCl3).

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 4-methoxy-but-2-ynoic acid ethyl ester (Larock, J Org Chem 2002, 67, 9318) employing the procedure described in Example 105. [α]D25 −17.80 (c 0.5, CHCl3).

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

Procedure: To a solution of (S)-5-(4-tert-butyl-phenoxymethyl)-4,5-dihydro-oxazol-2-yl-amine (2.3 g, 9.26 mmol) (prepared according to the procedures employed in Step 1 through 2 of Example 1) in ethanol (35 mL) was added 1.7 g (12.04 mmol) of 4-methoxy-but-2-ynoic acid ethyl ester (prepared in accordance with the procedures as described in Larock, J Org Chem 2002, 67, 9318). This mixture was stirred at reflux for 6 hours and cooled. The reaction mixture was concentrated and loaded onto a silica gel column. Chromatography with 1-10% EtOH/CH2Cl2 provided 2.22 g of the title compound. [α]D25 −18.00 (c 0.5, CHCl3) prepared in accordance with the procedures at reflux for 6 hours cooled The reaction mixture was concentrated