hexanoyl bromide

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: A mixture of 300 g. of aluminum bromide and 250 ml. of 1,2-dibromoethane, cooled in an ice bath and protected from moisture, is saturated with acetylene. To the mixture is added with ice cooling 150 g. of hexanoyl bromide (Example 991) over a period of 20 minutes and the resulting mixture is treated with acetylene until gas uptake ceases. The reaction mixture is poured onto 500 ml. of saturated brine and 500 g. of ice. The resulting mixture is extracted twice with 500 ml. of ether. The combined organic extracts are washed twice with 500 ml. of saturated brine and dried with anhydrous sodium sulfate. To the organic phase is added 5 g. of hydroquinone and the solvent is evaporated in vacuo to yield the crude 1-bromo-trans-1-octen-3-one. A mixture of 300 g The reaction mixture is poured onto 500 ml The resulting mixture is extracted twice with 500 ml The combined organic extracts are washed twice with 500 ml of saturated brine and dried with anhydrous sodium sulfate To the organic phase is added 5 g of hydroquinone and the solvent is evaporated in vacuo

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

Procedure: A mixture of 300 g. of aluminum bromide and 250 ml. of 1,2-dibromoethane, cooled in an ice bath and protected from moisture, is saturated with acetylene. To the mixture is added with ice cooling 150 g. of hexanoyl bromide (Example 991) over a period of 20 minutes and the resulting mixture is treated with acetylene until gas uptake ceases. The reaction mixture is poured onto 500 ml. of saturated brine and 500 g. of ice. The resulting mixture is extracted twice with 500 ml. of ether. The combined organic extracts are washed twice with 500 ml. of saturated brine and dried with anhydrous sodium sulfate. To the organic phase is added 5 g. of hydroquinone and the solvent is evaporated in vacuo to yield the crude 1-bromo-trans-1-octen-3-one. A mixture of 300 g The reaction mixture is poured onto 500 ml The resulting mixture is extracted twice with 500 ml The combined organic extracts are washed twice with 500 ml of saturated brine and dried with anhydrous sodium sulfate To the organic phase is added 5 g of hydroquinone and the solvent is evaporated in vacuo

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: A mixture of 300 g. of aluminum bromide and 250 ml. of 1,2-dibromoethane, cooled in an ice bath and protected from moisture, is saturated with acetylene. To the mixture is added with ice cooling 150 g. of hexanoyl bromide (Example 991) over a period of 20 minutes and the resulting mixture is treated with acetylene until gas uptake ceases. The reaction mixture is poured onto 500 ml. of saturated brine and 500 g. of ice. The resulting mixture is extracted twice with 500 ml. of ether. The combined organic extracts are washed twice with 500 ml. of saturated brine and dried with anhydrous sodium sulfate. To the organic phase is added 5 g. of hydroquinone and the solvent is evaporated in vacuo to yield the crude 1-bromo-trans-1-octen-3-one. A mixture of 300 g The reaction mixture is poured onto 500 ml The resulting mixture is extracted twice with 500 ml The combined organic extracts are washed twice with 500 ml of saturated brine and dried with anhydrous sodium sulfate To the organic phase is added 5 g of hydroquinone and the solvent is evaporated in vacuo

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

Procedure: A mixture of 300 g. of aluminum bromide and 250 ml. of 1,2-dibromoethane, cooled in an ice bath and protected from moisture, is saturated with acetylene. To the mixture is added with ice cooling 150 g. of hexanoyl bromide (Example 991) over a period of 20 minutes and the resulting mixture is treated with acetylene until gas uptake ceases. The reaction mixture is poured onto 500 ml. of saturated brine and 500 g. of ice. The resulting mixture is extracted twice with 500 ml. of ether. The combined organic extracts are washed twice with 500 ml. of saturated brine and dried with anhydrous sodium sulfate. To the organic phase is added 5 g. of hydroquinone and the solvent is evaporated in vacuo to yield the crude 1-bromo-trans-1-octen-3-one. A mixture of 300 g The reaction mixture is poured onto 500 ml The resulting mixture is extracted twice with 500 ml The combined organic extracts are washed twice with 500 ml of saturated brine and dried with anhydrous sodium sulfate To the organic phase is added 5 g of hydroquinone and the solvent is evaporated in vacuo

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

Procedure: Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel, containing 10.81 g (60 mmol) of the prepared hexanoyl bromide, and side arm water condenser fixed with a dry receiving flask, is placed 13.18 g (72 mmol) of sodium 2-(1-methylguanidino)acetate. The round bottomed flask is placed in an ice bath and the hexanoyl bromide is added drop wise. After addition is completed the mixture is shaken and the ice bath is replaced by a heating mantle. The flask is then heated until no more solution is dropping into the receiving flask. This crude distillate is then further fractionally distilled to yield hexanoic 2-(1-methylguanidino)acetic anhydride. Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel The round bottomed flask is placed in an ice bath After addition The flask is then heated until no more solution This crude distillate is then further fractionally distilled

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

Procedure: Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel, containing 10.81 g (60 mmol) of the prepared hexanoyl bromide, and side arm water condenser fixed with a dry receiving flask, is placed 11.03 g (72 mmol) of sodium 2-amino-3-methylpentanoate. The round bottomed flask is placed in an ice bath and the hexanoyl bromide is added drop wise. After addition is completed the mixture is shaken and the ice bath is replaced by a heating mantle. The flask is then heated until no more solution is dropping into the receiving flask. This crude distillate is then further fractionally distilled to yield 2-amino-3-methylpentanoic hexanoic anhydride. Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel The round bottomed flask is placed in an ice bath After addition The flask is then heated until no more solution This crude distillate is then further fractionally distilled

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

Procedure: Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel, containing 10.81 g (60 mmol) of the prepared hexanoyl bromide, and side arm water condenser fixed with a dry receiving flask, is placed 11.03 g (72 mmol) of sodium 2-amino-3-methylpentanoate. The round bottomed flask is placed in an ice bath and the hexanoyl bromide is added drop wise. After addition is completed the mixture is shaken and the ice bath is replaced by a heating mantle. The flask is then heated until no more solution is dropping into the receiving flask. This crude distillate is then further fractionally distilled to yield 2-amino-3-methylpentanoic hexanoic anhydride. Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel The round bottomed flask is placed in an ice bath After addition The flask is then heated until no more solution This crude distillate is then further fractionally distilled

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

Procedure: Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel, containing 10.81 g (60 mmol) of the prepared hexanoyl bromide, and side arm water condenser fixed with a dry receiving flask, is placed 11.03 g (72 mmol) of sodium 2-amino-3-methylpentanoate. The round bottomed flask is placed in an ice bath and the hexanoyl bromide is added drop wise. After addition is completed the mixture is shaken and the ice bath is replaced by a heating mantle. The flask is then heated until no more solution is dropping into the receiving flask. This crude distillate is then further fractionally distilled to yield 2-amino-3-methylpentanoic hexanoic anhydride. Finally, in a dry 2-necked, round bottomed flask, fixed with a separatory funnel The round bottomed flask is placed in an ice bath After addition The flask is then heated until no more solution This crude distillate is then further fractionally distilled