1-(4-ethylphenyl)-2-methylpropan-2-ol

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

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

Procedure: 6.2 mL of concentrated sulfuric acid is added dropwise to 15.5 g (87 mmol) of 1-(4-ethylphenyl)-2-methylpropan-2-ol in 4.8 mL (91 mmol) acetonitrile and 15 mL glacial acetic acid within 15 minutes, during which time the temperature rises to 65° C. It is then stirred for one hour, diluted with ice water, and made alkaline with concentrated sodium hydroxide solution. After another 30 minutes' stirring, the solid precipitated is suction filtered and washed with water. The crude product is dissolved in ethyl acetate, dried with sodium sulfate, and evaporated down. The oil remaining is combined with petroleum ether, whereupon a solid is precipitated which is filtered off and dried. Yield: 16.3 g (85%); melting point 90° C.-92° C. rises to 65° C After another 30 minutes' stirring the solid precipitated filtered washed with water The crude product is dissolved in ethyl acetate dried with sodium sulfate evaporated down is precipitated which is filtered off dried

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

Procedure: 6.2 mL of concentrated sulfuric acid is added dropwise to 15.5 g (87 mmol) of 1-(4-ethylphenyl)-2-methylpropan-2-ol in 4.8 mL (91 mmol) acetonitrile and 15 mL glacial acetic acid within 15 minutes, during which time the temperature rises to 65° C. It is then stirred for one hour, diluted with ice water, and made alkaline with concentrated sodium hydroxide solution. After another 30 minutes' stirring, the solid precipitated is suction filtered and washed with water. The crude product is dissolved in ethyl acetate, dried with sodium sulfate, and evaporated down. The oil remaining is combined with petroleum ether, whereupon a solid is precipitated which is filtered off and dried. Yield: 16.3 g (85%); melting point 90° C.-92° C. rises to 65° C After another 30 minutes' stirring the solid precipitated filtered washed with water The crude product is dissolved in ethyl acetate dried with sodium sulfate evaporated down is precipitated which is filtered off dried

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

Procedure: 14.8 g (90 mmol) of 1-(4-ethylphenyl)propan-2-one dissolved in diethyl ether is added dropwise to 39 mL of a 3 molar solution of methylmagnesium bromide in diethyl ether while being cooled with an ice bath in such a way that the temperature does not exceed 30° C. After the addition has ended, the reaction mixture is refluxed for 1.5 hours and then hydrolyzed with 10% ammonium chloride solution. After the removal of the organic phase, the aqueous phase is extracted with diethyl ether. The combined ether phases are washed with water, dried with sodium sulfate, and evaporated down. The oil thus obtained is further reacted directly. Yield: 15.5 g (90%). while being cooled with an ice bath in such a way that the temperature does not exceed 30° C After the addition the reaction mixture is refluxed for 1.5 hours After the removal of the organic phase the aqueous phase is extracted with diethyl ether The combined ether phases are washed with water dried with sodium sulfate evaporated down The oil thus obtained is further reacted directly

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

Procedure: 6.2 mL of concentrated sulfuric acid is added dropwise to 15.5 g (87 mmol) of 1-(4-ethylphenyl)-2-methylpropan-2-ol in 4.8 mL (91 mmol) acetonitrile and 15 mL glacial acetic acid within 15 minutes, during which time the temperature rises to 65° C. It is then stirred for one hour, diluted with ice water, and made alkaline with concentrated sodium hydroxide solution. After another 30 minutes' stirring, the solid precipitated is suction filtered and washed with water. The crude product is dissolved in ethyl acetate, dried with sodium sulfate, and evaporated down. The oil remaining is combined with petroleum ether, whereupon a solid is precipitated which is filtered off and dried. Yield: 16.3 g (85%); melting point 90° C.-92° C. rises to 65° C After another 30 minutes' stirring the solid precipitated filtered washed with water The crude product is dissolved in ethyl acetate dried with sodium sulfate evaporated down is precipitated which is filtered off dried

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

Procedure: 14.8 g (90 mmol) of 1-(4-ethylphenyl)propan-2-one dissolved in diethyl ether is added dropwise to 39 mL of a 3 molar solution of methylmagnesium bromide in diethyl ether while being cooled with an ice bath in such a way that the temperature does not exceed 30° C. After the addition has ended, the reaction mixture is refluxed for 1.5 hours and then hydrolyzed with 10% ammonium chloride solution. After the removal of the organic phase, the aqueous phase is extracted with diethyl ether. The combined ether phases are washed with water, dried with sodium sulfate, and evaporated down. The oil thus obtained is further reacted directly. Yield: 15.5 g (90%). while being cooled with an ice bath in such a way that the temperature does not exceed 30° C After the addition the reaction mixture is refluxed for 1.5 hours After the removal of the organic phase the aqueous phase is extracted with diethyl ether The combined ether phases are washed with water dried with sodium sulfate evaporated down The oil thus obtained is further reacted directly

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

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

Procedure: 6.2 mL of concentrated sulfuric acid is added dropwise to 15.5 g (87 mmol) of 1-(4-ethylphenyl)-2-methylpropan-2-ol in 4.8 mL (91 mmol) acetonitrile and 15 mL glacial acetic acid within 15 minutes, during which time the temperature rises to 65° C. It is then stirred for one hour, diluted with ice water, and made alkaline with concentrated sodium hydroxide solution. After another 30 minutes' stirring, the solid precipitated is suction filtered and washed with water. The crude product is dissolved in ethyl acetate, dried with sodium sulfate, and evaporated down. The oil remaining is combined with petroleum ether, whereupon a solid is precipitated which is filtered off and dried. Yield: 16.3 g (85%); melting point 90° C.-92° C. rises to 65° C After another 30 minutes' stirring the solid precipitated filtered washed with water The crude product is dissolved in ethyl acetate dried with sodium sulfate evaporated down is precipitated which is filtered off dried

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

Procedure: 14.8 g (90 mmol) of 1-(4-ethylphenyl)propan-2-one dissolved in diethyl ether is added dropwise to 39 mL of a 3 molar solution of methylmagnesium bromide in diethyl ether while being cooled with an ice bath in such a way that the temperature does not exceed 30° C. After the addition has ended, the reaction mixture is refluxed for 1.5 hours and then hydrolyzed with 10% ammonium chloride solution. After the removal of the organic phase, the aqueous phase is extracted with diethyl ether. The combined ether phases are washed with water, dried with sodium sulfate, and evaporated down. The oil thus obtained is further reacted directly. Yield: 15.5 g (90%). while being cooled with an ice bath in such a way that the temperature does not exceed 30° C After the addition the reaction mixture is refluxed for 1.5 hours After the removal of the organic phase the aqueous phase is extracted with diethyl ether The combined ether phases are washed with water dried with sodium sulfate evaporated down The oil thus obtained is further reacted directly

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

Procedure: 6.2 mL of concentrated sulfuric acid is added dropwise to 15.5 g (87 mmol) of 1-(4-ethylphenyl)-2-methylpropan-2-ol in 4.8 mL (91 mmol) acetonitrile and 15 mL glacial acetic acid within 15 minutes, during which time the temperature rises to 65° C. It is then stirred for one hour, diluted with ice water, and made alkaline with concentrated sodium hydroxide solution. After another 30 minutes' stirring, the solid precipitated is suction filtered and washed with water. The crude product is dissolved in ethyl acetate, dried with sodium sulfate, and evaporated down. The oil remaining is combined with petroleum ether, whereupon a solid is precipitated which is filtered off and dried. Yield: 16.3 g (85%); melting point 90° C.–92° C. rises to 65° C After another 30 minutes' stirring the solid precipitated filtered washed with water The crude product is dissolved in ethyl acetate dried with sodium sulfate evaporated down is precipitated which is filtered off dried

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

Procedure: 14.8 g (90 mmol) of 1-(4-ethylphenyl)propan-2-one dissolved in diethyl ether is added dropwise to 39 mL of a 3 molar solution of methylmagnesium bromide in diethyl ether while being cooled with an ice bath in such a way that the temperature does not exceed 30° C. After the addition has ended, the reaction mixture is refluxed for 1.5 hours and then hydrolyzed with 10% ammonium chloride solution. After the removal of the organic phase, the aqueous phase is extracted with diethyl ether. The combined ether phases are washed with water, dried with sodium sulfate, and evaporated down. The oil thus obtained is further reacted directly. Yield: 15.5 g (90%). while being cooled with an ice bath in such a way that the temperature does not exceed 30° C After the addition the reaction mixture is refluxed for 1.5 hours After the removal of the organic phase the aqueous phase is extracted with diethyl ether The combined ether phases are washed with water dried with sodium sulfate evaporated down The oil thus obtained is further reacted directly

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

Procedure: 6.2 mL of concentrated sulfuric acid is added dropwise to 15.5 g (87 mmol) of 1-(4-ethylphenyl)-2-methylpropan-2-ol in 4.8 mL (91 mmol) acetonitrile and 15 mL glacial acetic acid within 15 minutes, during which time the temperature rises to 65° C. It is then stirred for one hour, diluted with ice water, and made alkaline with concentrated sodium hydroxide solution. After another 30 minutes' stirring, the solid precipitated is suction filtered and washed with water. The crude product is dissolved in ethyl acetate, dried with sodium sulfate, and evaporated down. The oil remaining is combined with petroleum ether, whereupon a solid is precipitated which is filtered off and dried. Yield: 16.3 g (85%); melting point 90° C.-92° C. rises to 65° C After another 30 minutes' stirring the solid precipitated filtered washed with water The crude product is dissolved in ethyl acetate dried with sodium sulfate evaporated down is precipitated which is filtered off dried