3-氯-4-环己基苯甲醛

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-Chloro-4-cyclohexylbenzaldehyde (0.1 mole), malonic acid (0.2 moles), and dry pyridine (175 ml) are placed in a 1 l round-bottom flask. The malonic acid is dissolved by shaking on a steam bath and piperidine (0.5 ml) is added. The reaction is allowed to take place on the steam bath for 4 hours. After standing at room temperature ovenight, the mixture is refluxed for 1 hour and cooled. The reaction mixture is poured into 250 ml of ice water and acidified with concentrated hydrochloric acid (80 ml) with stirring. The crystals of product are collected by filtration, washed with water (4×150 ml) and air dreid. Recrystallization from acetone-water gives 3-chloro-4-cyclohexylcinnamic acid. for 4 hours After standing at room temperature the mixture is refluxed for 1 hour cooled with stirring The crystals of product are collected by filtration washed with water (4×150 ml) and air dreid Recrystallization from acetone-water

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 115 g. of 1-(3-chloro-4-cyclohexylphenyl)-1,2-ethanediol in tetrahydrofuran (800 ml.) is added a solution of periodic acid (102 g.) in ether (750 ml.). The reaction mixture is stirred under nitrogen overnight. The reaction mixture is filtered and the filtrate is washed with water (3×200 ml) and placed over sodium sulfate. Removal of solvent gives a liquid residue which is then distilled to give 3-chloro-4-cyclohexylbenzaldehyde. The reaction mixture is filtered the filtrate is washed with water (3×200 ml) Removal of solvent gives a liquid residue which is then distilled

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-Chloro-4-cyclohexylbenzaldehyde (0.1 mole), malonic acid (0.2 moles), and dry pyridine (175 ml) are placed in a 1 l round-bottom flask. The malonic acid is dissolved by shaking on a steam bath and piperidine (0.5 ml) is added. The reaction is allowed to take place on the steam bath for 4 hours. After standing at room temperature overnight, the mixture is refluxed for 1 hour and cooled. The reaction mixture is poured into 250 ml of ice water and acidified with concentrated hydrochloric acid (80 ml) with stirring. The crystals of product are collected by filtration, washed with water (4×150 ml) and air dreid. Recrystallization from acetone-water gives 3-chloro-4-cyclohexylcinnamic acid. for 4 hours the mixture is refluxed for 1 hour cooled with stirring The crystals of product are collected by filtration washed with water (4×150 ml) and air dreid Recrystallization from acetone-water

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-Chloro-4-cyclohexylbenzaldehyde (0.1 mole), malonic acid (0.2 moles), and dry pyridine (175 ml) are placed in a 1 l round-bottom flask. The malonic acid is dissolved by shaking on a steam bath and piperidine (0.5 ml) is added. The reaction is allowed to take place on the steam bath for 4 hours. After standing at room temperature overnight, the mixture is refluxed for 1 hour and cooled. The reaction mixture is poured into 250 ml of ice water and acidified with concentrated hydrochloric acid (80 ml) with stirring. The crystals of product are collected by filtration, washed with water (4×150 ml) and air dreid. Recrystallization from acetone-water gives 3-chloro-4-cyclohexylcinnamic acid. for 4 hours the mixture is refluxed for 1 hour cooled with stirring The crystals of product are collected by filtration washed with water (4×150 ml) and air dreid Recrystallization from acetone-water

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 115 g. of 1-(3-chloro-4-cyclohexylphenyl)-1,2-ethanediol in tetrahydrofuran (800 ml.) is added a solution of periodic acid (102 g.) in ether (750 ml.). The reaction mixture is stirred under nitrogen overnight. The reaction mixture is filtered and the filtrate is washed with water (3×200 ml) and placed over sodium sulfate. Removal of solvent gives a liquid residue which is then distilled to give 3-chloro-4-cyclohexylbenzaldehyde. The reaction mixture is filtered the filtrate is washed with water (3×200 ml) Removal of solvent gives a liquid residue which is then distilled

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 115 g. of 1-(3-chloro-4-cyclohexylphenyl)-1,2-ethanediol in tetrahydrofuran (800 ml.) is added a solution of periodic acid (102 g.) in ether (750 ml.). The reaction mixture is stirred under nitrogen overnight. The reaction mixture is filtered and the filtrate is washed with water (3×200 ml) and placed over sodium sulfate. Removal of solvent gives a liquid residue which is then distilled to give 3-chloro-4-cyclohexylbenzaldehyde. The reaction mixture is filtered the filtrate is washed with water (3×200 ml) Removal of solvent gives a liquid residue which is then distilled

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-Chloro-4-cyclohexylbenzaldehyde (0.1 mole), malonic acid (0.2 moles), and dry pyridine (175 ml) are placed in a 1 l round-bottom flask. The malonic acid is dissolved by shaking on a steam bath and piperidine (0.5 ml) is added. The reaction is allowed to take place on the steam bath for 4 hours. After standing at room temperature overnight, the mixture is refluxed for 1 hour and cooled. The reaction mixture is poured into 250 ml of ice water and acidified with concentrated hydrochloric acid (80 ml) with stirring. The crystals of product are collected by filtration, washed with water (4×150 ml) and air dreid. Recrystallization from acetone-water gives 3-chloro-4-cyclohexylcinnamic acid. for 4 hours the mixture is refluxed for 1 hour cooled with stirring The crystals of product are collected by filtration washed with water (4×150 ml) and air dreid Recrystallization from acetone-water

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 115 g. of 1-(3-chloro-4-cyclohexylphenyl)-1,2-ethanediol in tetrahydrofuran (800 ml.) is added a solution of periodic acid (102 g.) in ether (750 ml.). The reaction mixture is stirred under nitrogen overnight. The reaction mixture is filtered and the filtrate is washed with water (3×200 ml) and placed over sodium sulfate. Removal of solvent gives a liquid residue which is then distilled to give 3-chloro-4-cyclohexylbenzaldehyde. The reaction mixture is filtered the filtrate is washed with water (3×200 ml) Removal of solvent gives a liquid residue which is then distilled

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-Chloro-4-cyclohexylbenzaldehyde (0.1 mole), malonic acid (0.2 moles), and dry pyridine (175 ml) are placed in a 1 l round-bottom flask. The malonic acid is dissolved by shaking on a steam bath and piperidine (0.5 ml) is added. The reaction is allowed to take place on the steam bath for 4 hours. After standing at room temperature overnight, the mixture is refluxed for 1 hour and cooled. The reaction mixture is poured into 250 ml of ice water and acidified with concentrated hydrochloric acid (80 ml) with stirring. The crystals of product are collected by filtration, washed with water (4 × 150 ml) and air dried. Recrystallization from acetone-water gives 3-chloro-4-cyclohexylcinnamic acid. for 4 hours the mixture is refluxed for 1 hour cooled with stirring The crystals of product are collected by filtration washed with water (4 × 150 ml) and air dried Recrystallization from acetone-water

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To 115 g. of 1-(3-chloro-4-cyclohexylphenyl)-1,2-ethanediol in tetrahydrofuran (800 ml.) is added a solution of periodic acid (102 g.) in ether (750 ml.). The reaction mixture is stirred under nitrogen overnight. The reaction mixture is filtered and the filtrate is washed with water (3×200 ml) and placed over sodium sulfate. Removal of solvent gives a liquid residue which is then distilled to give 3-chloro-4-cyclohexylbenzaldehyde. The reaction mixture is filtered the filtrate is washed with water (3×200 ml) Removal of solvent gives a liquid residue which is then distilled

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-Chloro-4-cyclohexylbenzaldehyde (0.1 mole), malonic acid (0.2 moles), and dry pyridine (175 ml) are placed in a 1 l round-bottom flask. The malonic acid is dissolved by shaking on a steam bath and piperidine (0.5 ml) is added. The reaction is allowed to take place on the steam bath for 4 hours. After standing at room temperature overnight, the mixture is refluxed for 1 hour and cooled. The reaction mixture is poured into 250 ml of ice water and acidified with concentrated hydrochloric acid (80 ml) with stirring. The crystals of product are collected by filtration, washed with water (4×150 ml) and air dried. Recrystallization from acetone-water gives 3-chloro-4-cyclohexylcinnamic acid. for 4 hours the mixture is refluxed for 1 hour cooled with stirring The crystals of product are collected by filtration washed with water (4×150 ml) and air dried Recrystallization from acetone-water