magnesium;diphenoxide

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

Procedure: 0.637 g of 2,6-di-tert-butyl-4-methylphenol (from Aldrich) and 2.9 ml of a 1.0 molar solution of dibutylmagnesium (DBM) in heptane (from Aldrich) were combined at 25° C. and stirred for 10 hours in 26 ml of cyclohexane before use. were combined at 25° C.

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

Procedure: reacting magnesium bis-phenoxide with formaldehyde or a formaldehyde-liberating compound under substantially anhydrous conditions to form the magnesium salt of salicylaldehyde, said magnesium bis-phenoxide having been obtained by reacting phenol with a magnesium alkoxide of formula 4;

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

Procedure: reacting magnesium bis-phenoxide with formaldehyde or a formaldehyde-liberating compound under substantially anhydrous conditions to form the magnesium salt of salicylaldehyde, said magnesium bis-phenoxide having been obtained by reacting phenol with a magnesium alkoxide of formula 4;

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 282 g of phenol and 86 g of magnesium methylate prepared from metallic magnesium and methanol was heated at 70° C. to make a solution, to which 300 ml of n-heptane was added. The mixture was refluxed at 98° C. for 24 hours, then cooled, and evaporated in a rotary evaporator to remove heptane, phenol and methanol, thereby giving 170 g of magnesium phenolate. The mixture was refluxed at 98° C. for 24 hours cooled evaporated in a rotary evaporator to remove heptane, phenol and methanol

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

Procedure: A mixture of 48.5 g of this magnesium methylate and 105 g of phenol was suspended in 150 ml of n-heptane. The suspension was heated to reflux n-heptane at 98° C. for 10 hours, then cooled, and evaporated in a rotary evaporator to remove n-heptane and methanol, thereby giving 110 g of magnesium phenolate. The suspension was heated cooled evaporated in a rotary evaporator to remove n-heptane and methanol

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

Procedure: A powder of commercial magnesium oxide (80 g) calcined at 550° C. and 282 g of phenol were charged in a ball mill and mixed at 150° C. for 16 hours. Phenol was thoroughly removed by vacuum evaporation to give magnesium phenolate-containing magnesium oxide of particle sizes 10-16 mesh. calcined at 550° C. mixed at 150° C. for 16 hours Phenol was thoroughly removed by vacuum evaporation