Methyl Isocyanate → HCID 135689618, compound

Participants

Reaction Steps

To a 350 milliliter glass pressure bottle equipped with a magnetic stirrer was added 6.03 grams (0.025 moles) of 4-(2-hydroxybenzylideneamino)-3,5-dimethylphenol prepared in Part A, 1.71 grams (0.030 moles) of methyl isocyanate, 50 milliliters of ethyl acetate and 5 drops of dibutyltin diacetate. The resulting reaction mixture was stirred for 65 hours at room temperature and then washed twice with a 1% aqueous sodium bicarbonate solution followed by a single wash with saturated brine solution. After drying the reaction mixture over magnesium sulfate, it was collected by filtration and concentrated under reduced pressure to give a brown oil. The oil was triturated with hexane to give 5.21 grams (0.017 moles) of 4-(2-hydroxybenzylideneamino)-3,5-dimethylphenyl methylcarbamate in the form of a yellow solid having a melting point of 116°-118° C. and the following structural formula: ##STR8##

Provenance & Evidence