Water → HCID 21387234, compound

Participants

Reaction Steps

To a stirrred solution of 8.6 grams (0.105 moles) of potassium cyanate in 75 ml of 70% aqueous acetone in a 125 ml erlenmeyer flask was added 19 grams (0.093 moles) of 2-sec.-butylazo-2-chloro-4-methylpentane (from Example 3-23) over 10 minutes while holding the reaction temperature at 15°-20° C. with a cold water bath. After the addition was complete the reaction was stirred an additional hour at room temperature, poured into 200 ml water and the product extracted with 100 mls of pentane. The pentane solution was separated, washed with 50 ml portions of water and saturated sodium bicarbonate solution, dried over anhydrous sodium sulfate, filtered and the pentane evaporated under reduced pressure on a rotating evaporator. The product was a yellow liquid and weighed 13.1 grams (67% crude yield). The infrared spectrum of the product was in agreement with the structure of 2-sec.-butylazo-2-isocyanato-4-methylpentane (strong broad isocyanate band at 2125-2225 cm- 1).

Provenance & Evidence