2-Methoxy-6-isopropylpyrazine

Chemical Properties

2-Methoxy-3(5 and 6)-isopropylpyrazine has an earthy, bell pepper, raw potato, galbanum aroma.

Occurrence

Reported found in asparagus, cabbage, peas, carrot, cucumber, lettuce, onion, potato, bell pepper, tomato, ginger, white wine, coffee, peanut, beans, beetroot, parsnip root and dill herb.

Preparation

(a) From 2-hydroxy-3-propylpyrazine by ethylation with diazomethane; the 2-hydroxy-3-propylpyrazine is pre pared by condensing norvaline amide hydrochloride with glyxoal (a + b + c). A mixture can be obtained by methoxylation of isopropylchloropyrazine.

Aroma threshold values

Detection: 0.002 to 10 ppb.