反应详情

In a similar manner, 3-(methylthio)-1-nitro-1-(tetrahydro-2H-1,3-thiazin-2-ylidene)-2-propanone (18) was prepared as a yellow solid, m.p.: 117.5°-119°, from methylthioacetyl chloride; 5-(methylthio)-1-nitro-1-(tetrahydro-2H-1,3-thiazin-2-ylidene)-2-pentanone (19) was prepared as a pale yellow solid, m.p.: 49°-49.5°, from 4-methylthiobutyryl chloride; 4-(methylthio)-1-nitro-1-(tetrahydro-2H-1,3-thiazin-2-ylidene)-2-butanone (20) was prepared as a yellow solid, m.p.: 42°-43° from 3-methylthiopropionyl chloride.