NCZ\ tars a These products are identical with samples obtained by oxidation of l-nitro-4- methoxy-6-methyl-1, 3-cyclohexadiene and l-nitro-2-methoxy-4-n-butyl-3, 4-dihydronaphth~ ene with DDQ. quent oxidation to nitro derivatives, can lead to unsatisfactory results. For instance, 6-nitroso-7-methylbenzothiazole can be prepared from the 6-nitro derivative in very good yields (> 804b). However, it did not react with KMn04 in acetone--water, H202 ...