1 2 3 a) X= H b) X= C1 methylhydrazine in dry DMF resulted in an 8515 mixture of 2a and 3a, whereas Leiby and Heinde15 stated that the same reaction and the ring opening of 5- chloroisatoic anhydride (lb) in 95% ethanol resulted in 2b and 3b, respectively, as the sole products. Both groups of authors described the products as oils which were used in different reactions6 When these experiments were repeated under the reported conditions, the'H ...
