1,1-Dimethylhydrazine → HCID 54468337, compound

Participants

Reaction Steps

6.4 g of 2-methoxyacrolein are stirred for 1 hour at 30°-35° C. with 4.4 g of N,N-dimethylhydrazine in 50 ml of ether, dried at 20° C. with Na2SO4 and then the solvent is removed. Distillation at 74°-76° C./13 mbar gives 6.2 g of pure 2-methoxy-4-dimethylamino-4-azabutadiene. (b) 10.8 g of 2-methoxy-4-dimethylamino-4-azabutadiene and 15 g of 2-tert.-butylisothiazolin-3-one-1,1-dioxide are stirred for 11/2 h at 80°-85° C. in 250 ml of toluene. The crude bicyclic compound of formula IVb is further processed in the crude state as described in Example 4. ##STR16## The compounds listed in Table 1 are obtained in an analogous manner.

Provenance & Evidence