Abstract One-pot reactions of dimethyl sulfonyldiacetate and N-methyl-2 r, 6 c-di (methoxycarbonyl)-3 t, 5 t-diphenyltetrahydro-1, 4-thiazine 1, 1-dioxide with formaldehyde and primary amines lead to derivatives of 9-thia-3, 7-diazabicyclo [3.3. 1] nonane 9, 9- dioxide resulted from decarboxylation of the ester groups at the positions 1 and 5. The effects of the reaction conditions and structure of the starting reagents on the yields of 9- ...
![3,7-dimethyl-9λ6-thia-3,7-diazabicyclo[3.3.1]nonane 9,9-dioxide Structure](https://image.chemsrc.com/caspic/161/879213-93-1.png)
