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Figure 1
Reaction scheme for the synthesis of 9-benzyl-3-methyl-7-phenyl-1,6-dioxa-3,9-diazaspiro[4,4]nonane-2,8-dione from the sarcosine derivative A. |
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Figure 1
Reaction scheme for the synthesis of 9-benzyl-3-methyl-7-phenyl-1,6-dioxa-3,9-diazaspiro[4,4]nonane-2,8-dione from the sarcosine derivative A. |