置換ベンゼンスルホニル・カルバミン酸誘導体の研究-7-ピリジンの存在下におけるN-置換ベンゼンスルホニル-N-アルキルカルボジイドの2量化とその付加体
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When a N-(substituted benzenesulfonyl)-N'-alkyl carbodiimide (1) was treated with an equimolar amount of pyridine (2) in the absence of solvent, an addition compound (3) of (1) and (2) was formed. In the presence of solvent, however, a dimer (4) of (1) was obtained. Furthermore, (3) was converted quantitatively into (4) when dissolved in an organic solvent, such as chloroform. Thus, it is assumed that the carbodiimide is dimerized through an intermediary addition compound (3). (4) was then hydrolyzed into a N-(substituted benzenesulfonyl)-N', N"-dialkylguanidine, a N-substituued benzenesulf onamide, and carbon dioxide in a theoretical yield. Based on the hydrolysis products, the structures of (4) and (3) were elucidated.
- 社団法人 有機合成化学協会の論文
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