作者:Do Young Ra、Nam Sook Cho、Jung Hyun Moon、Sung Kwon Kang
DOI:10.1002/jhet.5570350636
日期:1998.11
5-Amino-2-acyl-1,2,4-thiadiazolin-3-ones 2–1 can be synthesized from 5-amino-2H-1,2,4-thiadiazolin-3-one (1–1) via a selective acylation with an acid anhydride in pyridine. The 1H nmr spectral characteristics of 5-amino-2-acyl-1,2,4-thiadiazolin-3-ones 2–1 is in particular, compared with 5-amino-2H-1,2,4-thiadiazolin-3-one (1–1) and 5-amino-2-alkyl-1,2,4-thiadiazolin-3-ones 1–2, 1–3. The 5-amino group
5-氨基-2-酰基-1,2,4-噻二唑啉-3-酮2-1可以由5-氨基-2-合成ħ -1,2,4-噻二唑啉-3-酮(1-1)经由在吡啶中用酸酐进行选择性酰化。在1个H核磁共振的5-氨基-2-酰基-1,2,4-噻二唑啉-3-酮的光谱特性2-1是尤其是与5-氨基-2-相比ħ -1,2,4- thiadiazolin- 3-one(1-1)和5-amino-2-烷基-1,2,4-噻二唑啉-3-ones 1-2,1-3。5-氨基2–1在其1 H nmr光谱中显示为两个峰,在较高温度下会合并为一个峰,而化合物1-1、1-2和1–3仅显示为一个峰。5-氨基-2-乙酰基-1,2,4-噻二唑啉-3-酮(2a-1)的C(5)-N(5)(在氨基)键的受限制旋转约为14.5 Kcal / mol 。