A Facile One-Pot Synthesis of 1-Substituted Tetrazole-5-thiones and 1-Substituted 5-Alkyl(aryl)sulfanyltetrazoles from Organic Isothiocyanates
作者:Sam-Yong Han、Je-Woo Lee、Hee-Jung Kim、Yong-Joo Kim、Soon-W. Lee、Young-Soo Gyoung
DOI:10.5012/bkcs.2012.33.1.55
日期:2012.1.20
Treatments of organic isothiocyanates (R-NCS) with $NaN_3$ in the presence of pyridine in water at room temperature gave corresponding various organic tetrazole-thiones, [$S=CN_4(R)$] (R = alkyl or aryl). Isolated products are obtained as white or yellow solids in good yields (76-97%). The molecular structure by X-ray diffraction study for one of products shows the proposed formation. In addition, one-pot synthesis of 1-substituted 5-alkyl(or aryl)sulfanyltetrazoles has been demonstrated. Addition of alkyl or aryl halides into the mixture of organic isothiocyanates, $NaN_3$, and pyridine in water at room temperature exclusively formed 1-substituted 5-alkyl(or aryl)sulfanyltetrazoles (S-derivatives) in high yields.
在水和吡啶的存在下,室温下用$NaN_3$处理有机异硫氰酸酯(R-NCS),得到了相应的多种有机四唑硫酮,[$S=CN_4(R)$](R = 烷基或芳基)。分离得到的产品为白色或黄色固体,产率良好(76-97%)。通过对其中一个产品的X射线衍射研究,显示了预期的分子结构。此外,还展示了1-取代的5-烷基(或芳基)硫基四唑的一锅法合成。在室温下将烷基或芳基卤化物加入有机异硫氰酸酯、$NaN_3$和吡啶的水溶液中,专门形成了高产率的1-取代的5-烷基(或芳基)硫基四唑(S型衍生物)。