Synthesis and Cytotoxic Activity of Hexahydro‐1,3,5‐triazine Derivatives through Ring Condensation
作者:Song Mi Bae、Sung Young Kang、Ju Hyun Song
DOI:10.1002/bkcs.12266
日期:2021.6
pharmacologically interacting sym-triazine derivatives with hexahydrotriazine ring, novel hexahydrotriazine derivatives (1−13) were successfully synthesized. The synthesis of hexahydrotriazines was carried out from the assembly of three molecules of various amines and three molecules of formaldehyde by “1 + 1 + 1 + 1 + 1 + 1” cycloaddition. The synthesis mechanism is probably passes through imines
Inverse-electron-demand [4+2] cycloaddition of photogenerated aza-<i>ortho</i>-quinone methides with 1,3,5-triazinanes: access to perfluoroalkylated tetrahydroquinazolines
Multicomponent assembling of imidazole N -oxides, aldehydes and CH-acids: A simple and efficient approach to newly functionalized imidazole derivatives
作者:Vitaly S. Mityanov、Anton V. Kutasevich、Michail M. Krayushkin、Boris V. Lichitsky、Arkady A. Dudinov、Andrey N. Komogortsev、Tatyana Yu. Koldaeva、Valery P. Perevalov
DOI:10.1016/j.tet.2017.10.026
日期:2017.11
An efficient and simple method for C2-functionalization of 2-unsubstituted imidazole N-oxides has been developed. It consists at the condensation of 2-unsubstituted imidazole N-oxides with aldehydes and CH-acids. This method permits broad variations in the structure of starting materials.
Lewis Acid-Catalyzed Synthesis of Polysubstituted Furans from Conjugated Ene-yne-ketones and 1,3,5-Triazinanes
作者:Qiuxia Jiang、Anquan Li、Xiang Liu、Yue Yu、Baofu Zhu、Hua Cao
DOI:10.1021/acs.joc.2c00182
日期:2022.6.3
An efficient and metal-free approach to the construction of diverse functionalized furan derivatives has been developed from ene-yne-ketones and 1,3,5-triazinanes. As an atom-economical and environment-friendly protocol, the new conditions are suitable for selective C–N and C–O bond formation of a wide range of polysubstituted furans in one pot.
Access to Chiral Tetrahydroquinazolines/1,3-Benzoxazines via Iridium-Catalyzed Asymmetric [4 + 2] Cycloaddition
作者:Shengbiao Tang、Zhangru Cheng、Peng Zhang、Ying Shao、Jiangtao Sun
DOI:10.1021/acs.orglett.3c01004
日期:2023.5.26
An iridium-catalyzed asymmetric [4 + 2] cycloaddition of 1,3,5-triazinanes with 2-(1-hydroxyallyl)anilines/2-(1-hydroxyallyl)phenols has been developed, providing a straightforward and efficient approach to a wide range of tetrahydroquinazolines in good yields and excellent enantioselectivities (up to >99% ee). Typically, chiral 1,3-benzoxazines, which are challenging substrates in asymmetric [4 +