60857-45-6Relevant articles and documents
A high-yielding protocol for the synthesis of 4,5-diarylpyrimidin-2-amine derivatives from chalcones
Kooramatom Unni, Krishnaraj,Menon, Prasanth K.,George, Scholly Clair,Thomas, Sajesh P.,Devaky
, p. 112 - 118 (2021/10/07)
A novel, high yielding and versatile protocol was achieved for the synthesis of 4,5-diaryl-2-pyrimidinamine derivatives from chalcones. The synthesis was accomplished by converting the chalcones into 3-chloro-2,3-diaryl-2-propen-1-ones followed by subsequent reaction with amidine derivatives.
Asymmetric epoxidation of α,β-unsaturated ketones via an amine-thiourea dual activation catalysis
Zhang, Lu-Wen,Wang, Li,Ji, Nan,Dai, Si-Yang,He, Wei
supporting information, (2021/03/15)
A simple asymmetric epoxidation method is developed to effectively synthesize chiral α-carbonyl epoxides through an amine-thiourea dual activation catalysis. In this method, TBHP, as an oxidant, determined the reaction rate, and the chiral amine-thiourea catalyst effectively controlled the stereoselectivity of the reaction, and KOH promoted deprotonation. 22 examples of α,β-unsaturated ketones with various substituent groups are smoothly converted into α-carbonyl epoxides with moderate to excellent enantiomeric excess.
Preparation of mesoporous zeolite ETS-10 catalysts for high-yield synthesis of α,β-epoxy ketones
Xiang, Mei,Ni, Xiaojun,Yi, Xianfeng,Zheng, Anmin,Wang, Wenchang,He, Mingyang,Xiong, Jing,Liu, Taotao,Ma, Yuli,Zhu, Pengyuan,Zheng, Xiang,Tang, Tiandi
, p. 521 - 525 (2015/03/04)
Developing highly active heterogeneous catalysts for the efficient construction of valuable building blocks is of great importance to synthetic chemistry. For this purpose, a mesoporous zeolite ETS-10 (METS-10) is synthesized by using a mesoscale silane surfactant as a template and applied to achieve highly efficient syntheses of α,β-epoxy ketones by employing simple alkenes and aldehydes as starting materials. The high activity of the METS-10 catalyst is attributed to its unique porous structure and basicity. Electron paramagnetic resonance characterization results and theoretical calculation experimental data reveal that the strong basic sites on METS-10 catalyst can activate the reaction substrate and intermediate. In addition, the mesopores in METS-10 catalyst benefit the mass transfer and further improve the catalytic activity. Mesoporous zeolite ETS-10 is synthesized by using mesoscale silane surfactant as a template and applied to the highly efficient synthesis of α,β-epoxy ketones by employing simple alkenes and aldehydes as starting materials. The high activity of the mesoporous ETS-10 catalyst is attributed to its unique porous structure and basicity.