34236-58-3Relevant academic research and scientific papers
Substituent-Controlled Divergent Cascade Cycloaddition Reactions of Chalcones and Arylalkynols: Access to Spiroketals and Oxa-Bridged Fused Heterocycles
Chang, Weixing,Kong, Jingyang,Li, Jing,Liu, Lingyan,Wang, Hongkai,Zeng, Tianlong
supporting information, p. 4024 - 4032 (2021/07/12)
Herein, we report substituent-controlled divergent cascade cycloaddition reactions of chalcones and arylalkynols in the presence of PtI2. Depending on the substituent on the chalcone, either spiroketals or oxa-bridged fused heterocycles could be obtained in the ranges of 86–97% and 87–95% yields under identical reaction conditions. Control experiments were carried out to elucidate the origin of the high chemoselectivity. These provide a method for the synthesis of a diverse array of structurally complex oxygen-containing heterocycles. (Figure presented.).
Frustrated Lewis pair induced boroauration of terminal alkynes
Ye, Hongyan,Lu, Zhenpin,You, Di,Chen, Zhenxia,Li, Zhen Hua,Wang, Huadong
, p. 12047 - 12050 (2013/01/16)
Golden frustration: The facile activation of terminal alkynes with a frustrated Lewis pair (1 and 1,4-diazabicyclo[2.2.2]octane (DABCO)) enables the development of an efficient boroauration reaction. This process can be achieved directly from alkynes, a h
