1309565-85-2Relevant academic research and scientific papers
Cu(I)-Catalyzed Coupling and Cycloisomerization of Diazo Compounds with Terminal Yne-Alkylidenecyclopropanes: Synthesis of Functionalized Cyclopenta[ b]naphthalene Derivatives
Li, Peng-Hua,Yu, Liu-Zhu,Zhang, Xiao-Yu,Shi, Min
, p. 4516 - 4520 (2018)
A Cu(I)-catalyzed coupling and cycloisomerization of diazo compounds with terminal yne-alkylidenecyclopropanes (ACPs) has been presented. This reaction starts from the formation of an allenic intermediate in the Cu(I)-catalyzed cross-coupling reaction of a diazo compound with terminal alkyne in yne-tethered ACP and then undergoes a domino cycloisomerization of a 6π-electrocyclization and cyclopropane ring-opening rearrangement to give functionalized cyclopenta[b]naphthalene derivatives in moderate to excellent yields under mild conditions.
Rhodium(II)-catalyzed intramolecular cycloisomerizations of methylenecyclopropanes with N-Sulfonyl 1,2,3-Triazoles
Chen, Kai,Zhu, Zi-Zhong,Zhang, Yong-Sheng,Tang, Xiang-Ying,Shi, Min
supporting information, p. 6645 - 6649 (2014/07/08)
A novel rhodium(II)-catalyzed tandem cycloisomerization of methylenecyclopropanes (MCPs) with N-sulfonyl 1,2,3-triazoles is disclosed. The reaction produces a series of highly functionalized polycyclic Nheterocycles via a rhodium imino carbene intermediate. A distinct feature of this divergent synthesis is that different types of substrates control the reaction pathways. Moreover, several interesting transformations of these products to construct diazabicyclo[3.2.1]octane derivatives are also reported. The azavinyl rhodium carbenes derived from N-sulfonyltriazole methylenecyclopropanes were found to be very reactive in the divergent synthesis of N-containing heterocycles. Different types of cycloisomerizations were observed depending on the substrates. Derivatization of the products easily gave a series of diazabicyclo[3.2.1]octane derivatives. Bs=bromobenzenesulfonyl, Ms=methanesulfonyl, Piv=pivalate, Ts=4-toluenesulfonyl.
An efficient approach to fused indolines via a copper(I)-catalyzed reaction of sulfonyl azide with 2-ethynylaryl methylenecyclopropane
Li, Shaoyu,Luo, Yong,Wu, Jie
supporting information; experimental part, p. 3190 - 3193 (2011/08/06)
A cascade reaction of 2-ethynylaryl methylenecyclopropane with sulfonyl azide catalyzed by copper(I) iodide under mild conditions is described, which provides a novel and efficient route for the generation of fused indolines.
