1,3-Dipolar Cycloaddition Reactions of Vinylidenecyclopropane-Diesters with Aromatic Diazomethanes Generated in Situ
作者:Lei Wu、Min Shi
DOI:10.1021/jo100105k
日期:2010.4.2
1,3-Dipolarcycloaddition reactions of VDCP-diesters with aromatic diazomethanes generated in situ from the corresponding aromatic aldehydes and tosylhydrazine mediated by base produce pyrazole derivatives in good yields under mild conditions. A plausible reaction mechanism has been proposed on the basis of control experiments along with the discussion on the regioselectivity.
Cu-catalyzed C–C bond formation of vinylidene cyclopropanes with carbon nucleophiles
作者:Jichao Chen、Shang Gao、Ming Chen
DOI:10.1039/c9sc04122b
日期:——
The development of Cu-catalyzed addition of carbon nucleophiles to vinylidene cyclopropanes was reported. The reactions with 1,1-bisborylmethane provided homopropargylic boronate products by forming a C–C bond at the terminal carbon atom of the allene moiety of vinylidene cyclopropanes. Alkynyl boronates are also suitable nucleophile precursors in reactions with vinylidene cyclopropanes, and skipped
Palladium-catalyzed hydroamination of vinylidenecyclopropane-diester with pyrroles and indoles: an approach to azaaromatic vinylcyclopropanes
作者:Ze-ren Yang、Bo Zhang、Yong-jie Long、Min Shi
DOI:10.1039/d2cc03635e
日期:——
A new method for the synthesis of azaaromatic vinylcyclopropanes (VCPs) has been disclosed in this paper by using pyrrole or indole derivatives as nucleophilic reagents to react with vinylidenecyclopropane-diesters (VDCP-diesters) in the presence of a Pd catalyst, a phosphine ligand and a base under mild conditions in up to 98% yield with a reasonable substrate scope. This reaction is one of the few
Alkyne Polymers from Stable Butatriene Homologues: Controlled Radical Polymerization of Vinylidenecyclopropanes
作者:Bin Wu、Qian-Jun Ding、Zheng-Lin Wang、Rong Zhu
DOI:10.1021/jacs.2c12220
日期:2023.2.1
Controlledpolymerization of cumulenic monomers represents a promising yet underdeveloped strategy toward well-defined alkyne polymers. Here we report a stereoelectronic effect-inspired approach using simple vinylidenecyclopropanes (VDCPs) as butatriene homologues in controlledradical ring-opening polymerizations. While being thermally stable, VDCPs mimic butatrienes via conjugation of the cyclopropane