2026-04-13T07:26:41Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4498922024-12-20T23:09:26Zcom_2072_300912com_2072_4427col_2072_301309

00925njm 22002777a 4500 dc Armengol-Relats, Helena author Mato, Mauro author Echavarren, Antonio M. author 2020-10-20 The formal (4+3) cycloaddition of 1,3‐dienes with Rh(II) and Au(I) non‐acceptor vinyl carbenes, generated from vinylcycloheptatrienes or alkoxyenynes, respectively, leads to 1,4‐cycloheptadienes featuring complex and diverse substitution patterns, including natural dyctiopterene C′ and a hydroxylated derivative of carota‐1,4‐diene. A complete mechanistic picture is presented, in which Au(I) and Rh(II) non‐acceptor vinyl carbenes were shown to undergo a vinylcyclopropanation/Cope rearrangement or a direct (4+3) cycloaddition that takes place in a non‐concerted manner. http://hdl.handle.net/2072/449892 https://doi.org/10.1002/anie.202012092 Assembly of Complex 1,4‐Cycloheptadienes by (4+3) Cycloaddition of Rhodium(II) and Gold(I) Non‐Acceptor Carbenes