Palladium(0)‐Catalyzed
<i>Anti</i>
‐Selective Addition‐Cyclizations of Alkynyl Electrophiles
作者:Hirokazu Tsukamoto、Kazuya Ito、Tatsuhiko Ueno、Mitsugu Shiraishi、Yoshinori Kondo、Takayuki Doi
DOI:10.1002/chem.202203068
日期:2023.1.27
Palladium(0)/monophosphine complexes catalyze anti-selective arylative cyclizations of alkynyl electrophiles with organometallic reagents. Remarkably, the regioselectivity in the cyclization of conjugated diyne-aldehydes can be controlled by a choice of the phosphine ligand, with triphenylphosphine and tricyclohexylphosphine leading to the exclusive formation of 2-alkylidene-cyclopentanol and 2-cyclohexen-1-ol
钯 (0)/单膦配合物催化炔基亲电子试剂与有机金属试剂的反选择性芳基化环化。值得注意的是,共轭二炔醛环化的区域选择性可以通过选择膦配体来控制,三苯基膦和三环己基膦分别导致 2-亚烷基-环戊醇和 2-环己烯-1-醇衍生物的排他性形成。