Copper‐Catalyzed Coupling Reaction of Secondary Alkyl 2‐Pyridinesulfonates with Alkyl Lithium‐Based Reagents
作者:Yuta Sato、Akito Osada、Narihito Ogawa、Yuichi Kobayashi
DOI:10.1002/ejoc.202300403
日期:2023.7.21
The Cu(OTf)2-catalyzed alkyl-alkyl coupling reaction of secondary alkyl sulfonates with RLi-based reagents prepared by transmetalation with soluble MgBr2 ⋅ THF3 in THF proceeded with inversion of the configuration. RLi examined were nBuLi, sBuLi, and Ph(CH2)4Li. In contrast, soluble MgCl2 ⋅ THF2 in THF was suited for MeLi. (S)-14-Methyloctadecan-2-one, a sex pheromone produced by lichen moths, was
Cu(OTf) 2催化的仲烷基磺酸盐与RLi基试剂的烷基-烷基偶联反应是通过在THF中用可溶性MgBr 2 · THF 3进行金属转移而制备的,并进行构型反转。检验的RLi是n BuLi、s BuLi和Ph(CH 2 ) 4 Li。相反,THF 中的可溶性 MgCl 2 ⋅ THF 2适用于 MeLi。合成了地衣蛾产生的性信息素( S )-14-甲基十八烷-2-酮。