Palladium(0)-Catalyzed Intermolecular Arylative Dearomatization of β-Naphthols
作者:Ren-Qi Xu、Ping Yang、Hang-Fei Tu、Shou-Guo Wang、Shu-Li You
DOI:10.1002/anie.201608724
日期:2016.11.21
The first Pd0‐catalyzed intermolecular arylative dearomatization of β‐naphthols with aryl halides is described. It was found that Q‐Phos could facilitate the palladium‐catalyzed cross‐coupling‐type dearomatization of β‐naphthols, while avoiding O‐arylation, to construct 2‐naphthalenones in excellent yields and with high chemoselectivity.
Rh-Catalyzed Aminative Dearomatization of Naphthols with Hydroxylamine-<i>O</i>
-Sulfonic Acid (HOSA)
作者:Ji-Cheng Yi、Zhi-Jie Wu、Shu-Li You
DOI:10.1002/ejoc.201900917
日期:2019.9.8
A Rh‐catalyzed aminativedearomatization of naphthols with HOSA was achieved. A series of unprotected α‐amino‐β‐naphthalenones was afforded in good yields under mild conditions.
Iridium-Catalyzed Intermolecular Asymmetric Dearomatization of β-Naphthols with Allyl Alcohols or Allyl Ethers
作者:Hang-Fei Tu、Chao Zheng、Ren-Qi Xu、Xi-Jia Liu、Shu-Li You
DOI:10.1002/anie.201609654
日期:2017.3.13
An Ir‐catalyzed intermolecular asymmetric dearomatization reaction of β‐naphthols with allyl alcohols or allyl ethers was developed. When an iridium catalyst generated from [Ir(COD)Cl]2 (COD=cyclooctadiene) and a chiral P/olefin ligand is employed, highly functionalized β‐naphthalenone compounds bearing an all‐carbon‐substitutedquaternary chiral center were obtained in up to 92 % yield and 98 % ee
The super electrophilicity of a shelf-stable, easily prepared trifluoromethylthiolating reagent N-trifluoromethylthio-dibenzenesulfonimide 7 was demonstrated. Consistent with the theoretical prediction, 7 exhibits reactivity remarkably higher than that of other known electrophilic trifluoromethylthiolating reagents. In the absence of any additive, 7 reacted with a wide range of electron-rich arenes
Direct Allylic C(sp3)-H Alkylation with 2-Naphthols via Cooperative Palladium and Copper Catalysis: Construction of Cyclohexadienones with Quaternary Carbon Centers
作者:Ming Jin、Wei Ren、Dang-Wei Qian、Shang-Dong Yang
DOI:10.1021/acs.orglett.8b02910
日期:2018.11.16
Pd(PPh3)4/Cu(MeCN)4PF6 cooperative catalysis under mild base-free conditions. Special tolerance was observed with peptides, allowing late-stage modifications of peptides. The transformation provides a general protocol to obtain functionalized cyclohexadienones with quaternary carbon centers under two alternative sets of conditions and serves as a complementary catalysis system for the dearomatization of