作者:Yulei Wang、Zhipeng Lin、João C. A. Oliveira、Lutz Ackermann
DOI:10.1021/acs.joc.1c00682
日期:2021.11.19
The oxidative intermolecular nitrogenation of C(sp3)–H bonds represents one of the most straightforward strategies to construct nitrogen-containing molecules. However, a sacrificial chemical oxidant is generally required. Herein, we describe electrochemical oxidative intermolecular allylic C(sp3)–Haminations in an undivided cell by electric current. The cross-dehydrogenative amination proceeded efficiently
C(sp 3 )-H 键的氧化分子间氮化代表了构建含氮分子的最直接的策略之一。然而,通常需要牺牲化学氧化剂。在此,我们通过电流描述了未分割电池中的电化学氧化分子间烯丙基 C(sp 3 )-H 胺化。在无金属和无化学氧化剂的反应条件下,交叉脱氢胺化反应在大范围内有效进行,得到分子 H 2作为唯一的副产物。
1,1,1,3,3,3-Hexafluoro-2-propanol (HFIP)-Assisted Catalyst-Free Sulfonation of Allylic Alcohols with Sulfinyl Amides
作者:Zhen Luo、Zheng-Qiang Liu、Ting-Ting Yang、Xin Zhuang、Chuan-Ming Hong、Fei-Fei Zou、Zhi-Yong Xue、Qing-Hua Li、Tang-Lin Liu
DOI:10.1021/acs.orglett.1c04206
日期:2022.1.21
A highly regioselective and catalyst-free sulfonation of allylic alcohols with sulfinyl amides has been realized. Such a mix-and-go procedure provides a convenient approach to synthetically various allylic sulfones under mild reaction conditions. Furthermore, this novel reaction shows ample substrate scope and outstanding functional group tolerance and could also be scaled-up. Meanwhile, it is the
New amphiphilicresin-supported triarylphosphines PEP (1) were designed and prepared on polyethylene glycol-polystyrene graft copolymer (PEG-PS). Palladiumcomplexes of 1, Pd(PEP)2 (4) and Pd(PEP) (5), catalyzed allylicalkylation of 3-acetoxy-1,3-diphenyl-1-propene (6) and cinnamyl acetate (7) with various nucleophiles including 1,3-dicarbonyl compounds, amino acids, sodium azide, and sodium sulfinate
alkylation of sulfinicacids with sulfonamides has been developed via sp3 C−N bond cleavage at room temperature. In the absence of external catalysts and additives, a wide variety of N-benzylic and N-allylic sulfonamides couple with sulfinicacids to give structurally diversified sulfones in moderate to excellent yields. Furthermore, the reaction of N-(2-acyl)allylic sulfonamides with sulfinicacids provides
sulfinate salt, allylic sulfones were synthesized by palladium‐catalyzed cross‐coupling of aryl iodide with N‐tosylhydrazone. In this transformation, not only the diazo compound but also the sulfinate salt, which were both generated in situ from base‐mediated decomposition of the N‐tosylhydrazone, was used as nucleophilic partner.