Highly chemoselective synthesis of aryl allylic sulfoxides through calcium hypobromite oxidation of aryl allylic sulfides
作者:Vittorio Pace、Laura Castoldi、Wolfgang Holzer
DOI:10.1016/j.tetlet.2011.12.046
日期:2012.2
A highlychemoselectiveoxidation of widely substituted aryl allylic sulfides, prepared by allylation of arylthioethers with KF-Celite, to the corresponding aryl allylic sulfoxide was achieved by employing calcium hypobromite. Neither over-oxidation to sulfones nor halogenation of the aromatic rings was observed. The protocol may be successfully applied for the oxidation of substituted allylic systems
Aryne 1,2,3-Trifunctionalization with Aryl Allyl Sulfoxides
作者:Yuanyuan Li、Dachuan Qiu、Rongrong Gu、Junli Wang、Jiarong Shi、Yang Li
DOI:10.1021/jacs.6b06981
日期:2016.8.31
An aryne 1,2,3-trisubstitution with aryl allyl sulfoxides is accomplished, featuring an incorporation of C-S, C-O, and C-C bonds on the consecutive positions of a benzene ring. The reaction condition is mild with broad substrate scope. Preliminary mechanistic study suggests a cascade formal [2 + 2] reaction of aryne with S═O bond, an allyl S → O migration, and a Claisen rearrangement.
芳烃 1,2,3-三取代与芳基烯丙基亚砜完成,其特点是在苯环的连续位置上引入 CS、CO 和 CC 键。反应条件温和,底物范围广。初步机理研究表明,芳炔与 S=O 键发生级联形式的 [2 + 2] 反应、烯丙基 S → O 迁移和克莱森重排。
Intermediates to prepare pyridazinone herbicides, and a process to prepare them
申请人:FMC Corporation
公开号:US10913719B2
公开(公告)日:2021-02-09
Disclosed is a process for preparing a compound of Formula 1,
from a compound of Formula 2 wherein X, R1, R2, R3, R4, R5, n, R6, R7, G and W are as defined in the disclosure. Also disclosed are compounds of Formulae 2 and 4
wherein X, R1, R2, R3, R4, R5, n, R6, R7, G and W are as defined in the disclosure. Also disclosed is a process for preparing the compounds of Formulae 2 and 4.