Experimental and Computational Studies on the Directing Ability of Chalcogenoethers in Palladium‐Catalyzed Atroposelective C−H Olefination and Allylation
作者:Gang Liao、Tao Zhang、Liang Jin、Bing‐Jie Wang、Cheng‐Kai Xu、Yu Lan、Yu Zhao、Bing‐Feng Shi
DOI:10.1002/anie.202115221
日期:2022.3
of chalcogenoether motifs in Pd-catalyzed atroposelective C−Holefination and allylation are presented. The thioether motif was found to be a superior directing group compared to the corresponding ether (−OR) and selenoether in terms of reactivity and enantiocontrol. The selenoether unit (−SeMe) was used for the first time as a suitable directing group in asymmetric C−H activation.
Synthesis of Diverse Phenothiazines by Direct Thioamination of Arynes with <i>S</i>-(<i>o</i>-Bromoaryl)-<i>S</i>-methylsulfilimines and Subsequent Intramolecular Buchwald–Hartwig Amination
A facile method for the synthesis of diverse phenothiazines has been achieved by direct thioamination of aryne intermediates with S-(o-bromoaryl)-S-methylsulfilimines and subsequent intramolecular ...
通过芳炔中间体与 S-(邻溴芳基)-S-甲基硫亚胺的直接硫胺化和随后的分子内...
Synthesis of Multisubstituted Benzenes from Phenols via Multisubstituted Benzynes
synthesize multifunctionalized arenes from simple phenols through aryne intermediates is described. Multisubstituted aryne precursors were prepared from phenols by Ir-catalyzed C–H borylation, deborylthiolation, O-triflylation, S-oxidation, and further modification through ortho-deprotonation directed by the sulfoxide moiety. Various multisubstituted arenes were synthesized by transformations of highly
介绍了一种从简单酚类到芳烃中间体合成多功能芳烃的新方法。多取代的芳烃前体通过 Ir 催化的 C-H 硼基化、脱硼硫基化、O-三氟甲磺酸化、S-氧化以及通过亚砜部分指导的邻位去质子化进一步改性由苯酚制备。通过转化由邻亚磺酰基芳基三氟甲磺酸酯产生的高度官能化的芳烃中间体,合成了各种多取代芳烃。