The first example of Ir(III)-catalyzed C-H activation/cyclization with N-alkoxyamides as amidation reagents to simultaneously form functionalized thiadiazine 1-oxide derivatives was developed. This one-pot cascade protocol tolerated diverse functional groups and readily constructed various heterocyclic frameworks in moderate to good yield.
Electrochemical N(sp<sup>2</sup>)–H/C(sp<sup>3</sup>)–H cross-coupling reaction between sulfoximines and alkylarenes
作者:Qing-Ru Zhu、Peng-Zhan Zhang、Xiang Sun、Hui Gao、Pei-Long Wang、Hongji Li
DOI:10.1039/d4gc00191e
日期:——
electrochemical oxidation-induced amination of simple alkylarenes with sulfoximines as a nitrogen source and 5,6-dimethyl-1H-benzo[d]imidazole as a catalyst undermildconditions was developed. This protocol represents a rare example of benzylic C–H functionalization of alkylarenes that involves the electrochemical generation of N-center radical, providing access to a range of corresponding aminated
Sulphoximide derivatives of the general formula: ##STR1## wherein R.sub.1 is a phenyl, thienyl, furyl or pyridyl ring; R.sub.2 is a thienyl, furyl, or pyridyl ring; R.sub.3 and R.sub.4 are the same or are different and are alkyl groups containing up to 6 carbon atoms or together with the nitrogen atom to which they are attached form a pyrrolidine, piperidine, or morpholine ring; and n is a whole number from 1 to 5; and the pharmaceutically acceptable organic and inorganic acid addition and quaternary ammoniuim salts thereof. The compounds of the invention exhibit anti-bronchospasmolytic activity.
General Method for the Asymmetric Synthesis of N–H Sulfoximines via C–S Bond Formation
作者:Priscilla Mendonça Matos、William Lewis、Stephen P. Argent、Jonathan C. Moore、Robert A. Stockman
DOI:10.1021/acs.orglett.0c00761
日期:2020.4.3
A versatile method for the synthesis of enantioenriched N–H sulfoximines is reported. The approach stems from the organomagnesium-mediated ring opening of novel cyclic sulfonimidate templates. The reactions proceed in high yield and with excellent stereofidelity with alkyl, aryl, and heteroaryl Grignard reagents. The chiral auxiliary is readily removed from the resultant sulfoximines via an unusual