Radical Heteroarylalkylation of Alkenes via
<scp>Three‐Component Docking‐Migration</scp>
Thioetherification Cascade
作者:Tao Niu、Jige Liu、Xinxin Wu、Chen Zhu
DOI:10.1002/cjoc.202000088
日期:2020.8
A novel, rational‐designed approach to access various heteroaryl‐substituted alkyl thioethers was developed via docking‐migration cascade process. By utilizing three components involving alkene, dual‐function reagent, and thioetherificating reagent, radical heteroarylalkylation of alkenes followed by thiolation of the alkyl radical intermediates proceeded smoothly, manifesting well compatibility of
Catalytic Enantioselective Alkylation of Sulfenate Anions to Chiral Heterocyclic Sulfoxides Using Halogenated Pentanidium Salts
作者:Lili Zong、Xu Ban、Choon Wee Kee、Choon-Hong Tan
DOI:10.1002/anie.201407512
日期:2014.10.27
We report halogenated pentanidiums as phase‐transfer catalysts for the asymmetric alkylation of sulfenate anions to various sulfoxides with high enantioselectivities (up to 99 % ee) and yields (up to 99 %). This approach gives access to enantioenriched heterocyclic sulfoxides that might not be compatible with strong oxidants or organometallic reagents. Computational studies have revealed that the multiple
Preparation and synthetic utility of 3-(benzotriazol-1-ylmethyl)areno- and -hetareno[b]thiophenes
作者:Alan R. Katritzky、Vladimir Y. Vvedensky、Dmytro O. Tymoshenko
DOI:10.1039/b008612f
日期:——
3-(Functionalized-methyl)- and 3-alkenylareno(hetareno)[b]thiophenes 13–16 are prepared via the side chain elaboration of 3-(benzotriazol-1-ylmethyl)thiophenes 10d–f,h, readily available from the condensation of 1-benzotriazolyl-3-chloroacetone 7 with aromatic or heteroaromatic thiols followed by dehydrative cyclization of 1-(benzotriazol-1-yl)-3-[aryl(hetaryl)thio]acetones 9d–f,h.
Overcoming Radical Stability Order via DABCO-Triggered Desulfurization: Visible-Light-Promoted 1,2,4-Trifunctionalization of Butenyl Benzothiazole Sulfone with Thiosulfonate
作者:Xin-Yu Liu、Jia-Lin Fang、Weidong Rao、Daopeng Shen、Zhao-Ying Yang、Shun-Yi Wang
DOI:10.1021/acs.joc.3c02234
日期:2024.1.5
A radical 1,2,4-trifunctional reaction of thiosulfonate to unactivated olefin is achieved by a migration strategy under mild conditions. In this reaction, the more unstable primary free radicals are in situ generated after the migration of heteroaryl groups in the presence of DABCO. This trifunctionalization of unactivated olefins involves two C–S bond formations and one C–C bond formation.
An ink-jet recording device includes: an ink-jet head that ejects an ink toward a recording medium, the ink curable by irradiating with an actinic energy ray to form an image on the recording medium, and a mist adsorbing portion (61) that is disposed in the vicinity of the ink-jet head and that electrostatically adsorbs an ink mist produced by ejecting the ink from the ink-jet head.