Spiro Derivatives of Tetrahydrothiophene. Synthesis of the Quinolizidine <3-spiro-2′> tetrahydrothiophene System Using Solid/Liquid or Liquid/Liquid Phase-Transfer Catalysis
Spiro Derivatives of Tetrahydrothiophene. Synthesis of the Quinolizidine <3-spiro-2′> tetrahydrothiophene System Using Solid/Liquid or Liquid/Liquid Phase-Transfer Catalysis
reaction mechanism of photo‐induced DNA cleavage in nature, a C(sp3)−H cyanation reaction promoted by visible‐light photoredox/phosphate hybrid catalysis was developed. Phosphate radicals, generated by one‐electron photooxidation of phosphate salt, functioned as a hydrogen‐atom‐transfer catalyst to produce nucleophilic carbon radicals from C(sp3)−H bonds with a high bond‐dissociation energy. The resulting
Carbanions of five-membered S-heterocycles react with nitroarenes via the ring-opening VNS reaction or oxidativenucleophilicsubstitution of hydrogen. The reaction course is affected by rigidity of the ring.
Flavin-Mediated Photocatalysis Provides a General Platform for Sulfide C–H Functionalization
作者:Alex S. Anderton、Oliver J. Knowles、James A. Rossi-Ashton、David J. Procter
DOI:10.1021/acscatal.3c05785
日期:2024.2.16
Functionalized sulfides are important in many areas of science, ranging from chemical biology through drug discovery to organic materials chemistry. Sulfides bearing pendant reactive groups in the α-position are particularly useful; however, methods for the selective valorization of simple sulfides or the late-stage functionalization of complex sulfides by the convenient addition of valuable functionality
Direct C(sp<sup>3</sup>)–H Cyanation Enabled by a Highly Active Decatungstate Photocatalyst
作者:Kunsoon Kim、Seulchan Lee、Soon Hyeok Hong
DOI:10.1021/acs.orglett.1c01846
日期:2021.7.16
Heteroalicyclic carboxamidines as inhibitors of inducible nitric oxide synthase; the identification of (2R)-2-pyrrolidinecarboxamidine as a potent and selective haem-co-ordinating inhibitor
作者:Robert J. Young、Wendy Alderton、Anthony D.R. Angell、Paul J. Beswick、David Brown、C. Lynn Chambers、Miriam C. Crowe、John Dawson、Christopher C.F. Hamlett、Simon T. Hodgson、Savvas Kleanthous、Richard G. Knowles、Linda J. Russell、Richard Stocker、James M. Woolven
DOI:10.1016/j.bmcl.2011.03.038
日期:2011.5
Heteroalicyclic carboxamidines were synthesised and evaluated as inhibitors of nitric oxide synthases. (2R)-2-Pyrrolidinecarboxamidine, in particular, was shown to be a highly potent in vitro (IC(50) = 0.12 mu M) and selective iNOS inhibitor (> 100-fold vs both eNOS and nNOS), with probable binding to the key anchoring glutamate residue and co-ordination to the haem iron. (C) 2011 Elsevier Ltd. All rights reserved.