Results 41 to 50 of about 5,754 (198)
Memory of Chirality in Radical Addition–Translocation–Cyclization Cascades
Helvetica Chimica Acta, EarlyView.Radical addition–translocation–cyclization cascades of chiral alkynes show striking memory of chirality (MoC), with strong retention of configuration when fast, polarity favored cyclization are involved. The most effective system employs a highly electron‐poor pentafluorobenzenesulfonyl group.
Christian Simon Gloor +3 more
wiley +1 more source
Catalytic stereoselective [2,3]-rearrangement reactions [PDF]
, 2015 The authors thank the Royal Society for a University Research Fellowship (A.D.S.), the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-20013) ERC Grant Agreement No.
Kasten, Kevin +4 more
core +1 more source
Metal‐Free Electrophilic Borylative Cyclizations of Alkynes
The Chemical Record, EarlyView.Metal‐free borylative cyclizations based on electrophilic alkyne activation by boron Lewis acids provide efficient access to borylated hetero‐ and carbocycles. Early studies using B(C6F5)3 displayed limited scope and application, whereas recent ClBcat‐ and BCl3‐based methods enable mild CB and CC/CX bond formation for the synthesis of cycles ...
Jaime Mateos‐Gil +3 more
wiley +1 more source
Liquid Space Lubricants Examined by Vibrational Micro-Spectroscopy [PDF]
, 2008 Considerable effort has been expended to develop liquid lubricants for satellites and space exploration vehicles. These lubricants must often perform under a range of harsh conditions such as vacuum, radiation, and temperature extremes while in orbit or ...
Street, Kenneth W., Jr.
core +2 more sources
Enantioselective isothiourea catalysed Michael-Michael-lactonisation cascade; synthesis of δ-lactones and 1,2,3,4-substituted cyclopentanes [PDF]
, 2017 The authors thank the EPSRC (ERTR – grant code EP/J500549/1; ABF - grant code EP/J018139/1), the Spanish government for a FPU Fellowship and the University of Seville (V Plan Propio de Investigación) for financial support (PER).
Elías-Rodríguez, Pilar +3 more
core +1 more source
RSC Adv., 2014 Atomic oxygen erosion mechanisms of 1,3-didecyl cyclopentane, 1,3-dioctyldodecyl cyclopentane and alkylated cyclopentane.
Jingyan Nian +4 more
openaire +1 more source
Plant Biotechnology Journal, EarlyView.ABSTRACT Iridoids constitute a prominent class of plant‐specialised metabolites, with carbocyclic iridoids (e.g., geniposide) and secoiridoids (e.g., loganin) diverging early in their biosynthetic pathways. This divergence is marked by substrate‐specific carboxyl methyltransferases—GjGAMT and CrLAMT—that catalyse the decisive methylation step in ...
Li Li +7 more
wiley +1 more source
STEREOCHEMISTRY OF HEXENYL RADICAL CYCLIZATIONS WITH TERT-BUTYL AND RELATED LARGE GROUPS: SUBSTITUENT AND TEMPERATURE EFFECTS [PDF]
, 2006 The long held notion that hexenyl radicals bearing large substituents on the radical carbon cyclize to give 1,2-trans-substituted cyclopentanes is experimentally disproved by study of the radical cyclization of an assortment of simple and complex ...
Tripp, Jonathan Clive
core
Enantioselective stereodivergent nucleophile-dependent isothiourea-catalysed domino reactions [PDF]
, 2016 We thank the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007–2013) ERC grant agreement no. 279850 (J.E.T.) and the EPSRC (EP/J018139/1, A.M.).
Abbasov +27 more
core +2 more sources
Plant Biotechnology Journal, EarlyView.ABSTRACT Biotic stresses, particularly Verticillium wilt (VW), lead to a global decline in cotton yields. Here, we demonstrate that ectopic expression of ScALDH21, a gene from the desiccation‐tolerant moss Syntrichia caninervis Mitt. and absent in angiosperms, enhances cotton's resistance to VW.
Honglan Yang +13 more
wiley +1 more source