Results 81 to 90 of about 9,389 (255)
Ring-Closing Metathesis of N-Alkenyl-Cyanamides
, 2021 An entry to new classes of nitrogen-containing heterocycles featuring both a cyanamide and an unsaturated 5-, 6- or 7- membered ring is reported. They can be readily obtained by ring-closing metathesis of the corresponding N-alkenyl-cyanamides – new ...
Diacofotaki, Christina +2 more
core +1 more source
A short stereoselective synthesis of (+)-(6R,2′S)-cryptocaryalactone via ring-closing metathesis
Beilstein Journal of Organic Chemistry, 2009 A short stereoselective synthesis of (+)-(6R,2′S)-cryptocaryalactone was successfully completed. Key steps included the application of Carreira’s asymmetric alkynylation reaction to form a propargylic alcohol and subsequently lactone formation using the ...
Palakodety Radha Krishna +2 more
doaj +1 more source
Enamide−Olefin Ring-Closing Metathesis
, 2016 The first examples of ring-closing metathesis reactions of olefin-containing enamides using ruthenium-based catalysts have been demonstrated. A preliminary investigation into the scope and limitations, leading to protected five- and six-membered cyclic ...
Jan H. van Maarseveen (1489900) +4 more
core +1 more source
Heptane-Soluble Ring-Closing Metathesis Catalysts
, 2016 Terminally vinyl-functionalized polyisobutylene (PIB) oligomers can be easily transformed into end-functionalized PIB-bound Ru metathesis catalysts. The nonpolar catalysts so prepared can be used as solutions in heptane and recycled by a gravity-based ...
David E. Bergbreiter (1544338) +3 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2015 We have developed a simple methodology to transform cis-syn-cis-triquinane derivative 2 into the diindole based macrocycle 6 involving Fischer indolization and ring-closing metathesis (RCM).
Sambasivarao Kotha +2 more
doaj +1 more source
Molybdenum-Catalyzed Ring-Closing Metathesis of Allenynes
, 2016 A ring-closing metathesis reaction of allenynes occurred at room temperature in the presence of a molybdenum alkylidene complex to give ring-closed vinylallenes.
Masahiro Murakami (8477) +2 more
core +1 more source
, 2003 A large scale, 10 step synthesis of cyclopentanone 1 , starting from the chiral pool compound D-mannose, is described. The synthesis proceeds via a ring closing metathesis reaction as the key step in an overall yield of 23%.
Leumann, Christian, Vonlanthen, David
core +1 more source
Beilstein Journal of Organic Chemistry, 2015 Iodide-containing nitro-Grela-type catalysts have been synthesized and applied to ring closing metathesis (RCM) and cross metathesis (CM) reactions. These new catalysts have exhibited improved efficiency in the transformation of sterically, non-demanding
Andrzej Tracz +3 more
doaj +1 more source
Synthesis of 1,2-Dihydroquinolines via Hydrazine-Catalysed Ring-Closing Carbonyl-Olefin Metathesis
, 2019 The synthesis of 1,2-dihydroquinolines by the hydrazine-catalysed ring-closing carbonyl-olefin metathesis (RCCOM) of N-prenylated 2-aminobenzaldehydes is reported.
Tristan, Lambert +3 more
core +1 more source
A Concise and Stereoselective Total Synthesis of Paecilomycin E
Natural Product Communications, 2019 A concise approach for the first total synthesis of paecilomycin E is described involving Alder-Rickert reaction, Mitsunobu esterification and ring closing metathesis as the key steps.
A. Srinivas Reddy +4 more
doaj +1 more source