Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Manuel Jörres"'
Publikováno v:
ChemCatChem. 7:1265-1269
Solventless asymmetric alkylation of a nickel complex in a ball mill led to α-amino acid precursors with essentially complete stereochemical control; this outcome is generally superior to that obtained for analogous reactions performed in solution.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae40832053fa3438c4f1fd9e1aa701bd
https://doi.org/10.1002/cctc.201500102
https://doi.org/10.1002/cctc.201500102
Autor:
Vadim A. Soloshonok, Hong Liu, Carina Merkens, José Luis Aceña, Manuel Jörres, Carsten Bolm, Xia Chen
Publikováno v:
Advanced Synthesis & Catalysis. 356:2203-2208
A new multipurpose glycine equivalent for the general asymmetric synthesis of a-amino acids is introduced. The chiral reagent can be trans- formed to various amino acids by alkylations with alkyl halides as well as aldol and Michael addition reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff1aea606a2f8f1fdefdc6c55c30f9bd
https://doi.org/10.1002/adsc.201400405
https://doi.org/10.1002/adsc.201400405
Publikováno v:
Organic Letters. 14:4518-4521
A series of new thiourea catalysts prepared from natural amino acids have been applied in organocatalytic asymmetric Michael additions of α-nitrocyclohexanone to nitroalkenes. The resulting addition products are formed with excellent enantioselectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5eaf233ea5fec18097317beaf5206f1
https://doi.org/10.1021/ol302005f
https://doi.org/10.1021/ol302005f
Publikováno v:
Journal of the American Chemical Society. 134(16)
An unprecedented strategy to access highly enantioenriched dihydropyrazoles is described. It involves formal [4+1] cycloadditions of in situ-derived azoalkenes and sulfur ylides catalyzed by a chiral copper/Tol-BINAP complex. A variety of synthetical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f911e7c1c4f47f733cc6ff1a56fa1c0d
https://pubmed.ncbi.nlm.nih.gov/22497267
https://pubmed.ncbi.nlm.nih.gov/22497267
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 16(42)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4f37bc346003bbe27dda937947c3899
https://pubmed.ncbi.nlm.nih.gov/20878809
https://pubmed.ncbi.nlm.nih.gov/20878809
Publikováno v:
Green Chemistry. 15:612
An efficient, solvent-free protocol for asymmetric Michael additions of α-nitrocyclohexanone to nitroalkenes using thiourea derivatives as hydrogen bonding catalysts has been developed. By performing the organocatalytic reactions in a planetary ball
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0097c4464601f29aeb8fc4a35d186801
https://doi.org/10.1039/c2gc36906k
https://doi.org/10.1039/c2gc36906k