1235612-22-2Relevant academic research and scientific papers
Synthesis of Phenylcyclopropane-Based Secondary Amine Catalysts and Their Applications in Enamine Catalysis
Kano, Taichi,Maruoka, Keiji,Takeshima, Aika
supporting information, (2019/10/08)
A novel chiral motif based on a phenylcyclopropane scaffold has been designed, and a facile synthetic route to the key intermediate for the synthesis of phenylcyclopropane-based chiral secondary amines has been developed. Newly synthesized chiral amines function as effective catalysts for several asymmetric reactions through enamine intermediates.
POLYMER SUPPORTED FLUORINATED ORGANOCATALYST
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Page/Page column 26; 27; 28, (2017/02/09)
Polymer supported fluorinated compound of formula I, wherein the meaning for each R1 is as disclosed in the description. These compounds are useful as catalysts, particularly in Michael addition reactions under continuous flow.
Asymmetric Redox-Annulation of Cyclic Amines
Kang, YoungKu,Chen, Weijie,Breugst, Martin,Seidel, Daniel
, p. 9628 - 9640 (2015/10/12)
Cyclic amines such as 1,2,3,4-tetrahydroisoquinoline undergo regiodivergent annulation reactions with 4-nitrobutyraldehydes. These redox-neutral transformations enable the asymmetric synthesis of highly substituted polycyclic ring systems in just two steps from commercial materials. The utility of this process is illustrated in a rapid synthesis of (-)-protoemetinol. Computational studies provide mechanistic insights and implicate the elimination of acetic acid from an ammonium nitronate intermediate as the rate-determining step.
Translating the Enantioselective Michael Reaction to a Continuous Flow Paradigm with an Immobilized, Fluorinated Organocatalyst
Sagamanova, Irina,Rodríguez-Escrich, Carles,Molnár, István Gábor,Sayalero, Sonia,Gilmour, Ryan,Pericàs, Miquel A.
, p. 6241 - 6248 (2015/11/23)
A novel polymer-supported fluorinated organocatalyst has been prepared and benchmarked in the enantioselective Michael addition of aldehydes to nitroalkenes. The system has proven to be highly efficient and displays excellent selectivities (er and dr) wit
Organocatalytic asymmetric Michael addition of aldehydes and ketones to nitroalkenes catalyzed by adamantoyl L-prolinamide
Wang, Yongchao,Li, Dong,Lin, Jun,Wei, Kun
, p. 5863 - 5874 (2015/03/05)
A series of adamantoyl l-prolinamides have been synthesized. These compounds have been found to be highly efficient organocatalysts for the Michael addition of aldehydes and ketones to nitroalkenes. Under the optimized reaction conditions, the correspondi
Polyethylene glycol (PEG) as a reusable solvent medium for an asymmetric organocatalytic Michael addition. Application to the synthesis of bioactive compounds
Feu, Karla S.,De La Torre, Alexander F.,Silva, Sandrina,De Moraes Junior, Marco A.F.,Correa, Arlene G.,Paixao, Marcio W.
supporting information, p. 3169 - 3174 (2014/06/10)
A highly stereoselective organocatalytic Michael addition of aldehydes to trans-β-nitrostyrenes using PEG as a recyclable solvent medium is presented. The scope of this organocatalytic system is demonstrated by the formation of several Michael adducts in good yields and stereoselectivities. Furthermore, applying this new protocol to acetaldehyde, we have disclosed an easy formal synthesis of (R)-pregabalin, (R)-phenibut and (R)-bacoflen with good yields and outstanding enantioselectivities. This journal is the Partner Organisations 2014.
Enantioselective Michael additions of aldehydes to nitroalkenes catalyzed with ionically tagged organocatalyst
Sebesta, Radovan,Latika, Attila
, p. 416 - 425 (2014/01/17)
Enantioselective organocatalytic Michael additions affords useful building blocks for many biologically and medicinally relevant compounds. Ionically-tagged diphenylprolinol silyl ether efficiently catalyzes several Michael additions of aldehydes to nitro
One-pot asymmetric synthesis of γ-nitroaldehydes from aldehydes and nitroalkanes through a catalytic tandem reaction using an amino acid lithium salt
Yoshida, Masanori,Kitamikado, Naoki,Ikehara, Hiroto,Hara, Shoji
, p. 2305 - 2309 (2011/06/11)
One-pot asymmetric synthesis of γ-nitroaldehydes from aldehydes and nitroalkanes was achieved by a catalytic tandem reaction using a primary amino acid lithium salt, O-tert-butyldiphenylsilyl l-tyrosine lithium salt, as a catalyst. Various aryl, alkenyl, and alkyl aldehydes were converted into γ-nitroaldehydes via in situ generation of nitroalkenes.
